v7/appcompat/src/android/support/v7/app/AppCompatDelegateImplBase.java - platform/frameworks/support - Git at Google

 /*
  * Copyright (C) 2013 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 android.support.v7.app;

 import android.app.Activity;
 import android.content.Context;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.graphics.drawable.Drawable;
 import android.os.Build;
 import android.os.Bundle;
 import android.support.v7.appcompat.R;
 import android.support.v7.view.ActionMode;
 import android.support.v7.view.SupportMenuInflater;
 import android.support.v7.view.WindowCallbackWrapper;
 import android.support.v7.view.menu.MenuBuilder;
 import android.support.v7.widget.AppCompatDrawableManager;
 import android.support.v7.widget.TintTypedArray;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.View;
 import android.view.Window;

 abstract class AppCompatDelegateImplBase extends AppCompatDelegate {

     static final boolean DEBUG = false;

     private static boolean sInstalledExceptionHandler;
     private static final boolean SHOULD_INSTALL_EXCEPTION_HANDLER = Build.VERSION.SDK_INT < 21;

     static final String EXCEPTION_HANDLER_MESSAGE_SUFFIX= ". If the resource you are"
             + " trying to use is a vector resource, you may be referencing it in an unsupported"
             + " way. See AppCompatDelegate.setCompatVectorFromResourcesEnabled() for more info.";

     static {
         if (SHOULD_INSTALL_EXCEPTION_HANDLER && !sInstalledExceptionHandler) {
             final Thread.UncaughtExceptionHandler defHandler
                     = Thread.getDefaultUncaughtExceptionHandler();

             Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
                 @Override
                 public void uncaughtException(Thread thread, final Throwable thowable) {
                     if (shouldWrapException(thowable)) {
                         // Now wrap the throwable, but append some extra information to the message
                         final Throwable wrapped = new Resources.NotFoundException(
                                 thowable.getMessage() + EXCEPTION_HANDLER_MESSAGE_SUFFIX);
                         wrapped.initCause(thowable.getCause());
                         wrapped.setStackTrace(thowable.getStackTrace());
                         defHandler.uncaughtException(thread, wrapped);
                     } else {
                         defHandler.uncaughtException(thread, thowable);
                     }
                 }

                 private boolean shouldWrapException(Throwable throwable) {
                     if (throwable instanceof Resources.NotFoundException) {
                         final String message = throwable.getMessage();
                         return message != null && (message.contains("drawable")
                                 || message.contains("Drawable"));
                     }
                     return false;
                 }
             });

             sInstalledExceptionHandler = true;
         }
     }

     private static final int[] sWindowBackgroundStyleable = {android.R.attr.windowBackground};

     final Context mContext;
     final Window mWindow;
     final Window.Callback mOriginalWindowCallback;
     final Window.Callback mAppCompatWindowCallback;
     final AppCompatCallback mAppCompatCallback;

     ActionBar mActionBar;
     MenuInflater mMenuInflater;

     // true if this activity has an action bar.
     boolean mHasActionBar;
     // true if this activity's action bar overlays other activity content.
     boolean mOverlayActionBar;
     // true if this any action modes should overlay the activity content
     boolean mOverlayActionMode;
     // true if this activity is floating (e.g. Dialog)
     boolean mIsFloating;
     // true if this activity has no title
     boolean mWindowNoTitle;

     private CharSequence mTitle;

     private boolean mIsStarted;
     private boolean mIsDestroyed;

     AppCompatDelegateImplBase(Context context, Window window, AppCompatCallback callback) {
         mContext = context;
         mWindow = window;
         mAppCompatCallback = callback;

         mOriginalWindowCallback = mWindow.getCallback();
         if (mOriginalWindowCallback instanceof AppCompatWindowCallbackBase) {
             throw new IllegalStateException(
                     "AppCompat has already installed itself into the Window");
         }
         mAppCompatWindowCallback = wrapWindowCallback(mOriginalWindowCallback);
         // Now install the new callback
         mWindow.setCallback(mAppCompatWindowCallback);

         final TintTypedArray a = TintTypedArray.obtainStyledAttributes(
                 context, null, sWindowBackgroundStyleable);
         final Drawable winBg = a.getDrawableIfKnown(0);
         if (winBg != null) {
             mWindow.setBackgroundDrawable(winBg);
         }
         a.recycle();
     }

     abstract void initWindowDecorActionBar();

     Window.Callback wrapWindowCallback(Window.Callback callback) {
         return new AppCompatWindowCallbackBase(callback);
     }

     @Override
     public ActionBar getSupportActionBar() {
         // The Action Bar should be lazily created as hasActionBar
         // could change after onCreate
         initWindowDecorActionBar();
         return mActionBar;
     }

     final ActionBar peekSupportActionBar() {
         return mActionBar;
     }

     @Override
     public MenuInflater getMenuInflater() {
         // Make sure that action views can get an appropriate theme.
         if (mMenuInflater == null) {
             initWindowDecorActionBar();
             mMenuInflater = new SupportMenuInflater(
                     mActionBar != null ? mActionBar.getThemedContext() : mContext);
         }
         return mMenuInflater;
     }

     // Methods used to create and respond to options menu
     abstract void onPanelClosed(int featureId, Menu menu);

     abstract boolean onMenuOpened(int featureId, Menu menu);

     abstract boolean dispatchKeyEvent(KeyEvent event);

     abstract boolean onKeyShortcut(int keyCode, KeyEvent event);

     @Override
     public void setLocalNightMode(@NightMode int mode) {
         // no-op
     }

     @Override
     public final ActionBarDrawerToggle.Delegate getDrawerToggleDelegate() {
         return new ActionBarDrawableToggleImpl();
     }

     final Context getActionBarThemedContext() {
         Context context = null;

         // If we have an action bar, let it return a themed context
         ActionBar ab = getSupportActionBar();
         if (ab != null) {
             context = ab.getThemedContext();
         }

         if (context == null) {
             context = mContext;
         }
         return context;
     }

     private class ActionBarDrawableToggleImpl implements ActionBarDrawerToggle.Delegate {
         ActionBarDrawableToggleImpl() {
         }

         @Override
         public Drawable getThemeUpIndicator() {
             final TintTypedArray a = TintTypedArray.obtainStyledAttributes(
                     getActionBarThemedContext(), null, new int[]{ R.attr.homeAsUpIndicator });
             final Drawable result = a.getDrawable(0);
             a.recycle();
             return result;
         }

         @Override
         public Context getActionBarThemedContext() {
             return AppCompatDelegateImplBase.this.getActionBarThemedContext();
         }

         @Override
         public boolean isNavigationVisible() {
             final ActionBar ab = getSupportActionBar();
             return ab != null && (ab.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0;
         }

         @Override
         public void setActionBarUpIndicator(Drawable upDrawable, int contentDescRes) {
             ActionBar ab = getSupportActionBar();
             if (ab != null) {
                 ab.setHomeAsUpIndicator(upDrawable);
                 ab.setHomeActionContentDescription(contentDescRes);
             }
         }

         @Override
         public void setActionBarDescription(int contentDescRes) {
             ActionBar ab = getSupportActionBar();
             if (ab != null) {
                 ab.setHomeActionContentDescription(contentDescRes);
             }
         }
     }

     abstract ActionMode startSupportActionModeFromWindow(ActionMode.Callback callback);

     @Override
     public void onStart() {
         mIsStarted = true;
     }

     @Override
     public void onStop() {
         mIsStarted = false;
     }

     @Override
     public void onDestroy() {
         mIsDestroyed = true;
     }

     @Override
     public void setHandleNativeActionModesEnabled(boolean enabled) {
         // no-op pre-v14
     }

     @Override
     public boolean isHandleNativeActionModesEnabled() {
         // Always false pre-v14
         return false;
     }

     @Override
     public boolean applyDayNight() {
         // no-op on v7
         return false;
     }

     final boolean isDestroyed() {
         return mIsDestroyed;
     }

     final boolean isStarted() {
         return mIsStarted;
     }

     final Window.Callback getWindowCallback() {
         return mWindow.getCallback();
     }

     @Override
     public final void setTitle(CharSequence title) {
         mTitle = title;
         onTitleChanged(title);
     }

     @Override
     public void onSaveInstanceState(Bundle outState) {
         // no-op
     }

     abstract void onTitleChanged(CharSequence title);

     final CharSequence getTitle() {
         // If the original window callback is an Activity, we'll use it's title
         if (mOriginalWindowCallback instanceof Activity) {
             return ((Activity) mOriginalWindowCallback).getTitle();
         }
         // Else, we'll return the title we have recorded ourselves
         return mTitle;
     }

     class AppCompatWindowCallbackBase extends WindowCallbackWrapper {
         AppCompatWindowCallbackBase(Window.Callback callback) {
             super(callback);
         }

         @Override
         public boolean dispatchKeyEvent(KeyEvent event) {
             return AppCompatDelegateImplBase.this.dispatchKeyEvent(event)
                     || super.dispatchKeyEvent(event);
         }

         @Override
         public boolean dispatchKeyShortcutEvent(KeyEvent event) {
             return super.dispatchKeyShortcutEvent(event)
                     || AppCompatDelegateImplBase.this.onKeyShortcut(event.getKeyCode(), event);
         }

         @Override
         public boolean onCreatePanelMenu(int featureId, Menu menu) {
             if (featureId == Window.FEATURE_OPTIONS_PANEL && !(menu instanceof MenuBuilder)) {
                 // If this is an options menu but it's not an AppCompat menu, we eat the event
                 // and return false
                 return false;
             }
             return super.onCreatePanelMenu(featureId, menu);
         }

         @Override
         public void onContentChanged() {
             // We purposely do not propagate this call as this is called when we install
             // our sub-decor rather than the user's content
         }

         @Override
         public boolean onPreparePanel(int featureId, View view, Menu menu) {
             final MenuBuilder mb = menu instanceof MenuBuilder ? (MenuBuilder) menu : null;

             if (featureId == Window.FEATURE_OPTIONS_PANEL && mb == null) {
                 // If this is an options menu but it's not an AppCompat menu, we eat the event
                 // and return false
                 return false;
             }

             // On ICS and below devices, onPreparePanel calls menu.hasVisibleItems() to determine
             // if a panel is prepared. This interferes with any initially invisible items, which
             // are later made visible. We workaround it by making hasVisibleItems() always
             // return true during the onPreparePanel call.
             if (mb != null) {
                 mb.setOverrideVisibleItems(true);
             }

             final boolean handled = super.onPreparePanel(featureId, view, menu);

             if (mb != null) {
                 mb.setOverrideVisibleItems(false);
             }

             return handled;
         }

         @Override
         public boolean onMenuOpened(int featureId, Menu menu) {
             super.onMenuOpened(featureId, menu);
             AppCompatDelegateImplBase.this.onMenuOpened(featureId, menu);
             return true;
         }

         @Override
         public void onPanelClosed(int featureId, Menu menu) {
             super.onPanelClosed(featureId, menu);
             AppCompatDelegateImplBase.this.onPanelClosed(featureId, menu);
         }
     }
 }
	/*
	* Copyright (C) 2013 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 android.support.v7.app;

	import android.app.Activity;
	import android.content.Context;
	import android.content.res.Resources;
	import android.content.res.TypedArray;
	import android.graphics.drawable.Drawable;
	import android.os.Build;
	import android.os.Bundle;
	import android.support.v7.appcompat.R;
	import android.support.v7.view.ActionMode;
	import android.support.v7.view.SupportMenuInflater;
	import android.support.v7.view.WindowCallbackWrapper;
	import android.support.v7.view.menu.MenuBuilder;
	import android.support.v7.widget.AppCompatDrawableManager;
	import android.support.v7.widget.TintTypedArray;
	import android.view.KeyEvent;
	import android.view.Menu;
	import android.view.MenuInflater;
	import android.view.View;
	import android.view.Window;

	abstract class AppCompatDelegateImplBase extends AppCompatDelegate {

	static final boolean DEBUG = false;

	private static boolean sInstalledExceptionHandler;
	private static final boolean SHOULD_INSTALL_EXCEPTION_HANDLER = Build.VERSION.SDK_INT < 21;

	static final String EXCEPTION_HANDLER_MESSAGE_SUFFIX= ". If the resource you are"
	+ " trying to use is a vector resource, you may be referencing it in an unsupported"
	+ " way. See AppCompatDelegate.setCompatVectorFromResourcesEnabled() for more info.";

	static {
	if (SHOULD_INSTALL_EXCEPTION_HANDLER && !sInstalledExceptionHandler) {
	final Thread.UncaughtExceptionHandler defHandler
	= Thread.getDefaultUncaughtExceptionHandler();

	Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
	@Override
	public void uncaughtException(Thread thread, final Throwable thowable) {
	if (shouldWrapException(thowable)) {
	// Now wrap the throwable, but append some extra information to the message
	final Throwable wrapped = new Resources.NotFoundException(
	thowable.getMessage() + EXCEPTION_HANDLER_MESSAGE_SUFFIX);
	wrapped.initCause(thowable.getCause());
	wrapped.setStackTrace(thowable.getStackTrace());
	defHandler.uncaughtException(thread, wrapped);
	} else {
	defHandler.uncaughtException(thread, thowable);
	}
	}

	private boolean shouldWrapException(Throwable throwable) {
	if (throwable instanceof Resources.NotFoundException) {
	final String message = throwable.getMessage();
	return message != null && (message.contains("drawable")
	\|\| message.contains("Drawable"));
	}
	return false;
	}
	});

	sInstalledExceptionHandler = true;
	}
	}

	private static final int[] sWindowBackgroundStyleable = {android.R.attr.windowBackground};

	final Context mContext;
	final Window mWindow;
	final Window.Callback mOriginalWindowCallback;
	final Window.Callback mAppCompatWindowCallback;
	final AppCompatCallback mAppCompatCallback;

	ActionBar mActionBar;
	MenuInflater mMenuInflater;

	// true if this activity has an action bar.
	boolean mHasActionBar;
	// true if this activity's action bar overlays other activity content.
	boolean mOverlayActionBar;
	// true if this any action modes should overlay the activity content
	boolean mOverlayActionMode;
	// true if this activity is floating (e.g. Dialog)
	boolean mIsFloating;
	// true if this activity has no title
	boolean mWindowNoTitle;

	private CharSequence mTitle;

	private boolean mIsStarted;
	private boolean mIsDestroyed;

	AppCompatDelegateImplBase(Context context, Window window, AppCompatCallback callback) {
	mContext = context;
	mWindow = window;
	mAppCompatCallback = callback;

	mOriginalWindowCallback = mWindow.getCallback();
	if (mOriginalWindowCallback instanceof AppCompatWindowCallbackBase) {
	throw new IllegalStateException(
	"AppCompat has already installed itself into the Window");
	}
	mAppCompatWindowCallback = wrapWindowCallback(mOriginalWindowCallback);
	// Now install the new callback
	mWindow.setCallback(mAppCompatWindowCallback);

	final TintTypedArray a = TintTypedArray.obtainStyledAttributes(
	context, null, sWindowBackgroundStyleable);
	final Drawable winBg = a.getDrawableIfKnown(0);
	if (winBg != null) {
	mWindow.setBackgroundDrawable(winBg);
	}
	a.recycle();
	}

	abstract void initWindowDecorActionBar();

	Window.Callback wrapWindowCallback(Window.Callback callback) {
	return new AppCompatWindowCallbackBase(callback);
	}

	@Override
	public ActionBar getSupportActionBar() {
	// The Action Bar should be lazily created as hasActionBar
	// could change after onCreate
	initWindowDecorActionBar();
	return mActionBar;
	}

	final ActionBar peekSupportActionBar() {
	return mActionBar;
	}

	@Override
	public MenuInflater getMenuInflater() {
	// Make sure that action views can get an appropriate theme.
	if (mMenuInflater == null) {
	initWindowDecorActionBar();
	mMenuInflater = new SupportMenuInflater(
	mActionBar != null ? mActionBar.getThemedContext() : mContext);
	}
	return mMenuInflater;
	}

	// Methods used to create and respond to options menu
	abstract void onPanelClosed(int featureId, Menu menu);

	abstract boolean onMenuOpened(int featureId, Menu menu);

	abstract boolean dispatchKeyEvent(KeyEvent event);

	abstract boolean onKeyShortcut(int keyCode, KeyEvent event);

	@Override
	public void setLocalNightMode(@NightMode int mode) {
	// no-op
	}

	@Override
	public final ActionBarDrawerToggle.Delegate getDrawerToggleDelegate() {
	return new ActionBarDrawableToggleImpl();
	}

	final Context getActionBarThemedContext() {
	Context context = null;

	// If we have an action bar, let it return a themed context
	ActionBar ab = getSupportActionBar();
	if (ab != null) {
	context = ab.getThemedContext();
	}

	if (context == null) {
	context = mContext;
	}
	return context;
	}

	private class ActionBarDrawableToggleImpl implements ActionBarDrawerToggle.Delegate {
	ActionBarDrawableToggleImpl() {
	}

	@Override
	public Drawable getThemeUpIndicator() {
	final TintTypedArray a = TintTypedArray.obtainStyledAttributes(
	getActionBarThemedContext(), null, new int[]{ R.attr.homeAsUpIndicator });
	final Drawable result = a.getDrawable(0);
	a.recycle();
	return result;
	}

	@Override
	public Context getActionBarThemedContext() {
	return AppCompatDelegateImplBase.this.getActionBarThemedContext();
	}

	@Override
	public boolean isNavigationVisible() {
	final ActionBar ab = getSupportActionBar();
	return ab != null && (ab.getDisplayOptions() & ActionBar.DISPLAY_HOME_AS_UP) != 0;
	}

	@Override
	public void setActionBarUpIndicator(Drawable upDrawable, int contentDescRes) {
	ActionBar ab = getSupportActionBar();
	if (ab != null) {
	ab.setHomeAsUpIndicator(upDrawable);
	ab.setHomeActionContentDescription(contentDescRes);
	}
	}

	@Override
	public void setActionBarDescription(int contentDescRes) {
	ActionBar ab = getSupportActionBar();
	if (ab != null) {
	ab.setHomeActionContentDescription(contentDescRes);
	}
	}
	}

	abstract ActionMode startSupportActionModeFromWindow(ActionMode.Callback callback);

	@Override
	public void onStart() {
	mIsStarted = true;
	}

	@Override
	public void onStop() {
	mIsStarted = false;
	}

	@Override
	public void onDestroy() {
	mIsDestroyed = true;
	}

	@Override
	public void setHandleNativeActionModesEnabled(boolean enabled) {
	// no-op pre-v14
	}

	@Override
	public boolean isHandleNativeActionModesEnabled() {
	// Always false pre-v14
	return false;
	}

	@Override
	public boolean applyDayNight() {
	// no-op on v7
	return false;
	}

	final boolean isDestroyed() {
	return mIsDestroyed;
	}

	final boolean isStarted() {
	return mIsStarted;
	}

	final Window.Callback getWindowCallback() {
	return mWindow.getCallback();
	}

	@Override
	public final void setTitle(CharSequence title) {
	mTitle = title;
	onTitleChanged(title);
	}

	@Override
	public void onSaveInstanceState(Bundle outState) {
	// no-op
	}

	abstract void onTitleChanged(CharSequence title);

	final CharSequence getTitle() {
	// If the original window callback is an Activity, we'll use it's title
	if (mOriginalWindowCallback instanceof Activity) {
	return ((Activity) mOriginalWindowCallback).getTitle();
	}
	// Else, we'll return the title we have recorded ourselves
	return mTitle;
	}

	class AppCompatWindowCallbackBase extends WindowCallbackWrapper {
	AppCompatWindowCallbackBase(Window.Callback callback) {
	super(callback);
	}

	@Override
	public boolean dispatchKeyEvent(KeyEvent event) {
	return AppCompatDelegateImplBase.this.dispatchKeyEvent(event)
	\|\| super.dispatchKeyEvent(event);
	}

	@Override
	public boolean dispatchKeyShortcutEvent(KeyEvent event) {
	return super.dispatchKeyShortcutEvent(event)
	\|\| AppCompatDelegateImplBase.this.onKeyShortcut(event.getKeyCode(), event);
	}

	@Override
	public boolean onCreatePanelMenu(int featureId, Menu menu) {
	if (featureId == Window.FEATURE_OPTIONS_PANEL && !(menu instanceof MenuBuilder)) {
	// If this is an options menu but it's not an AppCompat menu, we eat the event
	// and return false
	return false;
	}
	return super.onCreatePanelMenu(featureId, menu);
	}

	@Override
	public void onContentChanged() {
	// We purposely do not propagate this call as this is called when we install
	// our sub-decor rather than the user's content
	}

	@Override
	public boolean onPreparePanel(int featureId, View view, Menu menu) {
	final MenuBuilder mb = menu instanceof MenuBuilder ? (MenuBuilder) menu : null;

	if (featureId == Window.FEATURE_OPTIONS_PANEL && mb == null) {
	// If this is an options menu but it's not an AppCompat menu, we eat the event
	// and return false
	return false;
	}

	// On ICS and below devices, onPreparePanel calls menu.hasVisibleItems() to determine
	// if a panel is prepared. This interferes with any initially invisible items, which
	// are later made visible. We workaround it by making hasVisibleItems() always
	// return true during the onPreparePanel call.
	if (mb != null) {
	mb.setOverrideVisibleItems(true);
	}

	final boolean handled = super.onPreparePanel(featureId, view, menu);

	if (mb != null) {
	mb.setOverrideVisibleItems(false);
	}

	return handled;
	}

	@Override
	public boolean onMenuOpened(int featureId, Menu menu) {
	super.onMenuOpened(featureId, menu);
	AppCompatDelegateImplBase.this.onMenuOpened(featureId, menu);
	return true;
	}

	@Override
	public void onPanelClosed(int featureId, Menu menu) {
	super.onPanelClosed(featureId, menu);
	AppCompatDelegateImplBase.this.onPanelClosed(featureId, menu);
	}
	}
	}