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* lisp/x-dnd.el (x-dnd-handle-xdnd): Prevent nil from appearing in format 32 list. (x-dnd-handle-motif): Send reply if the user quit out of the drop handler as well.
1115 lines
45 KiB
EmacsLisp
1115 lines
45 KiB
EmacsLisp
;;; x-dnd.el --- drag and drop support for X -*- lexical-binding: t; -*-
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;; Copyright (C) 2004-2022 Free Software Foundation, Inc.
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;; Author: Jan Djärv <jan.h.d@swipnet.se>
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;; Maintainer: emacs-devel@gnu.org
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;; Keywords: window, drag, drop
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;; Package: emacs
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; This file provides the receiving side of the XDND and Motif
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;; protocols, and both the receiving and initiating ends of the old
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;; KDE (OffiX) and new OffiX protocols.
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;;; Code:
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(require 'dnd)
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;;; Customizable variables
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(defcustom x-dnd-test-function #'x-dnd-default-test-function
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"The function drag and drop uses to determine if to accept or reject a drop.
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The function takes three arguments, WINDOW, ACTION and TYPES.
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WINDOW is where the mouse is when the function is called. WINDOW
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may be a frame if the mouse isn't over a real window (i.e. menu
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bar, tool bar or scroll bar). ACTION is the suggested action
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from the drag and drop source, one of the symbols move, copy,
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link or ask. TYPES is a vector of available types for the drop.
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Each element of TYPE should either be a string (containing the
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name of the type's X atom), or a symbol, whose name will be used.
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The function shall return nil to reject the drop or a cons with
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two values, the wanted action as car and the wanted type as cdr.
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The wanted action can be copy, move, link, ask or private.
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The default value for this variable is `x-dnd-default-test-function'."
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:version "22.1"
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:type 'symbol
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:group 'x)
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(defcustom x-dnd-types-alist
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`((,(purecopy "text/uri-list") . x-dnd-handle-uri-list)
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(,(purecopy "text/x-moz-url") . x-dnd-handle-moz-url)
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(,(purecopy "_NETSCAPE_URL") . x-dnd-handle-uri-list)
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(,(purecopy "FILE_NAME") . x-dnd-handle-file-name)
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(,(purecopy "UTF8_STRING") . x-dnd-insert-utf8-text)
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(,(purecopy "text/plain;charset=UTF-8") . x-dnd-insert-utf8-text)
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(,(purecopy "text/plain;charset=utf-8") . x-dnd-insert-utf8-text)
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(,(purecopy "text/unicode") . x-dnd-insert-utf16-text)
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(,(purecopy "text/plain") . dnd-insert-text)
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(,(purecopy "COMPOUND_TEXT") . x-dnd-insert-ctext)
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(,(purecopy "STRING") . dnd-insert-text)
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(,(purecopy "TEXT") . dnd-insert-text)
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(,(purecopy "DndTypeFile") . x-dnd-handle-offix-file)
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(,(purecopy "DndTypeFiles") . x-dnd-handle-offix-files)
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(,(purecopy "DndTypeText") . dnd-insert-text))
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"Which function to call to handle a drop of that type.
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If the type for the drop is not present, or the function is nil,
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the drop is rejected. The function takes three arguments, WINDOW, ACTION
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and DATA. WINDOW is where the drop occurred, ACTION is the action for
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this drop (copy, move, link, private or ask) as determined by a previous
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call to `x-dnd-test-function'. DATA is the drop data.
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The function shall return the action used (copy, move, link or private)
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if drop is successful, nil if not."
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:version "22.1"
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:type 'alist
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:group 'x)
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(defcustom x-dnd-known-types
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(mapcar 'purecopy
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'("text/uri-list"
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"text/x-moz-url"
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"_NETSCAPE_URL"
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"FILE_NAME"
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"UTF8_STRING"
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"text/plain;charset=UTF-8"
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"text/plain;charset=utf-8"
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"text/unicode"
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"text/plain"
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"COMPOUND_TEXT"
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"STRING"
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"TEXT"
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"DndTypeFile"
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"DndTypeText"))
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"The types accepted by default for dropped data.
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The types are chosen in the order they appear in the list."
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:version "22.1"
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:type '(repeat string)
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:group 'x)
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(defcustom x-dnd-use-offix-drop 'files
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"If non-nil, use the OffiX protocol to drop files and text.
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This allows dropping (via `dired-mouse-drag-files' or
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`mouse-drag-and-drop-region-cross-program') on some old Java
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applets and old KDE programs. Turning this off allows dropping
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only text on some other programs such as xterm and urxvt.
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If the symbol `files', use the OffiX protocol when dropping
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files, and the fallback drop method (which is used with programs
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like xterm) for text."
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:version "29.1"
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:type '(choice (const :tag "Don't use the OffiX protocol for drag-and-drop" nil)
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(const :tag "Only use the OffiX protocol to drop files" files)
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(const :tag "Use the OffiX protocol for both files and text" t))
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:group 'x)
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;; Internal variables
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(defvar x-dnd-current-state nil
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"The current state for a drop.
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This is an alist with one entry for each display. The value for each display
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is a vector that contains the state for drag and drop for that display.
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Elements in the vector are:
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Last buffer drag was in,
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last window drag was in,
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types available for drop,
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the action suggested by the source,
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the type we want for the drop,
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the action we want for the drop,
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any protocol specific data.")
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(declare-function x-get-selection-internal "xselect.c"
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(selection-symbol target-type &optional time-stamp terminal))
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(declare-function x-display-set-last-user-time "xfns.c")
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(defconst x-dnd-xdnd-to-action
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'(("XdndActionPrivate" . private)
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("XdndActionCopy" . copy)
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("XdndActionMove" . move)
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("XdndActionLink" . link)
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("XdndActionAsk" . ask))
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"Mapping from XDND action types to Lisp symbols.")
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(defvar x-dnd-empty-state [nil nil nil nil nil nil nil])
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(declare-function x-register-dnd-atom "xselect.c")
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(defun x-dnd-init-frame (&optional frame)
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"Setup drag and drop for FRAME (i.e. create appropriate properties)."
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(when (eq 'x (window-system frame))
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(x-register-dnd-atom "DndProtocol" frame)
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(x-register-dnd-atom "_MOTIF_DRAG_AND_DROP_MESSAGE" frame)
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(x-register-dnd-atom "XdndEnter" frame)
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(x-register-dnd-atom "XdndPosition" frame)
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(x-register-dnd-atom "XdndLeave" frame)
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(x-register-dnd-atom "XdndDrop" frame)
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(x-register-dnd-atom "_DND_PROTOCOL" frame)
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(x-dnd-init-xdnd-for-frame frame)
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(x-dnd-init-motif-for-frame frame)))
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(defun x-dnd-get-state-cons-for-frame (frame-or-window)
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"Return the entry in `x-dnd-current-state' for a frame or window."
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(let* ((frame (if (framep frame-or-window) frame-or-window
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(window-frame frame-or-window)))
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(display (frame-parameter frame 'display)))
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(if (not (assoc display x-dnd-current-state))
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(push (cons display (copy-sequence x-dnd-empty-state))
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x-dnd-current-state))
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(assoc display x-dnd-current-state)))
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(defun x-dnd-get-state-for-frame (frame-or-window)
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"Return the state in `x-dnd-current-state' for a frame or window."
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(cdr (x-dnd-get-state-cons-for-frame frame-or-window)))
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(defun x-dnd-default-test-function (_window _action types)
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"The default test function for drag and drop.
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WINDOW is where the mouse is when this function is called. It may be
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a frame if the mouse is over the menu bar, scroll bar or tool bar.
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ACTION is the suggested action from the source, and TYPES are the
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types the drop data can have. This function only accepts drops with
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types in `x-dnd-known-types'. It always returns the action private."
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(let ((type (x-dnd-choose-type types)))
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(when type (cons 'private type))))
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(defun x-dnd-current-type (frame-or-window)
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"Return the type we want the DND data to be in for the current drop.
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FRAME-OR-WINDOW is the frame or window that the mouse is over."
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(aref (x-dnd-get-state-for-frame frame-or-window) 4))
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(defun x-dnd-forget-drop (frame-or-window)
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"Remove all state for the last drop.
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FRAME-OR-WINDOW is the frame or window that the mouse is over."
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(setcdr (x-dnd-get-state-cons-for-frame frame-or-window)
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(copy-sequence x-dnd-empty-state)))
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(defun x-dnd-maybe-call-test-function (window action)
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"Call `x-dnd-test-function' if something has changed.
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WINDOW is the window the mouse is over. ACTION is the suggested
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action from the source. If nothing has changed, return the last
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action and type we got from `x-dnd-test-function'."
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(let ((buffer (when (window-live-p window)
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(window-buffer window)))
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(current-state (x-dnd-get-state-for-frame window)))
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(unless (and (equal buffer (aref current-state 0))
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(equal window (aref current-state 1))
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(equal action (aref current-state 3)))
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(save-current-buffer
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(when buffer (set-buffer buffer))
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(let* ((action-type (funcall x-dnd-test-function
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window
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action
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(aref current-state 2)))
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(handler (cdr (assoc (cdr action-type) x-dnd-types-alist))))
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;; Ignore action-type if we have no handler.
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(setq current-state
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(x-dnd-save-state window
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action
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(when handler action-type)))))))
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(let ((current-state (x-dnd-get-state-for-frame window)))
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(cons (aref current-state 5)
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(aref current-state 4))))
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(defun x-dnd-save-state (window action action-type &optional types extra-data)
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"Save the state of the current drag and drop.
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WINDOW is the window the mouse is over. ACTION is the action suggested
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by the source. ACTION-TYPE is the result of calling `x-dnd-test-function'.
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If given, TYPES are the types for the drop data that the source supports.
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EXTRA-DATA is data needed for a specific protocol."
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(let ((current-state (x-dnd-get-state-for-frame window)))
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(aset current-state 5 (car action-type))
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(aset current-state 4 (cdr action-type))
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(aset current-state 3 action)
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(when types (aset current-state 2 types))
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(when extra-data (aset current-state 6 extra-data))
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(aset current-state 1 window)
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(aset current-state 0 (and (window-live-p window) (window-buffer window)))
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(setcdr (x-dnd-get-state-cons-for-frame window) current-state)))
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(defun x-dnd-handle-moz-url (window action data)
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"Handle one item of type text/x-moz-url.
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WINDOW is the window where the drop happened. ACTION is ignored.
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DATA is the moz-url, which is formatted as two strings separated by \\r\\n.
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The first string is the URL, the second string is the title of that URL.
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DATA is encoded in utf-16. Decode the URL and call `x-dnd-handle-uri-list'."
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;; Mozilla and applications based on it use text/unicode, but it is
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;; impossible to tell if it is le or be. Use what the machine Emacs
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;; runs on uses. This loses if dropping between machines
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;; with different endian-ness, but it is the best we can do.
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(let* ((coding (if (eq (byteorder) ?B) 'utf-16be 'utf-16le))
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(string (decode-coding-string data coding))
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(strings (split-string string "[\r\n]" t))
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;; Can one drop more than one moz-url ?? Assume not.
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(url (car strings)))
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(x-dnd-handle-uri-list window action url)))
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(defun x-dnd-insert-utf8-text (window action text)
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"Decode the UTF-8 text and insert it at point.
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TEXT is the text as a string, WINDOW is the window where the drop happened."
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(dnd-insert-text window action (decode-coding-string text 'utf-8)))
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(defun x-dnd-insert-utf16-text (window action text)
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"Decode the UTF-16 text and insert it at point.
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TEXT is the text as a string, WINDOW is the window where the drop happened."
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;; See comment in x-dnd-handle-moz-url about coding.
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(let ((coding (if (eq (byteorder) ?B) 'utf-16be 'utf-16le)))
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(dnd-insert-text window action (decode-coding-string text coding))))
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(defun x-dnd-insert-ctext (window action text)
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"Decode the compound text and insert it at point.
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TEXT is the text as a string, WINDOW is the window where the drop happened."
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(dnd-insert-text window action
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(decode-coding-string text
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'compound-text-with-extensions)))
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(defun x-dnd-handle-uri-list (window action string)
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"Split an uri-list into separate URIs and call `dnd-handle-one-url'.
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WINDOW is the window where the drop happened.
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STRING is the uri-list as a string. The URIs are separated by \\r\\n."
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(let ((uri-list (split-string string "[\0\r\n]" t))
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retval)
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(dolist (bf uri-list)
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;; If one URL is handled, treat as if the whole drop succeeded.
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(let ((did-action (dnd-handle-one-url window action bf)))
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(when did-action (setq retval did-action))))
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retval))
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(defun x-dnd-handle-file-name (window action string)
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"Convert file names to URLs and call `dnd-handle-one-url'.
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WINDOW is the window where the drop happened.
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STRING is the file names as a string, separated by nulls."
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(let ((uri-list (split-string string "[\0\r\n]" t))
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(coding (or file-name-coding-system
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default-file-name-coding-system))
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retval)
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(dolist (bf uri-list)
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;; If one URL is handled, treat as if the whole drop succeeded.
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(if coding (setq bf (encode-coding-string bf coding)))
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(let* ((file-uri (concat "file://"
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(mapconcat 'url-hexify-string
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(split-string bf "/") "/")))
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(did-action (dnd-handle-one-url window action file-uri)))
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(when did-action (setq retval did-action))))
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retval))
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(defun x-dnd-choose-type (types &optional known-types)
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"Choose which type we want to receive for the drop.
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TYPES are the types the source of the drop offers, a vector of type names
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as strings or symbols. Select among the types in `x-dnd-known-types' or
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KNOWN-TYPES if given, and return that type name.
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If no suitable type is found, return nil."
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(let* ((known-list (or known-types x-dnd-known-types))
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(first-known-type (car known-list))
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(types-array types)
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(found (when first-known-type
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(catch 'done
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(dotimes (i (length types-array))
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(let* ((type (aref types-array i))
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(typename (if (symbolp type)
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(symbol-name type) type)))
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(when (equal first-known-type typename)
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(throw 'done first-known-type))))
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nil))))
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(if (and (not found) (cdr known-list))
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(x-dnd-choose-type types (cdr known-list))
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found)))
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(defun x-dnd-drop-data (event frame window data type)
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"Drop one data item onto a frame.
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EVENT is the client message for the drop, FRAME is the frame the drop
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occurred on. WINDOW is the window of FRAME where the drop happened.
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DATA is the data received from the source, and type is the type for DATA,
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see `x-dnd-types-alist').
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Returns the action used (move, copy, link, private) if drop was successful,
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nil if not."
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(let* ((type-info (assoc type x-dnd-types-alist))
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(handler (cdr type-info))
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(state (x-dnd-get-state-for-frame frame))
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(action (aref state 5))
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(w (posn-window (event-start event))))
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(when handler
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(if (and (window-live-p w)
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(not (window-minibuffer-p w))
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(not (window-dedicated-p w)))
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;; If dropping in an ordinary window which we could use,
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;; let dnd-open-file-other-window specify what to do.
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(progn
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(when (and (not mouse-yank-at-point)
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;; If dropping on top of the mode line, insert
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;; the text at point instead.
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(posn-point (event-start event)))
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(goto-char (posn-point (event-start event))))
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(funcall handler window action data))
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;; If we can't display the file here,
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;; make a new window for it.
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(let ((dnd-open-file-other-window t))
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(select-frame frame)
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(funcall handler window action data))))))
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(defun x-dnd-handle-drag-n-drop-event (event)
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"Receive drag and drop events (X client messages).
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Currently XDND, Motif and old KDE 1.x protocols are recognized."
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(interactive "e")
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(let* ((client-message (car (cdr (cdr event))))
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(window (posn-window (event-start event))))
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(if (eq (and (consp client-message)
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(car client-message))
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'XdndSelection)
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;; This is an internal Emacs message caused by something being
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;; dropped on top of a frame.
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(progn
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(let ((action (cdr (assoc (symbol-name (cadr client-message))
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x-dnd-xdnd-to-action)))
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(targets (cddr client-message)))
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(x-dnd-save-state window nil nil
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(apply #'vector targets))
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(x-dnd-maybe-call-test-function window action)
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(unwind-protect
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(x-dnd-drop-data event (if (framep window) window
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(window-frame window))
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window
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(x-get-selection-internal
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'XdndSelection
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(intern (x-dnd-current-type window)))
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(x-dnd-current-type window))
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(x-dnd-forget-drop window))))
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(let ((message-atom (aref client-message 0))
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(frame (aref client-message 1))
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(format (aref client-message 2))
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(data (aref client-message 3)))
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(cond ((equal "DndProtocol" message-atom) ; Old KDE 1.x.
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(x-dnd-handle-old-kde event frame window message-atom format data))
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((equal "_DND_PROTOCOL" message-atom) ; OffiX protocol.
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(x-dnd-handle-offix event frame window message-atom format data))
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((equal "_MOTIF_DRAG_AND_DROP_MESSAGE" message-atom) ; Motif
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(x-dnd-handle-motif event frame window message-atom format data))
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((and (> (length message-atom) 4) ; XDND protocol.
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(equal "Xdnd" (substring message-atom 0 4)))
|
||
(x-dnd-handle-xdnd event frame window message-atom format data)))))))
|
||
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;;; Old KDE protocol.
|
||
|
||
(declare-function x-window-property "xfns.c"
|
||
(prop &optional frame type source delete-p vector-ret-p))
|
||
|
||
(defvar x-dnd-offix-old-kde-to-name '((-1 . DndTypeInvalid)
|
||
(0 . DndTypeUnknown)
|
||
(1 . DndTypeRawData)
|
||
(2 . DndTypeFile)
|
||
(3 . DndTypeFiles)
|
||
(4 . DndTypeText)
|
||
(5 . DndTypeDir)
|
||
(6 . DndTypeLink)
|
||
(7 . DndTypeExe)
|
||
(8 . DndTypeUrl))
|
||
"Alist of old KDE data types to their names.")
|
||
|
||
(defun x-dnd-handle-old-kde (event frame window _message _format data)
|
||
"Handle an old KDE (OffiX) drop.
|
||
EVENT, FRAME, WINDOW and DATA mean the same thing they do in
|
||
`x-dnd-handle-offix.'"
|
||
(let ((proto (aref data 4)))
|
||
;; If PROTO > 0, this is an old KDE drop emulated by a program
|
||
;; supporting a newer version of the OffiX protocol, so we should
|
||
;; wait for the corresponding modern event instead.
|
||
(when (zerop proto)
|
||
(let ((type (cdr (assq (aref data 0) x-dnd-offix-old-kde-to-name)))
|
||
(data (x-window-property "DndSelection" frame nil 0 t)))
|
||
;; First save state.
|
||
(x-dnd-save-state window nil nil (vector type) nil)
|
||
;; Now call the test function to decide what action to perform.
|
||
(x-dnd-maybe-call-test-function window 'private)
|
||
(unwind-protect
|
||
(x-dnd-drop-data event frame window data
|
||
(symbol-name type))
|
||
(x-dnd-forget-drop window))))))
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;;; New OffiX protocol.
|
||
|
||
(defvar x-dnd-offix-id-to-name '((-1 . DndTypeInvalid)
|
||
(0 . DndTypeUnknown)
|
||
(1 . DndTypeRawData)
|
||
(2 . DndTypeFile)
|
||
(3 . DndTypeFiles)
|
||
(4 . DndTypeText)
|
||
(5 . DndTypeDir)
|
||
(6 . DndTypeLink)
|
||
(7 . DndTypeExe)
|
||
(8 . DndTypeUrl)
|
||
(9 . DndTypeMime)
|
||
(10 . DndTypePixmap))
|
||
"Alist of OffiX data types to their names.")
|
||
|
||
(defun x-dnd-handle-offix-file (window action string)
|
||
"Convert OffiX file name to a regular file name.
|
||
Then, call `x-dnd-handle-file-name'.
|
||
|
||
WINDOW and ACTION mean the same as in `x-dnd-handle-file-name'.
|
||
STRING is the raw OffiX file name data."
|
||
(x-dnd-handle-file-name window action
|
||
(replace-regexp-in-string "\0$" "" string)))
|
||
|
||
(defun x-dnd-handle-offix-files (window action string)
|
||
"Convert OffiX file name list to a URI list.
|
||
Then, call `x-dnd-handle-file-name'.
|
||
|
||
WINDOW and ACTION mean the same as in `x-dnd-handle-file-name'.
|
||
STRING is the raw OffiX file name data."
|
||
(x-dnd-handle-file-name window action
|
||
;; OffiX file name lists contain one extra
|
||
;; NULL byte at the end.
|
||
(if (string-suffix-p "\0\0" string)
|
||
(substring string 0 (1- (length string)))
|
||
string)))
|
||
|
||
(defun x-dnd-handle-offix (event frame window _message-atom _format data)
|
||
"Handle OffiX drop event EVENT.
|
||
FRAME is the frame where the drop happened.
|
||
WINDOW is the window where the drop happened.
|
||
_MESSAGE-ATOM and _FORMAT are unused.
|
||
DATA is the vector containing the contents of the client
|
||
message (format 32) that caused EVENT to be generated."
|
||
(let ((type (cdr (assq (aref data 0) x-dnd-offix-id-to-name)))
|
||
(data (x-window-property "_DND_SELECTION" frame nil 0 t)))
|
||
;; First save state.
|
||
(x-dnd-save-state window nil nil (vector type) nil)
|
||
;; Now call the test function to decide what action to perform.
|
||
(x-dnd-maybe-call-test-function window 'private)
|
||
(unwind-protect
|
||
(x-dnd-drop-data event frame window data
|
||
(symbol-name type))
|
||
(x-dnd-forget-drop window))))
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;;; XDND protocol.
|
||
|
||
(declare-function x-change-window-property "xfns.c"
|
||
(prop value &optional frame type format outer-P window-id))
|
||
|
||
(defun x-dnd-init-xdnd-for-frame (frame)
|
||
"Set the XdndAware property for FRAME to indicate that we do XDND."
|
||
(x-change-window-property "XdndAware"
|
||
'(5) ;; The version of XDND we support.
|
||
frame "ATOM" 32 t))
|
||
|
||
(defun x-dnd-get-drop-width-height (frame w accept)
|
||
"Return the width/height to be sent in a XDndStatus message.
|
||
FRAME is the frame and W is the window where the drop happened.
|
||
If ACCEPT is nil return 0 (empty rectangle),
|
||
otherwise if W is a window, return its width/height,
|
||
otherwise return the frame width/height."
|
||
(if accept
|
||
(if (windowp w) ;; w is not a window if dropping on the menu bar,
|
||
;; scroll bar or tool bar.
|
||
(let ((edges (window-inside-pixel-edges w)))
|
||
(cons
|
||
(- (nth 2 edges) (nth 0 edges)) ;; right - left
|
||
(- (nth 3 edges) (nth 1 edges)))) ;; bottom - top
|
||
(cons (frame-pixel-width frame)
|
||
(frame-pixel-height frame)))
|
||
0))
|
||
|
||
(defun x-dnd-get-drop-x-y (frame w)
|
||
"Return the x/y coordinates to be sent in a XDndStatus message.
|
||
Coordinates are required to be absolute.
|
||
FRAME is the frame and W is the window where the drop happened.
|
||
If W is a window, return its absolute coordinates,
|
||
otherwise return the frame coordinates."
|
||
(let* ((frame-left (or (car-safe (cdr-safe (frame-parameter frame 'left)))
|
||
(frame-parameter frame 'left)))
|
||
(frame-top (or (car-safe (cdr-safe (frame-parameter frame 'top)))
|
||
(frame-parameter frame 'top))))
|
||
(if (windowp w)
|
||
(let ((edges (window-inside-pixel-edges w)))
|
||
(cons
|
||
(+ frame-left (nth 0 edges))
|
||
(+ frame-top (nth 1 edges))))
|
||
(cons frame-left frame-top))))
|
||
|
||
(declare-function x-get-atom-name "xselect.c" (value &optional frame))
|
||
(declare-function x-send-client-message "xselect.c"
|
||
(display dest from message-type format values))
|
||
|
||
(defun x-dnd-version-from-flags (flags)
|
||
"Return the version byte from the 32 bit FLAGS in an XDndEnter message."
|
||
(ash flags -24))
|
||
|
||
(defun x-dnd-more-than-3-from-flags (flags)
|
||
"Return the nmore-than3 bit from the 32 bit FLAGS in an XDndEnter message."
|
||
(logand flags 1))
|
||
|
||
(defun x-dnd-handle-xdnd (event frame window message _format data)
|
||
"Receive one XDND event (client message) and send the appropriate reply.
|
||
EVENT is the client message. FRAME is where the mouse is now.
|
||
WINDOW is the window within FRAME where the mouse is now.
|
||
FORMAT is 32 (not used). MESSAGE is the data part of an XClientMessageEvent."
|
||
(cond ((equal "XdndEnter" message)
|
||
(let* ((flags (aref data 1))
|
||
(version (x-dnd-version-from-flags flags))
|
||
(more-than-3 (x-dnd-more-than-3-from-flags flags))
|
||
(dnd-source (aref data 0)))
|
||
(when version ;; If flags is bad, version will be nil.
|
||
(x-dnd-save-state
|
||
window nil nil
|
||
(if (> more-than-3 0)
|
||
(x-window-property "XdndTypeList"
|
||
frame "AnyPropertyType"
|
||
dnd-source nil t)
|
||
(vector (x-get-atom-name (aref data 2))
|
||
(x-get-atom-name (aref data 3))
|
||
(x-get-atom-name (aref data 4))))
|
||
version))))
|
||
|
||
((equal "XdndPosition" message)
|
||
(let* ((state (x-dnd-get-state-for-frame window))
|
||
(version (aref state 6))
|
||
(action (if (< version 2) 'copy ; `copy' is the default action.
|
||
(x-get-atom-name (aref data 4))))
|
||
(dnd-source (aref data 0))
|
||
(action-type (x-dnd-maybe-call-test-function
|
||
window
|
||
(cdr (assoc action x-dnd-xdnd-to-action))))
|
||
(reply-action (car (rassoc (car action-type)
|
||
x-dnd-xdnd-to-action)))
|
||
(accept ;; 1 = accept, 0 = reject
|
||
(if (and reply-action action-type
|
||
;; Only allow drops on the text area of a
|
||
;; window.
|
||
(not (posn-area (event-start event))))
|
||
1 0))
|
||
(list-to-send
|
||
(list (string-to-number
|
||
(frame-parameter frame 'outer-window-id))
|
||
accept ;; 1 = Accept, 0 = reject.
|
||
(x-dnd-get-drop-x-y frame window)
|
||
(x-dnd-get-drop-width-height
|
||
frame window (eq accept 1))
|
||
;; The no-toolkit Emacs build can actually
|
||
;; receive drops from programs that speak
|
||
;; versions of XDND earlier than 3 (such as
|
||
;; GNUstep), since the toplevel window is the
|
||
;; innermost window.
|
||
(if (>= version 2)
|
||
(or reply-action 0)
|
||
0))))
|
||
(x-send-client-message
|
||
frame dnd-source frame "XdndStatus" 32 list-to-send)
|
||
(dnd-handle-movement (event-start event))))
|
||
|
||
((equal "XdndLeave" message)
|
||
(x-dnd-forget-drop window))
|
||
|
||
((equal "XdndDrop" message)
|
||
(if (windowp window) (select-window window))
|
||
(let* ((state (x-dnd-get-state-for-frame frame))
|
||
(version (aref state 6))
|
||
(dnd-source (aref data 0))
|
||
(timestamp (aref data 2))
|
||
(value (and (x-dnd-current-type window)
|
||
(x-get-selection-internal
|
||
'XdndSelection
|
||
(intern (x-dnd-current-type window))
|
||
timestamp)))
|
||
success action)
|
||
(x-display-set-last-user-time timestamp)
|
||
(unwind-protect
|
||
(setq action (if value
|
||
(condition-case info
|
||
(x-dnd-drop-data
|
||
event frame window value
|
||
(x-dnd-current-type window))
|
||
(error
|
||
(message "Error: %s" info)
|
||
nil))))
|
||
(setq success (if action 1 0))
|
||
(when (>= version 2)
|
||
(x-send-client-message
|
||
frame dnd-source frame "XdndFinished" 32
|
||
(list (string-to-number
|
||
(frame-parameter frame 'outer-window-id))
|
||
(if (>= version 5) success 0) ;; 1 = Success, 0 = Error
|
||
(if (or (not success) (< version 5)) 0
|
||
(or (car (rassoc action
|
||
x-dnd-xdnd-to-action))
|
||
0))))))
|
||
(x-dnd-forget-drop window)))
|
||
|
||
(t (error "Unknown XDND message %s %s" message data))))
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;;; Motif protocol.
|
||
|
||
(defun x-dnd-init-motif-for-frame (frame)
|
||
"Set _MOTIF_DRAG_RECEIVER_INFO for FRAME to indicate that we do Motif DND."
|
||
(x-change-window-property "_MOTIF_DRAG_RECEIVER_INFO"
|
||
(list
|
||
(byteorder)
|
||
0 ; The Motif DND version.
|
||
5 ; We want drag dynamic.
|
||
0 0 0 0 0 0 0
|
||
0 0 0 0 0 0) ; Property must be 16 bytes.
|
||
frame "_MOTIF_DRAG_RECEIVER_INFO" 8 t))
|
||
|
||
(defun x-dnd-get-motif-value (data offset size byteorder)
|
||
(cond ((eq size 2)
|
||
(if (eq byteorder ?l)
|
||
(+ (ash (aref data (1+ offset)) 8)
|
||
(aref data offset))
|
||
(+ (ash (aref data offset) 8)
|
||
(aref data (1+ offset)))))
|
||
|
||
((eq size 4)
|
||
(if (eq byteorder ?l)
|
||
(+ (ash (aref data (+ 3 offset)) 24)
|
||
(ash (aref data (+ 2 offset)) 16)
|
||
(ash (aref data (1+ offset)) 8)
|
||
(aref data offset))
|
||
(+ (ash (aref data offset) 24)
|
||
(ash (aref data (1+ offset)) 16)
|
||
(ash (aref data (+ 2 offset)) 8)
|
||
(aref data (+ 3 offset)))))))
|
||
|
||
(defun x-dnd-motif-value-to-list (value size byteorder)
|
||
(let ((bytes (cond ((eq size 2)
|
||
(list (logand (ash value -8) ?\xff)
|
||
(logand value ?\xff)))
|
||
|
||
((eq size 4)
|
||
(list (logand (ash value -24) ?\xff)
|
||
(logand (ash value -16) ?\xff)
|
||
(logand (ash value -8) ?\xff)
|
||
(logand value ?\xff))))))
|
||
(if (eq byteorder ?l)
|
||
(reverse bytes)
|
||
bytes)))
|
||
|
||
(defun x-dnd-xm-unpack-targets-table-header (data)
|
||
"Decode the header of DATA, a Motif targets table.
|
||
Return a list of the following fields with the given types:
|
||
|
||
Field name Type
|
||
- BYTE_ORDER BYTE
|
||
- PROTOCOL BYTE
|
||
- TARGET_LIST_COUNT CARD16
|
||
- TOTAL_DATA_SIZE CARD32"
|
||
(let* ((byte-order (aref data 0))
|
||
(protocol (aref data 1))
|
||
(target-list-count (x-dnd-get-motif-value
|
||
data 2 2 byte-order))
|
||
(total-data-size (x-dnd-get-motif-value
|
||
data 4 4 byte-order)))
|
||
(list byte-order protocol target-list-count
|
||
total-data-size)))
|
||
|
||
(defun x-dnd-xm-read-single-rec (data i)
|
||
"Read a single rec from DATA, a Motif targets table.
|
||
I is the offset into DATA to begin reading at. Return a list
|
||
of (CONSUMED NTARGETS TARGETS), where CONSUMED is the number of
|
||
bytes read from DATA, NTARGETS is the total number of targets
|
||
inside the current rec, and TARGETS is a vector of atoms
|
||
describing the selection targets in the current rec."
|
||
(let* ((byte-order (aref data 0))
|
||
(n-targets (x-dnd-get-motif-value
|
||
data i 2 byte-order))
|
||
(targets (make-vector n-targets nil))
|
||
(consumed 0))
|
||
(while (< consumed n-targets)
|
||
(aset targets consumed (x-dnd-get-motif-value
|
||
data (+ i 2 (* consumed 4))
|
||
4 byte-order))
|
||
(setq consumed (1+ consumed)))
|
||
(list (+ 2 (* consumed 4)) n-targets targets)))
|
||
|
||
(defun x-dnd-xm-read-targets-table (frame)
|
||
"Read the Motif targets table on FRAME.
|
||
Return a vector of vectors of numbers, which are the atoms of the
|
||
available selection targets for each index into the selection
|
||
table."
|
||
(let* ((drag-window (x-window-property "_MOTIF_DRAG_WINDOW"
|
||
frame "WINDOW" 0 nil t))
|
||
(targets-data (x-window-property "_MOTIF_DRAG_TARGETS"
|
||
frame "_MOTIF_DRAG_TARGETS"
|
||
drag-window nil t))
|
||
(header (x-dnd-xm-unpack-targets-table-header targets-data))
|
||
(vec (make-vector (nth 2 header) nil))
|
||
(current-byte 8)
|
||
(i 0))
|
||
(unless (stringp targets-data)
|
||
(error "Expected format 8, got %s" (type-of targets-data)))
|
||
(prog1 vec
|
||
(while (< i (nth 2 header))
|
||
(let ((rec (x-dnd-xm-read-single-rec targets-data
|
||
current-byte)))
|
||
(aset vec i (nth 2 rec))
|
||
(setq current-byte (+ current-byte (car rec)))
|
||
(setq i (1+ i))))
|
||
(unless (eq current-byte (nth 3 header))
|
||
(error "Targets table header says size is %d, but it is actually %d"
|
||
(nth 3 header) current-byte)))))
|
||
|
||
(defun x-dnd-xm-read-targets (frame window selection)
|
||
"Read targets of SELECTION on FRAME from the targets table.
|
||
WINDOW should be the drag-and-drop operation's initiator.
|
||
Return a vector of atoms containing the selection targets."
|
||
(let* ((targets-table (x-dnd-xm-read-targets-table frame))
|
||
(initiator-info (x-window-property selection frame
|
||
"_MOTIF_DRAG_INITIATOR_INFO"
|
||
window nil nil))
|
||
(byte-order (aref initiator-info 0))
|
||
(idx (x-dnd-get-motif-value initiator-info
|
||
2 2 byte-order))
|
||
(vector (aref targets-table idx))
|
||
(i 0))
|
||
(prog1 vector
|
||
(while (< i (length vector))
|
||
(aset vector i
|
||
(intern (x-get-atom-name (aref vector i))))
|
||
(setq i (1+ i))))))
|
||
|
||
(defvar x-dnd-motif-message-types
|
||
'((0 . XmTOP_LEVEL_ENTER)
|
||
(1 . XmTOP_LEVEL_LEAVE)
|
||
(2 . XmDRAG_MOTION)
|
||
(3 . XmDROP_SITE_ENTER)
|
||
(4 . XmDROP_SITE_LEAVE)
|
||
(5 . XmDROP_START)
|
||
(6 . XmDROP_FINISH)
|
||
(7 . XmDRAG_DROP_FINISH)
|
||
(8 . XmOPERATION_CHANGED))
|
||
"Mapping from numbers to Motif DND message types.")
|
||
|
||
(defvar x-dnd-motif-to-action
|
||
'((1 . move)
|
||
(2 . copy)
|
||
(3 . link) ; Both 3 and 4 has been seen as link.
|
||
(4 . link)
|
||
(2 . private)) ; Motif does not have private, so use copy for private.
|
||
"Mapping from number to operation for Motif DND.")
|
||
|
||
(defun x-dnd-handle-motif (event frame window _message-atom _format data)
|
||
(let* ((message-type (cdr (assoc (logand (aref data 0) #x3f)
|
||
x-dnd-motif-message-types)))
|
||
(initiator-p (eq (lsh (aref data 0) -7) 0))
|
||
(source-byteorder (aref data 1))
|
||
(my-byteorder (byteorder))
|
||
(source-flags (x-dnd-get-motif-value data 2 2 source-byteorder))
|
||
(source-action (cdr (assoc (logand ?\xF source-flags)
|
||
x-dnd-motif-to-action))))
|
||
|
||
(when initiator-p
|
||
(cond ((eq message-type 'XmTOP_LEVEL_ENTER)
|
||
(let* ((dnd-source (x-dnd-get-motif-value
|
||
data 8 4 source-byteorder))
|
||
(selection-atom (x-dnd-get-motif-value
|
||
data 12 4 source-byteorder))
|
||
(atom-name (x-get-atom-name selection-atom))
|
||
(types (x-dnd-xm-read-targets frame dnd-source
|
||
atom-name)))
|
||
(x-dnd-forget-drop frame)
|
||
(when types (x-dnd-save-state window nil nil
|
||
types dnd-source))))
|
||
|
||
;; Can not forget drop here, LEAVE comes before DROP_START and
|
||
;; we need the state in DROP_START.
|
||
((eq message-type 'XmTOP_LEVEL_LEAVE)
|
||
nil)
|
||
|
||
((eq message-type 'XmDRAG_MOTION)
|
||
(let* ((state (x-dnd-get-state-for-frame frame))
|
||
(timestamp (x-dnd-motif-value-to-list
|
||
(x-dnd-get-motif-value data 4 4
|
||
source-byteorder)
|
||
4 my-byteorder))
|
||
(x (x-dnd-motif-value-to-list
|
||
(x-dnd-get-motif-value data 8 2 source-byteorder)
|
||
2 my-byteorder))
|
||
(y (x-dnd-motif-value-to-list
|
||
(x-dnd-get-motif-value data 10 2 source-byteorder)
|
||
2 my-byteorder))
|
||
(dnd-source (aref state 6))
|
||
(first-move (not (aref state 3)))
|
||
(action-type (x-dnd-maybe-call-test-function
|
||
window
|
||
source-action))
|
||
(reply-action (car (rassoc (car action-type)
|
||
x-dnd-motif-to-action)))
|
||
(reply-flags
|
||
(if (posn-area (event-start event))
|
||
(x-dnd-motif-value-to-list ?\x20 ; 20: invalid drop site
|
||
2 my-byteorder)
|
||
(x-dnd-motif-value-to-list
|
||
(if reply-action
|
||
(+ reply-action
|
||
?\x30 ; 30: valid drop site
|
||
?\x700) ; 700: can do copy, move or link
|
||
?\x30) ; 30: drop site, but noop.
|
||
2 my-byteorder)))
|
||
(reply (append
|
||
(list
|
||
(+ ?\x80 ; 0x80 indicates a reply.
|
||
(if first-move
|
||
3 ; First time, reply is SITE_ENTER.
|
||
2)) ; Not first time, reply is DRAG_MOTION.
|
||
my-byteorder)
|
||
reply-flags
|
||
timestamp
|
||
x
|
||
y)))
|
||
(x-display-set-last-user-time timestamp)
|
||
(x-send-client-message frame
|
||
dnd-source
|
||
frame
|
||
"_MOTIF_DRAG_AND_DROP_MESSAGE"
|
||
8
|
||
reply)
|
||
(dnd-handle-movement (event-start event))))
|
||
|
||
((eq message-type 'XmOPERATION_CHANGED)
|
||
(let* ((state (x-dnd-get-state-for-frame frame))
|
||
(timestamp (x-dnd-motif-value-to-list
|
||
(x-dnd-get-motif-value data 4 4 source-byteorder)
|
||
4 my-byteorder))
|
||
(dnd-source (aref state 6))
|
||
(action-type (x-dnd-maybe-call-test-function
|
||
window
|
||
source-action))
|
||
(reply-action (car (rassoc (car action-type)
|
||
x-dnd-motif-to-action)))
|
||
(reply-flags
|
||
(if (posn-area (event-start event))
|
||
(x-dnd-motif-value-to-list ?\x20 ; 20: invalid drop site
|
||
2 my-byteorder)
|
||
(x-dnd-motif-value-to-list
|
||
(if reply-action
|
||
(+ reply-action
|
||
?\x30 ; 30: valid drop site
|
||
?\x700) ; 700: can do copy, move or link
|
||
?\x30) ; 30: drop site, but noop.
|
||
2 my-byteorder)))
|
||
(reply (append
|
||
(list
|
||
(+ ?\x80 ; 0x80 indicates a reply.
|
||
8) ; 8 is OPERATION_CHANGED
|
||
my-byteorder)
|
||
reply-flags
|
||
timestamp)))
|
||
(x-display-set-last-user-time timestamp)
|
||
(x-send-client-message frame
|
||
dnd-source
|
||
frame
|
||
"_MOTIF_DRAG_AND_DROP_MESSAGE"
|
||
8
|
||
reply)))
|
||
|
||
((eq message-type 'XmDROP_START)
|
||
(let* ((x (x-dnd-motif-value-to-list
|
||
(x-dnd-get-motif-value data 8 2 source-byteorder)
|
||
2 my-byteorder))
|
||
(y (x-dnd-motif-value-to-list
|
||
(x-dnd-get-motif-value data 10 2 source-byteorder)
|
||
2 my-byteorder))
|
||
(selection-atom (x-dnd-get-motif-value
|
||
data 12 4 source-byteorder))
|
||
(atom-name (x-get-atom-name selection-atom))
|
||
(dnd-source (x-dnd-get-motif-value
|
||
data 16 4 source-byteorder)))
|
||
|
||
;; This might be a drop from a program that doesn't use
|
||
;; the Motif drag protocol. Compute all the necessary
|
||
;; state here if that is true.
|
||
(unless (and (x-dnd-get-state-for-frame frame)
|
||
(aref (x-dnd-get-state-for-frame frame) 2))
|
||
(x-dnd-forget-drop frame)
|
||
(let ((types (x-dnd-xm-read-targets frame dnd-source
|
||
atom-name)))
|
||
(x-dnd-save-state window nil nil types dnd-source)))
|
||
|
||
(let* ((action-type (x-dnd-maybe-call-test-function
|
||
window
|
||
source-action))
|
||
(reply-action (and (not (posn-area (event-start event)))
|
||
(car (rassoc (car action-type)
|
||
x-dnd-motif-to-action))))
|
||
(reply-flags
|
||
(x-dnd-motif-value-to-list
|
||
(if (posn-area (event-start event))
|
||
(+ ?\x20 ; 20: invalid drop site
|
||
?\x200) ; 200: drop cancel
|
||
(if reply-action
|
||
(+ reply-action
|
||
?\x30 ; 30: valid drop site
|
||
?\x700) ; 700: can do copy, move or link
|
||
(+ ?\x30 ; 30: drop site, but noop.
|
||
?\x200))) ; 200: drop cancel.
|
||
2 my-byteorder))
|
||
(reply (append
|
||
(list
|
||
(+ ?\x80 ; 0x80 indicates a reply.
|
||
5) ; DROP_START.
|
||
my-byteorder)
|
||
reply-flags
|
||
x y))
|
||
(timestamp (x-dnd-get-motif-value
|
||
data 4 4 source-byteorder))
|
||
action)
|
||
(x-display-set-last-user-time timestamp)
|
||
(x-send-client-message frame
|
||
dnd-source
|
||
frame
|
||
"_MOTIF_DRAG_AND_DROP_MESSAGE"
|
||
8
|
||
reply)
|
||
(unwind-protect
|
||
(setq action
|
||
(when (and reply-action atom-name)
|
||
(let* ((value (x-get-selection-internal
|
||
(intern atom-name)
|
||
(intern (x-dnd-current-type window))
|
||
timestamp)))
|
||
(when value
|
||
(condition-case info
|
||
(x-dnd-drop-data event frame window value
|
||
(x-dnd-current-type window))
|
||
(error
|
||
(message "Error: %s" info)
|
||
nil))))))
|
||
(x-get-selection-internal
|
||
(intern atom-name)
|
||
(if action 'XmTRANSFER_SUCCESS 'XmTRANSFER_FAILURE)
|
||
timestamp)
|
||
(x-dnd-forget-drop frame)))))
|
||
|
||
(t (message "Unknown Motif drag-and-drop message: %s"
|
||
(logand (aref data 0) #x3f)))))))
|
||
|
||
|
||
;;;
|
||
|
||
|
||
|
||
;;; Handling drops.
|
||
|
||
(defvar x-treat-local-requests-remotely)
|
||
|
||
(defun x-dnd-convert-to-offix (targets)
|
||
"Convert the contents of `XdndSelection' to OffiX data.
|
||
TARGETS should be the list of targets currently available in
|
||
`XdndSelection'. Return a list of an OffiX type, and data
|
||
suitable for passing to `x-change-window-property', or nil if the
|
||
data could not be converted."
|
||
(let ((x-treat-local-requests-remotely t)
|
||
file-name-data string-data)
|
||
(cond
|
||
((and (member "FILE_NAME" targets)
|
||
(setq file-name-data
|
||
(gui-get-selection 'XdndSelection 'FILE_NAME)))
|
||
(if (string-match-p "\0" file-name-data)
|
||
;; This means there are multiple file names in
|
||
;; XdndSelection. Convert the file name data to a format
|
||
;; that OffiX understands.
|
||
(cons 'DndTypeFiles (concat file-name-data "\0\0"))
|
||
(cons 'DndTypeFile (concat file-name-data "\0"))))
|
||
((and (member "STRING" targets)
|
||
(setq string-data
|
||
(gui-get-selection 'XdndSelection 'STRING)))
|
||
(cons 'DndTypeText (encode-coding-string string-data
|
||
'latin-1))))))
|
||
|
||
(defun x-dnd-do-offix-drop (targets x y frame window-id)
|
||
"Perform an OffiX drop on WINDOW-ID with the contents of `XdndSelection'.
|
||
Return non-nil if the drop succeeded, or nil if it did not
|
||
happen, which can happen if TARGETS didn't contain anything that
|
||
the OffiX protocol can represent.
|
||
|
||
X and Y are the root window coordinates of the drop. TARGETS is
|
||
the list of targets `XdndSelection' can be converted to."
|
||
(if-let* ((data (x-dnd-convert-to-offix targets))
|
||
(type-id (car (rassq (car data)
|
||
x-dnd-offix-id-to-name)))
|
||
(source-id (string-to-number
|
||
(frame-parameter frame 'window-id)))
|
||
(message-data (list type-id ; l[0] = DataType
|
||
0 ; l[1] = event->xbutton.state
|
||
source-id ; l[2] = window
|
||
(+ x (* 65536 y)) ; l[3] = drop_x + 65536 * drop_y
|
||
1))) ; l[4] = protocol version
|
||
(prog1 t
|
||
;; Send a legacy (old KDE) message first. Newer clients will
|
||
;; ignore it, since the protocol version is 1.
|
||
(x-change-window-property "DndSelection"
|
||
(cdr data) frame
|
||
"STRING" 8 nil 0)
|
||
(x-send-client-message frame window-id
|
||
frame "DndProtocol"
|
||
32 message-data)
|
||
;; Now send a modern _DND_PROTOCOL message.
|
||
(x-change-window-property "_DND_SELECTION"
|
||
(cdr data) frame
|
||
"STRING" 8 nil 0)
|
||
(x-send-client-message frame window-id
|
||
frame "_DND_PROTOCOL"
|
||
32 message-data))))
|
||
|
||
(defun x-dnd-handle-unsupported-drop (targets x y action window-id frame _time)
|
||
"Return non-nil if the drop described by TARGETS and ACTION should not proceed.
|
||
X and Y are the root window coordinates of the drop.
|
||
FRAME is the frame the drop originated on.
|
||
WINDOW-ID is the X window the drop should happen to."
|
||
(not (and (or (eq action 'XdndActionCopy)
|
||
(eq action 'XdndActionMove))
|
||
(not (and x-dnd-use-offix-drop
|
||
(or (not (eq x-dnd-use-offix-drop 'files))
|
||
(member "FILE_NAME" targets))
|
||
(x-dnd-do-offix-drop targets x
|
||
y frame window-id)))
|
||
(or
|
||
(member "STRING" targets)
|
||
(member "UTF8_STRING" targets)
|
||
(member "COMPOUND_TEXT" targets)
|
||
(member "TEXT" targets)))))
|
||
|
||
(defvar x-dnd-targets-list)
|
||
(defvar x-dnd-native-test-function)
|
||
|
||
(defun x-dnd-handle-native-drop (pos action)
|
||
"Compute the action for a drop at POS.
|
||
Return the appropriate drag-and-drop action for a local drop at POS.
|
||
ACTION is the action given to `x-begin-drag'."
|
||
(let ((state (funcall x-dnd-test-function
|
||
(posn-window pos)
|
||
(cdr (assoc (symbol-name action)
|
||
x-dnd-xdnd-to-action))
|
||
(apply #'vector x-dnd-targets-list))))
|
||
(when state
|
||
(intern (car (rassq (car state) x-dnd-xdnd-to-action))))))
|
||
|
||
(setq x-dnd-native-test-function #'x-dnd-handle-native-drop)
|
||
|
||
(provide 'x-dnd)
|
||
|
||
;;; x-dnd.el ends here
|