src/com/android/browser/TitleBar.java - android_packages_apps_Gello - 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.browser;

 import android.animation.Animator;
 import android.animation.Animator.AnimatorListener;
 import android.animation.ObjectAnimator;
 import android.content.Context;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Rect;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewStub;
 import android.view.ViewTreeObserver;
 import android.view.accessibility.AccessibilityManager;
 import android.view.animation.DecelerateInterpolator;
 import org.codeaurora.swe.WebView;

 import android.widget.FrameLayout;

 /**
  * Base class for a title bar used by the browser.
  */
 public class TitleBar extends FrameLayout implements ViewTreeObserver.OnPreDrawListener {

     private static final int PROGRESS_MAX = 100;
     private static final float ANIM_TITLEBAR_DECELERATE = 2.5f;

     private UiController mUiController;
     private BaseUi mBaseUi;
     private FrameLayout mContentView;
     private PageProgressView mProgress;
     private AccessibilityManager mAccessibilityManager;

     private NavigationBarBase mNavBar;
     private SnapshotBar mSnapshotBar;

     //state
     private boolean mShowing;
     private boolean mInLoad;
     private boolean mSkipTitleBarAnimations;
     private Animator mTitleBarAnimator;
     private boolean mIsFixedTitleBar;
     private float mCurrentTranslationY;
     private boolean mUpdateTranslationY = false;

     public TitleBar(Context context, UiController controller, BaseUi ui,
             FrameLayout contentView) {
         super(context, null);
         mUiController = controller;
         mBaseUi = ui;
         mContentView = contentView;
         mAccessibilityManager = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
         initLayout(context);
         setFixedTitleBar();
     }

     private void initLayout(Context context) {
         LayoutInflater factory = LayoutInflater.from(context);
         factory.inflate(R.layout.title_bar, this);
         mProgress = (PageProgressView) findViewById(R.id.progress);
         mNavBar = (NavigationBarBase) findViewById(R.id.taburlbar);
         mNavBar.setTitleBar(this);
     }

     private void inflateSnapshotBar() {
         if (mSnapshotBar != null) {
             return;
         }

         ViewStub stub = (ViewStub) findViewById(R.id.snapshotbar_stub);
         mSnapshotBar = (SnapshotBar) stub.inflate();
         mSnapshotBar.setTitleBar(this);
     }

     @Override
     protected void onConfigurationChanged(Configuration config) {
         super.onConfigurationChanged(config);
         setFixedTitleBar();
     }

     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
         mBaseUi.setContentViewMarginTop(0);
     }

     @Override
     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
         super.onLayout(changed, left, top, right, bottom);

         mCurrentTranslationY = this.getTranslationY();
         if (mCurrentTranslationY < 0) {
             mUpdateTranslationY = true;
             this.setTranslationY(0);

             final ViewTreeObserver observer = this.getViewTreeObserver();
             observer.addOnPreDrawListener(this);
         }
     }

     @Override
     public boolean onPreDraw() {
         if (mUpdateTranslationY) {
             this.setTranslationY(mCurrentTranslationY);
             mUpdateTranslationY = false;
         }
         final ViewTreeObserver observer = this.getViewTreeObserver();
         observer.removeOnPreDrawListener(this);
         return true;
     }

     private void setFixedTitleBar() {
         boolean isFixed = !getContext().getResources().getBoolean(R.bool.hide_title);

         isFixed |= mAccessibilityManager.isEnabled() &&
             mAccessibilityManager.isTouchExplorationEnabled();
         // If getParent() returns null, we are initializing
         ViewGroup parent = (ViewGroup)getParent();
         if (mIsFixedTitleBar == isFixed && parent != null) return;
         mIsFixedTitleBar = isFixed;
         setSkipTitleBarAnimations(true);
         show();
         setSkipTitleBarAnimations(false);
         if (parent != null) {
             parent.removeView(this);
         }
         mContentView.addView(this, makeLayoutParams());
         mBaseUi.setContentViewMarginTop(0);
     }

     public BaseUi getUi() {
         return mBaseUi;
     }

     public UiController getUiController() {
         return mUiController;
     }

     void setShowProgressOnly(boolean progress) {
         if (progress && !wantsToBeVisible()) {
             mNavBar.setVisibility(View.GONE);
         } else {
             mNavBar.setVisibility(View.VISIBLE);
         }
     }

     void setSkipTitleBarAnimations(boolean skip) {
         mSkipTitleBarAnimations = skip;
     }

     void setupTitleBarAnimator(Animator animator) {
         Resources res = getContext().getResources();
         int duration = res.getInteger(R.integer.titlebar_animation_duration);
         animator.setInterpolator(new DecelerateInterpolator(
                 ANIM_TITLEBAR_DECELERATE));
         animator.setDuration(duration);
     }

     //Disable stock autohide behavior in favor of top controls
     private static final  boolean bOldStyleAutoHideDisabled = true;
     void show() {
         cancelTitleBarAnimation(false);
         if (mSkipTitleBarAnimations) {
             this.setVisibility(View.VISIBLE);
             this.setTranslationY(0);
             // reaffirm top-controls
             if (isFixed() || isInLoad())
                 showTopControls(false);
             else
                 enableTopControls(true);
         } else if (!bOldStyleAutoHideDisabled) {
             int visibleHeight = getVisibleTitleHeight();
             float startPos = (-getEmbeddedHeight() + visibleHeight);
             if (getTranslationY() != 0) {
                 startPos = Math.max(startPos, getTranslationY());
             }
             mTitleBarAnimator = ObjectAnimator.ofFloat(this,
                     "translationY",
                     startPos, 0);
             setupTitleBarAnimator(mTitleBarAnimator);
             mTitleBarAnimator.start();
         }

         mShowing = true;
     }

     void hide() {
         if (mIsFixedTitleBar || bOldStyleAutoHideDisabled) return;
         if (!mSkipTitleBarAnimations) {
             cancelTitleBarAnimation(false);
             int visibleHeight = getVisibleTitleHeight();
             mTitleBarAnimator = ObjectAnimator.ofFloat(this,
                     "translationY", getTranslationY(),
                     (-getEmbeddedHeight() + visibleHeight));
             mTitleBarAnimator.addListener(mHideTileBarAnimatorListener);
             setupTitleBarAnimator(mTitleBarAnimator);
             mTitleBarAnimator.start();
         } else {
             onScrollChanged();
         }
         mShowing = false;
     }

     boolean isShowing() {
         return mShowing;
     }

     void cancelTitleBarAnimation(boolean reset) {
         if (mTitleBarAnimator != null) {
             mTitleBarAnimator.cancel();
             mTitleBarAnimator = null;
         }
         if (reset) {
             setTranslationY(0);
         }
     }

     private AnimatorListener mHideTileBarAnimatorListener = new AnimatorListener() {

         @Override
         public void onAnimationStart(Animator animation) {
         }

         @Override
         public void onAnimationRepeat(Animator animation) {
         }

         @Override
         public void onAnimationEnd(Animator animation) {
             // update position
             onScrollChanged();
         }

         @Override
         public void onAnimationCancel(Animator animation) {
         }
     };

     private int getVisibleTitleHeight() {
         Tab tab = mBaseUi.getActiveTab();
         WebView webview = tab != null ? tab.getWebView() : null;
         return webview != null ? webview.getVisibleTitleHeight() : 0;
     }

     protected void hideTopControls(boolean animate) {
         Tab tab = mBaseUi.getActiveTab();
         WebView view = tab != null ? tab.getWebView() : null;
         if (view != null)
             view.updateTopControls(true, false, animate);
     }

     protected void showTopControls(boolean animate) {
         Tab tab = mBaseUi.getActiveTab();
         WebView view = tab != null ? tab.getWebView() : null;
         if (view != null)
             view.updateTopControls(false, true, animate);
     }

     protected void enableTopControls(boolean animate) {
         Tab tab = mBaseUi.getActiveTab();
         WebView view = tab != null ? tab.getWebView() : null;
         if (view != null)
             view.updateTopControls(true, true, animate);
     }


     /**
      * Update the progress, from 0 to 100.
      */
     public void setProgress(int newProgress) {
         if (newProgress >= PROGRESS_MAX) {
             mProgress.setProgress(PageProgressView.MAX_PROGRESS);
             mProgress.setVisibility(View.GONE);
             mInLoad = false;
             mNavBar.onProgressStopped();
             // check if needs to be hidden
             if (!isEditingUrl() && !wantsToBeVisible()) {
                 mBaseUi.showTitleBarForDuration();
             }

             //onPageFinished
             showTopControls(false);
             if(!isFixed())
                 enableTopControls(true);

         } else {
             if (!mInLoad) {
                 mProgress.setVisibility(View.VISIBLE);
                 mInLoad = true;
                 mNavBar.onProgressStarted();
                 mProgress.onProgressStarted();
                 //onPageStarted
             }
             mProgress.setProgress(newProgress * PageProgressView.MAX_PROGRESS
                     / PROGRESS_MAX);
             if (!mShowing) {
                 show();
             }
             showTopControls(false);
         }
     }

     public int getEmbeddedHeight() {
         if (mIsFixedTitleBar) return 0;
         return calculateEmbeddedHeight();
     }

      public boolean isFixed() {
         return mIsFixedTitleBar;
     }

     int calculateEmbeddedHeight() {
         int height = mNavBar.getHeight();
         return height;
     }

     public boolean wantsToBeVisible() {
         return (mSnapshotBar != null && mSnapshotBar.getVisibility() == View.VISIBLE
                     && mSnapshotBar.isAnimating());
     }

     public boolean isEditingUrl() {
         return mNavBar.isEditingUrl();
     }

     public WebView getCurrentWebView() {
         Tab t = mBaseUi.getActiveTab();
         if (t != null) {
             return t.getWebView();
         } else {
             return null;
         }
     }

     public PageProgressView getProgressView() {
         return mProgress;
     }

     public NavigationBarBase getNavigationBar() {
         return mNavBar;
     }

     public boolean isInLoad() {
         return mInLoad;
     }

     private ViewGroup.LayoutParams makeLayoutParams() {
         return new FrameLayout.LayoutParams(LayoutParams.MATCH_PARENT,
                 LayoutParams.WRAP_CONTENT);
     }

     @Override
     public boolean requestFocus(int direction, Rect previouslyFocusedRect) {
         return mBaseUi.isCustomViewShowing() ? false :
             super.requestFocus(direction, previouslyFocusedRect);
     }

     @Override
     public View focusSearch(View focused, int dir) {
         WebView web = getCurrentWebView();
         if (FOCUS_DOWN == dir && hasFocus() && web != null
                 && web.hasFocusable() && web.getParent() != null) {
             return web;
         }
         return super.focusSearch(focused, dir);
     }

     public void onTabDataChanged(Tab tab) {
         if (mSnapshotBar != null) {
             mSnapshotBar.onTabDataChanged(tab);
         }

         if (tab.isSnapshot()) {
             inflateSnapshotBar();
             mSnapshotBar.setVisibility(VISIBLE);
             mNavBar.setVisibility(GONE);
         } else {
             if (mSnapshotBar != null) {
                 mSnapshotBar.setVisibility(GONE);
             }
             mNavBar.setVisibility(VISIBLE);
         }
     }

     public void onScrollChanged() {
         if (!mShowing && !mIsFixedTitleBar) {
             setTranslationY(getVisibleTitleHeight() - getEmbeddedHeight());
         }
     }

     public void onResume() {
         setFixedTitleBar();
     }

 }
	/*
	* 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.browser;

	import android.animation.Animator;
	import android.animation.Animator.AnimatorListener;
	import android.animation.ObjectAnimator;
	import android.content.Context;
	import android.content.res.Configuration;
	import android.content.res.Resources;
	import android.graphics.Rect;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.view.ViewStub;
	import android.view.ViewTreeObserver;
	import android.view.accessibility.AccessibilityManager;
	import android.view.animation.DecelerateInterpolator;
	import org.codeaurora.swe.WebView;

	import android.widget.FrameLayout;

	/**
	* Base class for a title bar used by the browser.
	*/
	public class TitleBar extends FrameLayout implements ViewTreeObserver.OnPreDrawListener {

	private static final int PROGRESS_MAX = 100;
	private static final float ANIM_TITLEBAR_DECELERATE = 2.5f;

	private UiController mUiController;
	private BaseUi mBaseUi;
	private FrameLayout mContentView;
	private PageProgressView mProgress;
	private AccessibilityManager mAccessibilityManager;

	private NavigationBarBase mNavBar;
	private SnapshotBar mSnapshotBar;

	//state
	private boolean mShowing;
	private boolean mInLoad;
	private boolean mSkipTitleBarAnimations;
	private Animator mTitleBarAnimator;
	private boolean mIsFixedTitleBar;
	private float mCurrentTranslationY;
	private boolean mUpdateTranslationY = false;

	public TitleBar(Context context, UiController controller, BaseUi ui,
	FrameLayout contentView) {
	super(context, null);
	mUiController = controller;
	mBaseUi = ui;
	mContentView = contentView;
	mAccessibilityManager = (AccessibilityManager) context.getSystemService(Context.ACCESSIBILITY_SERVICE);
	initLayout(context);
	setFixedTitleBar();
	}

	private void initLayout(Context context) {
	LayoutInflater factory = LayoutInflater.from(context);
	factory.inflate(R.layout.title_bar, this);
	mProgress = (PageProgressView) findViewById(R.id.progress);
	mNavBar = (NavigationBarBase) findViewById(R.id.taburlbar);
	mNavBar.setTitleBar(this);
	}

	private void inflateSnapshotBar() {
	if (mSnapshotBar != null) {
	return;
	}

	ViewStub stub = (ViewStub) findViewById(R.id.snapshotbar_stub);
	mSnapshotBar = (SnapshotBar) stub.inflate();
	mSnapshotBar.setTitleBar(this);
	}

	@Override
	protected void onConfigurationChanged(Configuration config) {
	super.onConfigurationChanged(config);
	setFixedTitleBar();
	}

	@Override
	protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
	super.onMeasure(widthMeasureSpec, heightMeasureSpec);
	mBaseUi.setContentViewMarginTop(0);
	}

	@Override
	protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
	super.onLayout(changed, left, top, right, bottom);

	mCurrentTranslationY = this.getTranslationY();
	if (mCurrentTranslationY < 0) {
	mUpdateTranslationY = true;
	this.setTranslationY(0);

	final ViewTreeObserver observer = this.getViewTreeObserver();
	observer.addOnPreDrawListener(this);
	}
	}

	@Override
	public boolean onPreDraw() {
	if (mUpdateTranslationY) {
	this.setTranslationY(mCurrentTranslationY);
	mUpdateTranslationY = false;
	}
	final ViewTreeObserver observer = this.getViewTreeObserver();
	observer.removeOnPreDrawListener(this);
	return true;
	}

	private void setFixedTitleBar() {
	boolean isFixed = !getContext().getResources().getBoolean(R.bool.hide_title);

	isFixed \|= mAccessibilityManager.isEnabled() &&
	mAccessibilityManager.isTouchExplorationEnabled();
	// If getParent() returns null, we are initializing
	ViewGroup parent = (ViewGroup)getParent();
	if (mIsFixedTitleBar == isFixed && parent != null) return;
	mIsFixedTitleBar = isFixed;
	setSkipTitleBarAnimations(true);
	show();
	setSkipTitleBarAnimations(false);
	if (parent != null) {
	parent.removeView(this);
	}
	mContentView.addView(this, makeLayoutParams());
	mBaseUi.setContentViewMarginTop(0);
	}

	public BaseUi getUi() {
	return mBaseUi;
	}

	public UiController getUiController() {
	return mUiController;
	}

	void setShowProgressOnly(boolean progress) {
	if (progress && !wantsToBeVisible()) {
	mNavBar.setVisibility(View.GONE);
	} else {
	mNavBar.setVisibility(View.VISIBLE);
	}
	}

	void setSkipTitleBarAnimations(boolean skip) {
	mSkipTitleBarAnimations = skip;
	}

	void setupTitleBarAnimator(Animator animator) {
	Resources res = getContext().getResources();
	int duration = res.getInteger(R.integer.titlebar_animation_duration);
	animator.setInterpolator(new DecelerateInterpolator(
	ANIM_TITLEBAR_DECELERATE));
	animator.setDuration(duration);
	}

	//Disable stock autohide behavior in favor of top controls
	private static final boolean bOldStyleAutoHideDisabled = true;
	void show() {
	cancelTitleBarAnimation(false);
	if (mSkipTitleBarAnimations) {
	this.setVisibility(View.VISIBLE);
	this.setTranslationY(0);
	// reaffirm top-controls
	if (isFixed() \|\| isInLoad())
	showTopControls(false);
	else
	enableTopControls(true);
	} else if (!bOldStyleAutoHideDisabled) {
	int visibleHeight = getVisibleTitleHeight();
	float startPos = (-getEmbeddedHeight() + visibleHeight);
	if (getTranslationY() != 0) {
	startPos = Math.max(startPos, getTranslationY());
	}
	mTitleBarAnimator = ObjectAnimator.ofFloat(this,
	"translationY",
	startPos, 0);
	setupTitleBarAnimator(mTitleBarAnimator);
	mTitleBarAnimator.start();
	}

	mShowing = true;
	}

	void hide() {
	if (mIsFixedTitleBar \|\| bOldStyleAutoHideDisabled) return;
	if (!mSkipTitleBarAnimations) {
	cancelTitleBarAnimation(false);
	int visibleHeight = getVisibleTitleHeight();
	mTitleBarAnimator = ObjectAnimator.ofFloat(this,
	"translationY", getTranslationY(),
	(-getEmbeddedHeight() + visibleHeight));
	mTitleBarAnimator.addListener(mHideTileBarAnimatorListener);
	setupTitleBarAnimator(mTitleBarAnimator);
	mTitleBarAnimator.start();
	} else {
	onScrollChanged();
	}
	mShowing = false;
	}

	boolean isShowing() {
	return mShowing;
	}

	void cancelTitleBarAnimation(boolean reset) {
	if (mTitleBarAnimator != null) {
	mTitleBarAnimator.cancel();
	mTitleBarAnimator = null;
	}
	if (reset) {
	setTranslationY(0);
	}
	}

	private AnimatorListener mHideTileBarAnimatorListener = new AnimatorListener() {

	@Override
	public void onAnimationStart(Animator animation) {
	}

	@Override
	public void onAnimationRepeat(Animator animation) {
	}

	@Override
	public void onAnimationEnd(Animator animation) {
	// update position
	onScrollChanged();
	}

	@Override
	public void onAnimationCancel(Animator animation) {
	}
	};

	private int getVisibleTitleHeight() {
	Tab tab = mBaseUi.getActiveTab();
	WebView webview = tab != null ? tab.getWebView() : null;
	return webview != null ? webview.getVisibleTitleHeight() : 0;
	}

	protected void hideTopControls(boolean animate) {
	Tab tab = mBaseUi.getActiveTab();
	WebView view = tab != null ? tab.getWebView() : null;
	if (view != null)
	view.updateTopControls(true, false, animate);
	}

	protected void showTopControls(boolean animate) {
	Tab tab = mBaseUi.getActiveTab();
	WebView view = tab != null ? tab.getWebView() : null;
	if (view != null)
	view.updateTopControls(false, true, animate);
	}

	protected void enableTopControls(boolean animate) {
	Tab tab = mBaseUi.getActiveTab();
	WebView view = tab != null ? tab.getWebView() : null;
	if (view != null)
	view.updateTopControls(true, true, animate);
	}


	/**
	* Update the progress, from 0 to 100.
	*/
	public void setProgress(int newProgress) {
	if (newProgress >= PROGRESS_MAX) {
	mProgress.setProgress(PageProgressView.MAX_PROGRESS);
	mProgress.setVisibility(View.GONE);
	mInLoad = false;
	mNavBar.onProgressStopped();
	// check if needs to be hidden
	if (!isEditingUrl() && !wantsToBeVisible()) {
	mBaseUi.showTitleBarForDuration();
	}

	//onPageFinished
	showTopControls(false);
	if(!isFixed())
	enableTopControls(true);

	} else {
	if (!mInLoad) {
	mProgress.setVisibility(View.VISIBLE);
	mInLoad = true;
	mNavBar.onProgressStarted();
	mProgress.onProgressStarted();
	//onPageStarted
	}
	mProgress.setProgress(newProgress * PageProgressView.MAX_PROGRESS
	/ PROGRESS_MAX);
	if (!mShowing) {
	show();
	}
	showTopControls(false);
	}
	}

	public int getEmbeddedHeight() {
	if (mIsFixedTitleBar) return 0;
	return calculateEmbeddedHeight();
	}

	public boolean isFixed() {
	return mIsFixedTitleBar;
	}

	int calculateEmbeddedHeight() {
	int height = mNavBar.getHeight();
	return height;
	}

	public boolean wantsToBeVisible() {
	return (mSnapshotBar != null && mSnapshotBar.getVisibility() == View.VISIBLE
	&& mSnapshotBar.isAnimating());
	}

	public boolean isEditingUrl() {
	return mNavBar.isEditingUrl();
	}

	public WebView getCurrentWebView() {
	Tab t = mBaseUi.getActiveTab();
	if (t != null) {
	return t.getWebView();
	} else {
	return null;
	}
	}

	public PageProgressView getProgressView() {
	return mProgress;
	}

	public NavigationBarBase getNavigationBar() {
	return mNavBar;
	}

	public boolean isInLoad() {
	return mInLoad;
	}

	private ViewGroup.LayoutParams makeLayoutParams() {
	return new FrameLayout.LayoutParams(LayoutParams.MATCH_PARENT,
	LayoutParams.WRAP_CONTENT);
	}

	@Override
	public boolean requestFocus(int direction, Rect previouslyFocusedRect) {
	return mBaseUi.isCustomViewShowing() ? false :
	super.requestFocus(direction, previouslyFocusedRect);
	}

	@Override
	public View focusSearch(View focused, int dir) {
	WebView web = getCurrentWebView();
	if (FOCUS_DOWN == dir && hasFocus() && web != null
	&& web.hasFocusable() && web.getParent() != null) {
	return web;
	}
	return super.focusSearch(focused, dir);
	}

	public void onTabDataChanged(Tab tab) {
	if (mSnapshotBar != null) {
	mSnapshotBar.onTabDataChanged(tab);
	}

	if (tab.isSnapshot()) {
	inflateSnapshotBar();
	mSnapshotBar.setVisibility(VISIBLE);
	mNavBar.setVisibility(GONE);
	} else {
	if (mSnapshotBar != null) {
	mSnapshotBar.setVisibility(GONE);
	}
	mNavBar.setVisibility(VISIBLE);
	}
	}

	public void onScrollChanged() {
	if (!mShowing && !mIsFixedTitleBar) {
	setTranslationY(getVisibleTitleHeight() - getEmbeddedHeight());
	}
	}

	public void onResume() {
	setFixedTitleBar();
	}

	}