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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.gallery3d.photoeditor;
import android.content.Context;
import android.content.res.Configuration;
import android.util.AttributeSet;
import android.widget.ViewSwitcher;
import com.android.gallery3d.R;
/**
* Action bar that contains buttons such as undo, redo, save, etc.
*/
public class ActionBar extends RestorableView {
public ActionBar(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected int childLayoutId() {
return R.layout.photoeditor_actionbar;
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
super.onLayout(changed, l, t, r, b);
// Show the action-bar title only when there's still room for it; otherwise, hide it.
int width = 0;
for (int i = 0; i < getChildCount(); i++) {
width += getChildAt(i).getWidth();
}
findViewById(R.id.action_bar_title).setVisibility(((width > r - l)) ? INVISIBLE: VISIBLE);
}
@Override
protected void onFinishInflate() {
super.onFinishInflate();
updateButtons(false, false);
}
@Override
protected void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
showSaveOrShare();
}
/**
* Save/share button may need being switched when undo/save enabled status is changed/restored.
*/
private void showSaveOrShare() {
// Show share-button only after photo is edited and saved; otherwise, show save-button.
boolean showShare = findViewById(R.id.undo_button).isEnabled()
&& !findViewById(R.id.save_button).isEnabled();
ViewSwitcher switcher = (ViewSwitcher) findViewById(R.id.save_share_buttons);
int next = switcher.getNextView().getId();
if ((showShare && (next == R.id.share_button))
|| (!showShare && (next == R.id.save_button))) {
switcher.showNext();
}
}
public void updateButtons(boolean canUndo, boolean canRedo) {
setViewEnabled(R.id.undo_button, canUndo);
setViewEnabled(R.id.redo_button, canRedo);
setViewEnabled(R.id.save_button, canUndo);
showSaveOrShare();
}
public void updateSave(boolean canSave) {
setViewEnabled(R.id.save_button, canSave);
showSaveOrShare();
}
public void clickBack() {
findViewById(R.id.action_bar_back).performClick();
}
public boolean canSave() {
return findViewById(R.id.save_button).isEnabled();
}
}
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