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Code Issues Releases Activity

Improve appearance of custom dialog buttons on Android

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* java/org/gnu/emacs/EmacsDialog.java (toAlertDialog): Resolve
dialog button style and use it instead.
This commit is contained in:
Po Lu 2023-06-12 20:09:09 +08:00
parent 3b08bb1318
commit 1cd514c297
1 changed files with 60 additions and 12 deletions
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72
java/org/gnu/emacs/EmacsDialog.java
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@ -27,6 +27,10 @@
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.Resources.NotFoundException;
import android.content.res.Resources.Theme;
import android.content.res.TypedArray;
import android.os.Build;
import android.provider.Settings;
@ -148,13 +152,17 @@ private final class EmacsButton implements View.OnClickListener,
toAlertDialog (Context context)
{
AlertDialog dialog;
int size;
int size, styleId;
int[] attrs;
EmacsButton button;
EmacsDialogButtonLayout layout;
Button buttonView;
ViewGroup.LayoutParams layoutParams;
Theme theme;
TypedArray attributes;
size = buttons.size ();
styleId = -1;
if (size <= 3)
{
@ -193,19 +201,10 @@ private final class EmacsButton implements View.OnClickListener,
else
{
/* There are more than 3 buttons. Add them all to a special
container widget that handles wrapping. */
container widget that handles wrapping. First, create the
layout. */
layout = new EmacsDialogButtonLayout (context);
for (EmacsButton emacsButton : buttons)
{
buttonView = new Button (context);
buttonView.setText (emacsButton.name);
buttonView.setOnClickListener (emacsButton);
buttonView.setEnabled (emacsButton.enabled);
layout.addView (buttonView);
}
layoutParams
= new FrameLayout.LayoutParams (ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
@ -223,6 +222,55 @@ private final class EmacsButton implements View.OnClickListener,
if (title != null)
dialog.setTitle (title);
/* Now that the dialog has been created, set the style of each
custom button to match the usual dialog buttons found on
Android 5 and later. */
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
{
/* Obtain the Theme associated with the dialog. */
theme = dialog.getContext ().getTheme ();
/* Resolve the dialog button style. */
attrs
= new int [] { android.R.attr.buttonBarNeutralButtonStyle, };
try
{
attributes = theme.obtainStyledAttributes (attrs);
/* Look for the style ID. Default to -1 if it could
not be found. */
styleId = attributes.getResourceId (0, -1);
/* Now clean up the TypedAttributes object. */
attributes.recycle ();
}
catch (NotFoundException e)
{
/* Nothing to do here. */
}
}
/* Create each button and add it to the layout. Set the style
if necessary. */
for (EmacsButton emacsButton : buttons)
{
if (styleId == -1)
/* No specific style... */
buttonView = new Button (context);
else
/* Use the given styleId. */
buttonView = new Button (context, null, 0, styleId);
/* Set the text and on click handler. */
buttonView.setText (emacsButton.name);
buttonView.setOnClickListener (emacsButton);
buttonView.setEnabled (emacsButton.enabled);
layout.addView (buttonView);
}
}
return dialog;