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/*
* Copyright (C) 2011 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.launcher2;
import java.util.Random;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ObjectAnimator;
import android.animation.ValueAnimator;
import android.content.Context;
import android.content.res.Resources;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TabHost;
import android.widget.TabWidget;
import android.widget.TextView;
import com.android.launcher.R;
import com.android.launcher2.CustomizePagedView.CustomizationType;
public class CustomizeTrayTabHost extends TabHost implements LauncherTransitionable {
// tags for the customization tabs
private static final String WIDGETS_TAG = "widgets";
private static final String APPLICATIONS_TAG = "applications";
private static final String SHORTCUTS_TAG = "shortcuts";
private static final String WALLPAPERS_TAG = "wallpapers";
private boolean mFirstLayout = true;
private final LayoutInflater mInflater;
private Context mContext;
public CustomizeTrayTabHost(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
mInflater = LayoutInflater.from(context);
}
@Override
protected void onFinishInflate() {
setup();
final CustomizePagedView customizePagedView =
(CustomizePagedView) findViewById(R.id.customization_drawer_tab_contents);
// Configure tabs
TabContentFactory contentFactory = new TabContentFactory() {
public View createTabContent(String tag) {
return customizePagedView;
}
};
TextView tabView;
TabWidget tabWidget = (TabWidget) findViewById(com.android.internal.R.id.tabs);
tabView = (TextView) mInflater.inflate(R.layout.tab_widget_indicator, tabWidget, false);
tabView.setText(mContext.getString(R.string.widgets_tab_label));
addTab(newTabSpec(WIDGETS_TAG)
.setIndicator(tabView).setContent(contentFactory));
tabView = (TextView) mInflater.inflate(R.layout.tab_widget_indicator, tabWidget, false);
tabView.setText(mContext.getString(R.string.applications_tab_label));
addTab(newTabSpec(APPLICATIONS_TAG)
.setIndicator(tabView).setContent(contentFactory));
tabView = (TextView) mInflater.inflate(R.layout.tab_widget_indicator, tabWidget, false);
tabView.setText(mContext.getString(R.string.wallpapers_tab_label));
addTab(newTabSpec(WALLPAPERS_TAG)
.setIndicator(tabView).setContent(contentFactory));
tabView = (TextView) mInflater.inflate(R.layout.tab_widget_indicator, tabWidget, false);
tabView.setText(mContext.getString(R.string.shortcuts_tab_label));
addTab(newTabSpec(SHORTCUTS_TAG)
.setIndicator(tabView).setContent(contentFactory));
setOnTabChangedListener(new OnTabChangeListener() {
public void onTabChanged(String tabId) {
final CustomizePagedView.CustomizationType newType =
getCustomizeFilterForTabTag(tabId);
if (newType != customizePagedView.getCustomizationFilter()) {
// animate the changing of the tab content by fading pages in and out
final Resources res = getResources();
final int duration = res.getInteger(R.integer.config_tabTransitionDuration);
final float alpha = customizePagedView.getAlpha();
ValueAnimator alphaAnim = ObjectAnimator.ofFloat(customizePagedView,
"alpha", alpha, 0.0f);
alphaAnim.setDuration(duration);
alphaAnim.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
customizePagedView.setCustomizationFilter(newType);
final float alpha = customizePagedView.getAlpha();
ValueAnimator alphaAnim = ObjectAnimator.ofFloat(
customizePagedView, "alpha", alpha, 1.0f);
alphaAnim.setDuration(duration);
alphaAnim.start();
}
});
alphaAnim.start();
}
}
});
}
@Override
public void onLauncherTransitionStart(Animator animation) {
if (animation != null) {
setLayerType(LAYER_TYPE_HARDWARE, null);
// just a sanity check that we don't build a layer before a call to onLayout
if (!mFirstLayout) {
// force building the layer at the beginning of the animation, so you don't get a
// blip early in the animation
buildLayer();
}
}
}
@Override
public void onLauncherTransitionEnd(Animator animation) {
if (animation != null) {
setLayerType(LAYER_TYPE_NONE, null);
}
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
if (mFirstLayout) {
mFirstLayout = false;
final CustomizePagedView customizePagedView =
(CustomizePagedView) findViewById(R.id.customization_drawer_tab_contents);
TabWidget tabWidget = (TabWidget) findViewById(com.android.internal.R.id.tabs);
// Set the width of the tab bar properly
int pageWidth = customizePagedView.getPageContentWidth();
TabWidget customizeTabBar = (TabWidget) findViewById(com.android.internal.R.id.tabs);
if (customizeTabBar == null) throw new Resources.NotFoundException();
int tabWidgetPadding = 0;
final int childCount = tabWidget.getChildCount();
if (childCount > 0) {
tabWidgetPadding += tabWidget.getChildAt(0).getPaddingLeft() * 2;
}
customizeTabBar.getLayoutParams().width = pageWidth + tabWidgetPadding;
}
super.onLayout(changed, l, t, r, b);
}
@Override
public int getDescendantFocusability() {
if (getVisibility() != View.VISIBLE) {
return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
}
return super.getDescendantFocusability();
}
CustomizationType getCustomizeFilterForTabTag(String tag) {
if (tag.equals(WIDGETS_TAG)) {
return CustomizationType.WidgetCustomization;
} else if (tag.equals(APPLICATIONS_TAG)) {
return CustomizationType.ApplicationCustomization;
} else if (tag.equals(WALLPAPERS_TAG)) {
return CustomizePagedView.CustomizationType.WallpaperCustomization;
} else if (tag.equals(SHORTCUTS_TAG)) {
return CustomizePagedView.CustomizationType.ShortcutCustomization;
}
return CustomizationType.WidgetCustomization;
}
}
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