src/com/android/launcher2/AllAppsTabbed.java - fp2-dev/platform/packages/apps/Launcher2 - Gitiles

 /*
  * 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.launcher2;

 import com.android.launcher.R;

 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.util.Log;
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TabHost;
 import android.widget.TabWidget;
 import android.widget.TextView;

 import java.util.ArrayList;
 import java.util.Random;

 /**
  * Implements a tabbed version of AllApps2D.
  */
 public class AllAppsTabbed extends TabHost implements AllAppsView, LauncherTransitionable {

     private static final String TAG = "Launcher.AllAppsTabbed";

     private static final String TAG_ALL = "ALL";
     private static final String TAG_DOWNLOADED = "DOWNLOADED";

     private AllAppsPagedView mAllApps;
     private AllAppsBackground mBackground;
     private Launcher mLauncher;
     private Context mContext;
     private final LayoutInflater mInflater;
     private boolean mFirstLayout = true;

     public AllAppsTabbed(Context context, AttributeSet attrs) {
         super(context, attrs);
         mContext = context;
         mInflater = LayoutInflater.from(context);
     }

     @Override
     protected void onFinishInflate() {
         // setup the tab host
         setup();

         try {
             mAllApps = (AllAppsPagedView) findViewById(R.id.all_apps_paged_view);
             if (mAllApps == null) throw new Resources.NotFoundException();
             mBackground = (AllAppsBackground) findViewById(R.id.all_apps_background);
             if (mBackground == null) throw new Resources.NotFoundException();
         } catch (Resources.NotFoundException e) {
             Log.e(TAG, "Can't find necessary layout elements for AllAppsTabbed");
         }

         // share the same AllApps workspace across all the tabs
         TabContentFactory contentFactory = new TabContentFactory() {
             public View createTabContent(String tag) {
                 return mAllApps;
             }
         };

         // Create the tabs and wire them up properly
         AllAppsTabKeyEventListener keyListener = new AllAppsTabKeyEventListener();
         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.all_apps_tab_all));
         addTab(newTabSpec(TAG_ALL).setIndicator(tabView).setContent(contentFactory));

         tabView = (TextView) mInflater.inflate(R.layout.tab_widget_indicator, tabWidget, false);
         tabView.setText(mContext.getString(R.string.all_apps_tab_downloaded));
         addTab(newTabSpec(TAG_DOWNLOADED).setIndicator(tabView).setContent(contentFactory));

         // Setup the key listener to jump between the last tab view and the market icon
         View lastTab = tabWidget.getChildTabViewAt(tabWidget.getTabCount() - 1);
         lastTab.setOnKeyListener(keyListener);
         View shopButton = findViewById(R.id.market_button);
         shopButton.setOnKeyListener(keyListener);

         setOnTabChangedListener(new OnTabChangeListener() {
             public void onTabChanged(String tabId) {
                 // 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 = mAllApps.getAlpha();
                 ValueAnimator alphaAnim = ObjectAnimator.ofFloat(mAllApps, "alpha", alpha, 0.0f).
                         setDuration(duration);
                 alphaAnim.addListener(new AnimatorListenerAdapter() {
                     @Override
                     public void onAnimationEnd(Animator animation) {
                         String tag = getCurrentTabTag();
                         if (tag == TAG_ALL) {
                             mAllApps.setAppFilter(AllAppsPagedView.ALL_APPS_FLAG);
                         } else if (tag == TAG_DOWNLOADED) {
                             mAllApps.setAppFilter(ApplicationInfo.DOWNLOADED_FLAG);
                         }

                         final float alpha = mAllApps.getAlpha();
                         ObjectAnimator.ofFloat(mAllApps, "alpha", alpha, 1.0f).
                                 setDuration(duration).start();
                     }
                 });
                 alphaAnim.start();
             }
         });

         // Set the width of the tab bar properly
         int pageWidth = mAllApps.getPageContentWidth();
         View allAppsTabBar = (View) findViewById(R.id.all_apps_tab_bar);
         if (allAppsTabBar == null) throw new Resources.NotFoundException();
         int tabWidgetPadding = 0;
         final int childCount = tabWidget.getChildCount();
         if (childCount > 0) {
             tabWidgetPadding += tabWidget.getChildAt(0).getPaddingLeft() * 2;
         }
         allAppsTabBar.getLayoutParams().width = pageWidth + tabWidgetPadding;

         // It needs to be INVISIBLE so that it will be measured in the layout.
         // Otherwise the animations is messed up when we show it for the first time.
         setVisibility(INVISIBLE);
     }

     @Override
     public void setup(Launcher launcher, DragController dragController) {
         mLauncher = launcher;
         mAllApps.setup(launcher, dragController);
     }

     @Override
     public void zoom(float zoom, boolean animate) {
         // NOTE: animate parameter is ignored for the TabHost itself
         setVisibility((zoom == 0.0f) ? View.GONE : View.VISIBLE);
         mAllApps.zoom(zoom, animate);
     }

     @Override
     public void setVisibility(int visibility) {
         if (visibility == View.GONE && mFirstLayout) {
             // It needs to be INVISIBLE so that it will be measured in the layout.
             // Otherwise the animations is messed up when we show it for the first time.
             visibility = View.INVISIBLE;
         }
         final boolean isVisible = (visibility == View.VISIBLE);
         super.setVisibility(visibility);
         float zoom = (isVisible ? 1.0f : 0.0f);
         mAllApps.zoom(zoom, false);
     }

     @Override
     public boolean isVisible() {
         return mAllApps.isVisible();
     }

     @Override
     protected void onLayout(boolean changed, int l, int t, int r, int b) {
         mFirstLayout = false;
         super.onLayout(changed, l, t, r, b);
     }

     @Override
     public boolean isAnimating() {
         return (getAnimation() != null);
     }

     @Override
     public void onLauncherTransitionStart(Animator animation) {
         if (animation != null) {
             // Turn on hardware layers for performance
             setLayerType(LAYER_TYPE_HARDWARE, null);
             // Re-enable the rendering of the dimmed background in All Apps for performance reasons
             // if we're fading it in
             if (mLauncher.getWorkspace().getBackgroundAlpha() == 0f) {
                 mLauncher.getWorkspace().disableBackground();
                 mBackground.setVisibility(VISIBLE);
             }
             // 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);
             // To improve the performance of the first time All Apps is run, we initially keep
             // hardware layers in AllAppsPagedView disabled since AllAppsTabbed itself is drawn in a
             // hardware layer, and creating additional hardware layers slows down the animation. We
             // create them here, after the animation is over.
         }
         // Move the rendering of the dimmed background to workspace after the all apps animation
         // is done, so that the background is not rendered *above* the mini workspace screens
         if (mBackground.getVisibility() != GONE) {
             mLauncher.getWorkspace().enableBackground();
             mBackground.setVisibility(GONE);
         }
         mAllApps.allowHardwareLayerCreation();
     }

     @Override
     public void setApps(ArrayList<ApplicationInfo> list) {
         mAllApps.setApps(list);
     }

     @Override
     public void addApps(ArrayList<ApplicationInfo> list) {
         mAllApps.addApps(list);
     }

     @Override
     public void removeApps(ArrayList<ApplicationInfo> list) {
         mAllApps.removeApps(list);
     }

     @Override
     public void updateApps(ArrayList<ApplicationInfo> list) {
         mAllApps.updateApps(list);
     }

     @Override
     public void dumpState() {
         mAllApps.dumpState();
     }

     @Override
     public void surrender() {
         mAllApps.surrender();
     }

     public void reset() {
         mAllApps.reset();
     }

     @Override
     public boolean onTouchEvent(MotionEvent ev) {
         if (ev.getY() > mAllApps.getBottom()) {
             return false;
         }
         return true;
     }

     @Override
     public int getDescendantFocusability() {
         if (getVisibility() != View.VISIBLE) {
             return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
         }
         return super.getDescendantFocusability();
     }
 }
	/*
	* 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.launcher2;

	import com.android.launcher.R;

	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.util.Log;
	import android.view.LayoutInflater;
	import android.view.MotionEvent;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.TabHost;
	import android.widget.TabWidget;
	import android.widget.TextView;

	import java.util.ArrayList;
	import java.util.Random;

	/**
	* Implements a tabbed version of AllApps2D.
	*/
	public class AllAppsTabbed extends TabHost implements AllAppsView, LauncherTransitionable {

	private static final String TAG = "Launcher.AllAppsTabbed";

	private static final String TAG_ALL = "ALL";
	private static final String TAG_DOWNLOADED = "DOWNLOADED";

	private AllAppsPagedView mAllApps;
	private AllAppsBackground mBackground;
	private Launcher mLauncher;
	private Context mContext;
	private final LayoutInflater mInflater;
	private boolean mFirstLayout = true;

	public AllAppsTabbed(Context context, AttributeSet attrs) {
	super(context, attrs);
	mContext = context;
	mInflater = LayoutInflater.from(context);
	}

	@Override
	protected void onFinishInflate() {
	// setup the tab host
	setup();

	try {
	mAllApps = (AllAppsPagedView) findViewById(R.id.all_apps_paged_view);
	if (mAllApps == null) throw new Resources.NotFoundException();
	mBackground = (AllAppsBackground) findViewById(R.id.all_apps_background);
	if (mBackground == null) throw new Resources.NotFoundException();
	} catch (Resources.NotFoundException e) {
	Log.e(TAG, "Can't find necessary layout elements for AllAppsTabbed");
	}

	// share the same AllApps workspace across all the tabs
	TabContentFactory contentFactory = new TabContentFactory() {
	public View createTabContent(String tag) {
	return mAllApps;
	}
	};

	// Create the tabs and wire them up properly
	AllAppsTabKeyEventListener keyListener = new AllAppsTabKeyEventListener();
	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.all_apps_tab_all));
	addTab(newTabSpec(TAG_ALL).setIndicator(tabView).setContent(contentFactory));

	tabView = (TextView) mInflater.inflate(R.layout.tab_widget_indicator, tabWidget, false);
	tabView.setText(mContext.getString(R.string.all_apps_tab_downloaded));
	addTab(newTabSpec(TAG_DOWNLOADED).setIndicator(tabView).setContent(contentFactory));

	// Setup the key listener to jump between the last tab view and the market icon
	View lastTab = tabWidget.getChildTabViewAt(tabWidget.getTabCount() - 1);
	lastTab.setOnKeyListener(keyListener);
	View shopButton = findViewById(R.id.market_button);
	shopButton.setOnKeyListener(keyListener);

	setOnTabChangedListener(new OnTabChangeListener() {
	public void onTabChanged(String tabId) {
	// 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 = mAllApps.getAlpha();
	ValueAnimator alphaAnim = ObjectAnimator.ofFloat(mAllApps, "alpha", alpha, 0.0f).
	setDuration(duration);
	alphaAnim.addListener(new AnimatorListenerAdapter() {
	@Override
	public void onAnimationEnd(Animator animation) {
	String tag = getCurrentTabTag();
	if (tag == TAG_ALL) {
	mAllApps.setAppFilter(AllAppsPagedView.ALL_APPS_FLAG);
	} else if (tag == TAG_DOWNLOADED) {
	mAllApps.setAppFilter(ApplicationInfo.DOWNLOADED_FLAG);
	}

	final float alpha = mAllApps.getAlpha();
	ObjectAnimator.ofFloat(mAllApps, "alpha", alpha, 1.0f).
	setDuration(duration).start();
	}
	});
	alphaAnim.start();
	}
	});

	// Set the width of the tab bar properly
	int pageWidth = mAllApps.getPageContentWidth();
	View allAppsTabBar = (View) findViewById(R.id.all_apps_tab_bar);
	if (allAppsTabBar == null) throw new Resources.NotFoundException();
	int tabWidgetPadding = 0;
	final int childCount = tabWidget.getChildCount();
	if (childCount > 0) {
	tabWidgetPadding += tabWidget.getChildAt(0).getPaddingLeft() * 2;
	}
	allAppsTabBar.getLayoutParams().width = pageWidth + tabWidgetPadding;

	// It needs to be INVISIBLE so that it will be measured in the layout.
	// Otherwise the animations is messed up when we show it for the first time.
	setVisibility(INVISIBLE);
	}

	@Override
	public void setup(Launcher launcher, DragController dragController) {
	mLauncher = launcher;
	mAllApps.setup(launcher, dragController);
	}

	@Override
	public void zoom(float zoom, boolean animate) {
	// NOTE: animate parameter is ignored for the TabHost itself
	setVisibility((zoom == 0.0f) ? View.GONE : View.VISIBLE);
	mAllApps.zoom(zoom, animate);
	}

	@Override
	public void setVisibility(int visibility) {
	if (visibility == View.GONE && mFirstLayout) {
	// It needs to be INVISIBLE so that it will be measured in the layout.
	// Otherwise the animations is messed up when we show it for the first time.
	visibility = View.INVISIBLE;
	}
	final boolean isVisible = (visibility == View.VISIBLE);
	super.setVisibility(visibility);
	float zoom = (isVisible ? 1.0f : 0.0f);
	mAllApps.zoom(zoom, false);
	}

	@Override
	public boolean isVisible() {
	return mAllApps.isVisible();
	}

	@Override
	protected void onLayout(boolean changed, int l, int t, int r, int b) {
	mFirstLayout = false;
	super.onLayout(changed, l, t, r, b);
	}

	@Override
	public boolean isAnimating() {
	return (getAnimation() != null);
	}

	@Override
	public void onLauncherTransitionStart(Animator animation) {
	if (animation != null) {
	// Turn on hardware layers for performance
	setLayerType(LAYER_TYPE_HARDWARE, null);
	// Re-enable the rendering of the dimmed background in All Apps for performance reasons
	// if we're fading it in
	if (mLauncher.getWorkspace().getBackgroundAlpha() == 0f) {
	mLauncher.getWorkspace().disableBackground();
	mBackground.setVisibility(VISIBLE);
	}
	// 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);
	// To improve the performance of the first time All Apps is run, we initially keep
	// hardware layers in AllAppsPagedView disabled since AllAppsTabbed itself is drawn in a
	// hardware layer, and creating additional hardware layers slows down the animation. We
	// create them here, after the animation is over.
	}
	// Move the rendering of the dimmed background to workspace after the all apps animation
	// is done, so that the background is not rendered above the mini workspace screens
	if (mBackground.getVisibility() != GONE) {
	mLauncher.getWorkspace().enableBackground();
	mBackground.setVisibility(GONE);
	}
	mAllApps.allowHardwareLayerCreation();
	}

	@Override
	public void setApps(ArrayList<ApplicationInfo> list) {
	mAllApps.setApps(list);
	}

	@Override
	public void addApps(ArrayList<ApplicationInfo> list) {
	mAllApps.addApps(list);
	}

	@Override
	public void removeApps(ArrayList<ApplicationInfo> list) {
	mAllApps.removeApps(list);
	}

	@Override
	public void updateApps(ArrayList<ApplicationInfo> list) {
	mAllApps.updateApps(list);
	}

	@Override
	public void dumpState() {
	mAllApps.dumpState();
	}

	@Override
	public void surrender() {
	mAllApps.surrender();
	}

	public void reset() {
	mAllApps.reset();
	}

	@Override
	public boolean onTouchEvent(MotionEvent ev) {
	if (ev.getY() > mAllApps.getBottom()) {
	return false;
	}
	return true;
	}

	@Override
	public int getDescendantFocusability() {
	if (getVisibility() != View.VISIBLE) {
	return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
	}
	return super.getDescendantFocusability();
	}
	}