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/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.widget;
import android.content.Context;
import android.content.res.TypedArray;
import android.text.Layout;
import android.util.AttributeSet;
import org.mozilla.gecko.R;
import org.mozilla.gecko.widget.themed.ThemedTextView;
/**
* An implementation of FadedTextView should fade the end of the text
* by gecko:fadeWidth amount, if the text is too long and requires an ellipsis.
*/
public abstract class FadedTextView extends ThemedTextView {
// Width of the fade effect from end of the view.
protected final int fadeWidth;
public FadedTextView(final Context context, final AttributeSet attrs) {
super(context, attrs);
setSingleLine(true);
setEllipsize(null);
final TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.FadedTextView);
fadeWidth = a.getDimensionPixelSize(R.styleable.FadedTextView_fadeWidth, 0);
a.recycle();
}
protected int getAvailableWidth() {
return getWidth() - getCompoundPaddingLeft() - getCompoundPaddingRight();
}
protected boolean needsEllipsis() {
final int width = getAvailableWidth();
if (width <= 0) {
return false;
}
final Layout layout = getLayout();
return (layout != null && layout.getLineWidth(0) > width);
}
}
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