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/* Communication module for Android terminals. -*- c-file-style: "GNU" -*-
Copyright (C) 2023-2024 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or (at
your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
package org.gnu.emacs;
import android.content.Context;
import android.view.View;
import android.view.View.MeasureSpec;
import android.view.ViewGroup;
/* This ``view group'' implements a container widget for multiple
buttons of the type found in pop-up dialogs. It is used when
displaying a dialog box that contains more than three buttons, as
the default dialog box widget is not capable of holding more than
that many. */
public final class EmacsDialogButtonLayout extends ViewGroup
{
public
EmacsDialogButtonLayout (Context context)
{
super (context);
}
@Override
protected void
onMeasure (int widthMeasureSpec, int heightMeasureSpec)
{
int width, count, i, x, y, height, spec, tempSpec;
View view;
/* Obtain the width of this widget and create the measure
specification used to measure children. */
width = MeasureSpec.getSize (widthMeasureSpec);
spec = MeasureSpec.makeMeasureSpec (0, MeasureSpec.UNSPECIFIED);
tempSpec
= MeasureSpec.makeMeasureSpec (width, MeasureSpec.AT_MOST);
x = y = height = 0;
/* Run through each widget. */
count = getChildCount ();
for (i = 0; i < count; ++i)
{
view = getChildAt (i);
/* Measure this view. */
view.measure (spec, spec);
if (width - x < view.getMeasuredWidth ())
{
/* Move onto the next line, unless this line is empty. */
if (x != 0)
{
y += height;
height = x = 0;
}
if (view.getMeasuredWidth () > width)
/* Measure the view again, this time forcing it to be at
most width wide, if it is not already. */
view.measure (tempSpec, spec);
}
height = Math.max (height, view.getMeasuredHeight ());
x += view.getMeasuredWidth ();
}
/* Now set the measured size of this widget. */
setMeasuredDimension (width, y + height);
}
@Override
protected void
onLayout (boolean changed, int left, int top, int right,
int bottom)
{
int width, count, i, x, y, height, spec, tempSpec;
View view;
/* Obtain the width of this widget and create the measure
specification used to measure children. */
width = getMeasuredWidth ();
spec = MeasureSpec.makeMeasureSpec (0, MeasureSpec.UNSPECIFIED);
tempSpec
= MeasureSpec.makeMeasureSpec (width, MeasureSpec.AT_MOST);
x = y = height = 0;
/* Run through each widget. */
count = getChildCount ();
for (i = 0; i < count; ++i)
{
view = getChildAt (i);
/* Measure this view. */
view.measure (spec, spec);
if (width - x < view.getMeasuredWidth ())
{
/* Move onto the next line, unless this line is empty. */
if (x != 0)
{
y += height;
height = x = 0;
}
if (view.getMeasuredWidth () > width)
/* Measure the view again, this time forcing it to be at
most width wide, if it is not already. */
view.measure (tempSpec, spec);
}
/* Now assign this view its position. */
view.layout (x, y, x + view.getMeasuredWidth (),
y + view.getMeasuredHeight ());
/* And move on to the next widget. */
height = Math.max (height, view.getMeasuredHeight ());
x += view.getMeasuredWidth ();
}
}
};
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