| /* |
| * 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(); |
| } |
| } |