1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.support.v7.app;
18
19import android.content.Context;
20import android.content.res.Configuration;
21import android.content.res.TypedArray;
22import android.graphics.drawable.Drawable;
23import android.support.v4.app.ActionBarDrawerToggle;
24import android.support.v4.view.WindowCompat;
25import android.support.v7.appcompat.R;
26import android.support.v7.internal.view.menu.ListMenuPresenter;
27import android.support.v7.internal.view.menu.MenuBuilder;
28import android.support.v7.internal.view.menu.MenuPresenter;
29import android.support.v7.internal.view.menu.MenuView;
30import android.support.v7.internal.view.menu.MenuWrapperFactory;
31import android.support.v7.internal.widget.ActionBarContainer;
32import android.support.v7.internal.widget.ActionBarContextView;
33import android.support.v7.internal.widget.ActionBarView;
34import android.support.v7.internal.widget.ProgressBarICS;
35import android.support.v7.view.ActionMode;
36import android.view.Menu;
37import android.view.MenuItem;
38import android.view.View;
39import android.view.ViewGroup;
40import android.view.Window;
41import android.widget.FrameLayout;
42
43class ActionBarActivityDelegateBase extends ActionBarActivityDelegate implements
44        MenuPresenter.Callback, MenuBuilder.Callback {
45    private static final String TAG = "ActionBarActivityDelegateBase";
46
47    private static final int[] ACTION_BAR_DRAWABLE_TOGGLE_ATTRS = new int[] {
48            R.attr.homeAsUpIndicator
49    };
50
51    private ActionBarView mActionBarView;
52    private ListMenuPresenter mListMenuPresenter;
53    private MenuBuilder mMenu;
54
55    private ActionMode mActionMode;
56
57    // true if we have installed a window sub-decor layout.
58    private boolean mSubDecorInstalled;
59
60    private CharSequence mTitleToSet;
61
62    // Used to keep track of Progress Bar Window features
63    private boolean mFeatureProgress, mFeatureIndeterminateProgress;
64
65    private boolean mInvalidateMenuPosted;
66    private final Runnable mInvalidateMenuRunnable = new Runnable() {
67        @Override
68        public void run() {
69            final MenuBuilder menu = createMenu();
70            if (mActivity.superOnCreatePanelMenu(Window.FEATURE_OPTIONS_PANEL, menu) &&
71                    mActivity.superOnPreparePanel(Window.FEATURE_OPTIONS_PANEL, null, menu)) {
72                setMenu(menu);
73            } else {
74                setMenu(null);
75            }
76
77            mInvalidateMenuPosted = false;
78        }
79    };
80
81    ActionBarActivityDelegateBase(ActionBarActivity activity) {
82        super(activity);
83    }
84
85    @Override
86    public ActionBar createSupportActionBar() {
87        ensureSubDecor();
88        return new ActionBarImplBase(mActivity, mActivity);
89    }
90
91    @Override
92    public void onConfigurationChanged(Configuration newConfig) {
93        // If this is called before sub-decor is installed, ActionBar will not
94        // be properly initialized.
95        if (mHasActionBar && mSubDecorInstalled) {
96            // Note: The action bar will need to access
97            // view changes from superclass.
98            ActionBarImplBase actionBar = (ActionBarImplBase) getSupportActionBar();
99            actionBar.onConfigurationChanged(newConfig);
100        }
101    }
102
103    @Override
104    public void onStop() {
105        ActionBarImplBase ab = (ActionBarImplBase) getSupportActionBar();
106        if (ab != null) {
107            ab.setShowHideAnimationEnabled(false);
108        }
109    }
110
111    @Override
112    public void onPostResume() {
113        ActionBarImplBase ab = (ActionBarImplBase) getSupportActionBar();
114        if (ab != null) {
115            ab.setShowHideAnimationEnabled(true);
116        }
117    }
118
119    @Override
120    public void setContentView(View v) {
121        ensureSubDecor();
122        if (mHasActionBar) {
123            ViewGroup contentParent = (ViewGroup) mActivity.findViewById(android.R.id.content);
124            contentParent.removeAllViews();
125            contentParent.addView(v);
126        } else {
127            mActivity.superSetContentView(v);
128        }
129        mActivity.onSupportContentChanged();
130    }
131
132    @Override
133    public void setContentView(int resId) {
134        ensureSubDecor();
135        if (mHasActionBar) {
136            ViewGroup contentParent = (ViewGroup) mActivity.findViewById(android.R.id.content);
137            contentParent.removeAllViews();
138            mActivity.getLayoutInflater().inflate(resId, contentParent);
139        } else {
140            mActivity.superSetContentView(resId);
141        }
142        mActivity.onSupportContentChanged();
143    }
144
145    @Override
146    public void setContentView(View v, ViewGroup.LayoutParams lp) {
147        ensureSubDecor();
148        if (mHasActionBar) {
149            ViewGroup contentParent = (ViewGroup) mActivity.findViewById(android.R.id.content);
150            contentParent.removeAllViews();
151            contentParent.addView(v, lp);
152        } else {
153            mActivity.superSetContentView(v, lp);
154        }
155        mActivity.onSupportContentChanged();
156    }
157
158    @Override
159    public void addContentView(View v, ViewGroup.LayoutParams lp) {
160        ensureSubDecor();
161        if (mHasActionBar) {
162            ViewGroup contentParent = (ViewGroup) mActivity.findViewById(android.R.id.content);
163            contentParent.addView(v, lp);
164        } else {
165            mActivity.superSetContentView(v, lp);
166        }
167        mActivity.onSupportContentChanged();
168    }
169
170    @Override
171    public void onContentChanged() {
172        // Ignore all calls to this method as we call onSupportContentChanged manually above
173    }
174
175    final void ensureSubDecor() {
176        if (mHasActionBar && !mSubDecorInstalled) {
177            if (mOverlayActionBar) {
178                mActivity.superSetContentView(R.layout.abc_action_bar_decor_overlay);
179            } else {
180                mActivity.superSetContentView(R.layout.abc_action_bar_decor);
181            }
182            mActionBarView = (ActionBarView) mActivity.findViewById(R.id.action_bar);
183            mActionBarView.setWindowCallback(mActivity);
184
185            /**
186             * Progress Bars
187             */
188            if (mFeatureProgress) {
189                mActionBarView.initProgress();
190            }
191            if (mFeatureIndeterminateProgress) {
192                mActionBarView.initIndeterminateProgress();
193            }
194
195            /**
196             * Split Action Bar
197             */
198            boolean splitWhenNarrow = UIOPTION_SPLIT_ACTION_BAR_WHEN_NARROW
199                    .equals(getUiOptionsFromMetadata());
200            boolean splitActionBar;
201
202            if (splitWhenNarrow) {
203                splitActionBar = mActivity.getResources()
204                        .getBoolean(R.bool.abc_split_action_bar_is_narrow);
205            } else {
206                TypedArray a = mActivity.obtainStyledAttributes(R.styleable.ActionBarWindow);
207                splitActionBar = a
208                        .getBoolean(R.styleable.ActionBarWindow_windowSplitActionBar, false);
209                a.recycle();
210            }
211
212            final ActionBarContainer splitView = (ActionBarContainer) mActivity.findViewById(
213                    R.id.split_action_bar);
214            if (splitView != null) {
215                mActionBarView.setSplitView(splitView);
216                mActionBarView.setSplitActionBar(splitActionBar);
217                mActionBarView.setSplitWhenNarrow(splitWhenNarrow);
218
219                final ActionBarContextView cab = (ActionBarContextView) mActivity.findViewById(
220                        R.id.action_context_bar);
221                cab.setSplitView(splitView);
222                cab.setSplitActionBar(splitActionBar);
223                cab.setSplitWhenNarrow(splitWhenNarrow);
224            }
225
226            // Change our content FrameLayout to use the android.R.id.content id.
227            // Useful for fragments.
228            View content = mActivity.findViewById(android.R.id.content);
229            content.setId(View.NO_ID);
230            View abcContent = mActivity.findViewById(R.id.action_bar_activity_content);
231            abcContent.setId(android.R.id.content);
232
233            // A title was set before we've install the decor so set it now.
234            if (mTitleToSet != null) {
235                mActionBarView.setWindowTitle(mTitleToSet);
236                mTitleToSet  = null;
237            }
238
239            mSubDecorInstalled = true;
240            supportInvalidateOptionsMenu();
241        }
242    }
243
244    @Override
245    public boolean supportRequestWindowFeature(int featureId) {
246        switch (featureId) {
247            case WindowCompat.FEATURE_ACTION_BAR:
248                mHasActionBar = true;
249                return true;
250            case WindowCompat.FEATURE_ACTION_BAR_OVERLAY:
251                mOverlayActionBar = true;
252                return true;
253            case Window.FEATURE_PROGRESS:
254                mFeatureProgress = true;
255                return true;
256            case Window.FEATURE_INDETERMINATE_PROGRESS:
257                mFeatureIndeterminateProgress = true;
258                return true;
259            default:
260                return mActivity.requestWindowFeature(featureId);
261        }
262    }
263
264    @Override
265    public void onTitleChanged(CharSequence title) {
266        if (mActionBarView != null) {
267            mActionBarView.setWindowTitle(title);
268        } else {
269            mTitleToSet = title;
270        }
271    }
272
273    @Override
274    public View onCreatePanelView(int featureId) {
275        View createdPanelView = null;
276
277        if (featureId == Window.FEATURE_OPTIONS_PANEL) {
278            boolean show = true;
279            MenuBuilder menu = mMenu;
280
281            if (mActionMode == null) {
282                // We only want to dispatch Activity/Fragment menu calls if there isn't
283                // currently an action mode
284
285                if (menu == null) {
286                    // We don't have a menu created, so create one
287                    menu = createMenu();
288                    setMenu(menu);
289
290                    // Make sure we're not dispatching item changes to presenters
291                    menu.stopDispatchingItemsChanged();
292                    // Dispatch onCreateOptionsMenu
293                    show = mActivity.superOnCreatePanelMenu(Window.FEATURE_OPTIONS_PANEL, menu);
294                }
295
296                if (show) {
297                    // Make sure we're not dispatching item changes to presenters
298                    menu.stopDispatchingItemsChanged();
299                    // Dispatch onPrepareOptionsMenu
300                    show = mActivity.superOnPreparePanel(Window.FEATURE_OPTIONS_PANEL, null, menu);
301                }
302            }
303
304            if (show) {
305                createdPanelView = (View) getListMenuView(mActivity, this);
306
307                // Allow menu to start dispatching changes to presenters
308                menu.startDispatchingItemsChanged();
309            } else {
310                // If the menu isn't being shown, we no longer need it
311                setMenu(null);
312            }
313        }
314
315        return createdPanelView;
316    }
317
318    @Override
319    public boolean onCreatePanelMenu(int featureId, Menu menu) {
320        if (featureId != Window.FEATURE_OPTIONS_PANEL) {
321            return mActivity.superOnCreatePanelMenu(featureId, menu);
322        }
323        return false;
324    }
325
326    @Override
327    public boolean onPreparePanel(int featureId, View view, Menu menu) {
328        if (featureId != Window.FEATURE_OPTIONS_PANEL) {
329            return mActivity.superOnPreparePanel(featureId, view, menu);
330        }
331        return false;
332    }
333
334    @Override
335    public boolean onMenuItemSelected(int featureId, MenuItem item) {
336        if (featureId == Window.FEATURE_OPTIONS_PANEL) {
337            item = MenuWrapperFactory.createMenuItemWrapper(item);
338        }
339        return mActivity.superOnMenuItemSelected(featureId, item);
340    }
341
342    @Override
343    public boolean onMenuItemSelected(MenuBuilder menu, MenuItem item) {
344        return mActivity.onMenuItemSelected(Window.FEATURE_OPTIONS_PANEL, item);
345    }
346
347    @Override
348    public void onMenuModeChange(MenuBuilder menu) {
349        reopenMenu(menu, true);
350    }
351
352    @Override
353    public void onCloseMenu(MenuBuilder menu, boolean allMenusAreClosing) {
354        mActivity.closeOptionsMenu();
355    }
356
357    @Override
358    public boolean onOpenSubMenu(MenuBuilder subMenu) {
359        return false;
360    }
361
362    @Override
363    public ActionMode startSupportActionMode(ActionMode.Callback callback) {
364        if (callback == null) {
365            throw new IllegalArgumentException("ActionMode callback can not be null.");
366        }
367
368        if (mActionMode != null) {
369            mActionMode.finish();
370        }
371
372        final ActionMode.Callback wrappedCallback = new ActionModeCallbackWrapper(callback);
373
374        ActionBarImplBase ab = (ActionBarImplBase) getSupportActionBar();
375        if (ab != null) {
376            mActionMode = ab.startActionMode(wrappedCallback);
377        }
378
379        if (mActionMode != null) {
380            mActivity.onSupportActionModeStarted(mActionMode);
381        }
382        return mActionMode;
383    }
384
385    @Override
386    public void supportInvalidateOptionsMenu() {
387        if (!mInvalidateMenuPosted) {
388            mInvalidateMenuPosted = true;
389            mActivity.getWindow().getDecorView().post(mInvalidateMenuRunnable);
390        }
391    }
392
393    private MenuBuilder createMenu() {
394        MenuBuilder menu = new MenuBuilder(getActionBarThemedContext());
395        menu.setCallback(this);
396        return menu;
397    }
398
399    private void reopenMenu(MenuBuilder menu, boolean toggleMenuMode) {
400        if (mActionBarView != null && mActionBarView.isOverflowReserved()) {
401            if (!mActionBarView.isOverflowMenuShowing() || !toggleMenuMode) {
402                if (mActionBarView.getVisibility() == View.VISIBLE) {
403                    mActionBarView.showOverflowMenu();
404                }
405            } else {
406                mActionBarView.hideOverflowMenu();
407            }
408            return;
409        }
410
411        menu.close();
412    }
413
414    private MenuView getListMenuView(Context context, MenuPresenter.Callback cb) {
415        if (mMenu == null) {
416            return null;
417        }
418
419        if (mListMenuPresenter == null) {
420            TypedArray a = context.obtainStyledAttributes(R.styleable.Theme);
421            final int listPresenterTheme = a.getResourceId(
422                    R.styleable.Theme_panelMenuListTheme,
423                    R.style.Theme_AppCompat_CompactMenu);
424            a.recycle();
425
426            mListMenuPresenter = new ListMenuPresenter(
427                    R.layout.abc_list_menu_item_layout, listPresenterTheme);
428            mListMenuPresenter.setCallback(cb);
429            mMenu.addMenuPresenter(mListMenuPresenter);
430        } else {
431            // Make sure we update the ListView
432            mListMenuPresenter.updateMenuView(false);
433        }
434
435        return mListMenuPresenter.getMenuView(new FrameLayout(context));
436    }
437
438    private void setMenu(MenuBuilder menu) {
439        if (menu == mMenu) {
440            return;
441        }
442
443        if (mMenu != null) {
444            mMenu.removeMenuPresenter(mListMenuPresenter);
445        }
446        mMenu = menu;
447
448        if (menu != null && mListMenuPresenter != null) {
449            // Only update list menu if there isn't an action mode menu
450            menu.addMenuPresenter(mListMenuPresenter);
451        }
452        if (mActionBarView != null) {
453            mActionBarView.setMenu(menu, this);
454        }
455    }
456
457    @Override
458    public boolean onBackPressed() {
459        // Back cancels action modes first.
460        if (mActionMode != null) {
461            mActionMode.finish();
462            return true;
463        }
464
465        // Next collapse any expanded action views.
466        if (mActionBarView != null && mActionBarView.hasExpandedActionView()) {
467            mActionBarView.collapseActionView();
468            return true;
469        }
470
471        return false;
472    }
473
474    @Override
475    void setSupportProgressBarVisibility(boolean visible) {
476        updateProgressBars(visible ? Window.PROGRESS_VISIBILITY_ON :
477                Window.PROGRESS_VISIBILITY_OFF);
478    }
479
480    @Override
481    void setSupportProgressBarIndeterminateVisibility(boolean visible) {
482        updateProgressBars(visible ? Window.PROGRESS_VISIBILITY_ON :
483                Window.PROGRESS_VISIBILITY_OFF);
484    }
485
486    @Override
487    void setSupportProgressBarIndeterminate(boolean indeterminate) {
488        updateProgressBars(indeterminate ? Window.PROGRESS_INDETERMINATE_ON
489                : Window.PROGRESS_INDETERMINATE_OFF);
490    }
491
492    @Override
493    void setSupportProgress(int progress) {
494        updateProgressBars(Window.PROGRESS_START + progress);
495    }
496
497    @Override
498    ActionBarDrawerToggle.Delegate getDrawerToggleDelegate() {
499        return new ActionBarDrawableToggleImpl();
500    }
501
502    /**
503     * Progress Bar function. Mostly extracted from PhoneWindow.java
504     */
505    private void updateProgressBars(int value) {
506        ProgressBarICS circularProgressBar = getCircularProgressBar();
507        ProgressBarICS horizontalProgressBar = getHorizontalProgressBar();
508
509        if (value == Window.PROGRESS_VISIBILITY_ON) {
510            if (mFeatureProgress) {
511                int level = horizontalProgressBar.getProgress();
512                int visibility = (horizontalProgressBar.isIndeterminate() || level < 10000) ?
513                        View.VISIBLE : View.INVISIBLE;
514                horizontalProgressBar.setVisibility(visibility);
515            }
516            if (mFeatureIndeterminateProgress) {
517                circularProgressBar.setVisibility(View.VISIBLE);
518            }
519        } else if (value == Window.PROGRESS_VISIBILITY_OFF) {
520            if (mFeatureProgress) {
521                horizontalProgressBar.setVisibility(View.GONE);
522            }
523            if (mFeatureIndeterminateProgress) {
524                circularProgressBar.setVisibility(View.GONE);
525            }
526        } else if (value == Window.PROGRESS_INDETERMINATE_ON) {
527            horizontalProgressBar.setIndeterminate(true);
528        } else if (value == Window.PROGRESS_INDETERMINATE_OFF) {
529            horizontalProgressBar.setIndeterminate(false);
530        } else if (Window.PROGRESS_START <= value && value <= Window.PROGRESS_END) {
531            // We want to set the progress value before testing for visibility
532            // so that when the progress bar becomes visible again, it has the
533            // correct level.
534            horizontalProgressBar.setProgress(value - Window.PROGRESS_START);
535
536            if (value < Window.PROGRESS_END) {
537                showProgressBars(horizontalProgressBar, circularProgressBar);
538            } else {
539                hideProgressBars(horizontalProgressBar, circularProgressBar);
540            }
541        }
542    }
543
544    private void showProgressBars(ProgressBarICS horizontalProgressBar,
545            ProgressBarICS spinnyProgressBar) {
546        if (mFeatureIndeterminateProgress && spinnyProgressBar.getVisibility() == View.INVISIBLE) {
547            spinnyProgressBar.setVisibility(View.VISIBLE);
548        }
549        // Only show the progress bars if the primary progress is not complete
550        if (mFeatureProgress && horizontalProgressBar.getProgress() < 10000) {
551            horizontalProgressBar.setVisibility(View.VISIBLE);
552        }
553    }
554
555    private void hideProgressBars(ProgressBarICS horizontalProgressBar,
556            ProgressBarICS spinnyProgressBar) {
557        if (mFeatureIndeterminateProgress && spinnyProgressBar.getVisibility() == View.VISIBLE) {
558            spinnyProgressBar.setVisibility(View.INVISIBLE);
559        }
560        if (mFeatureProgress && horizontalProgressBar.getVisibility() == View.VISIBLE) {
561            horizontalProgressBar.setVisibility(View.INVISIBLE);
562        }
563    }
564
565    private ProgressBarICS getCircularProgressBar() {
566        ProgressBarICS pb = (ProgressBarICS) mActionBarView.findViewById(R.id.progress_circular);
567        if (pb != null) {
568            pb.setVisibility(View.INVISIBLE);
569        }
570        return pb;
571    }
572
573    private ProgressBarICS getHorizontalProgressBar() {
574        ProgressBarICS pb = (ProgressBarICS) mActionBarView.findViewById(R.id.progress_horizontal);
575        if (pb != null) {
576            pb.setVisibility(View.INVISIBLE);
577        }
578        return pb;
579    }
580
581    /**
582     * Clears out internal reference when the action mode is destroyed.
583     */
584    private class ActionModeCallbackWrapper implements ActionMode.Callback {
585        private ActionMode.Callback mWrapped;
586
587        public ActionModeCallbackWrapper(ActionMode.Callback wrapped) {
588            mWrapped = wrapped;
589        }
590
591        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
592            return mWrapped.onCreateActionMode(mode, menu);
593        }
594
595        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
596            return mWrapped.onPrepareActionMode(mode, menu);
597        }
598
599        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
600            return mWrapped.onActionItemClicked(mode, item);
601        }
602
603        public void onDestroyActionMode(ActionMode mode) {
604            mWrapped.onDestroyActionMode(mode);
605            mActivity.onSupportActionModeFinished(mode);
606            mActionMode = null;
607        }
608    }
609
610    private class ActionBarDrawableToggleImpl
611            implements ActionBarDrawerToggle.Delegate {
612
613        @Override
614        public Drawable getThemeUpIndicator() {
615            final TypedArray a = mActivity.obtainStyledAttributes(ACTION_BAR_DRAWABLE_TOGGLE_ATTRS);
616            final Drawable result = a.getDrawable(0);
617            a.recycle();
618            return result;
619        }
620
621        @Override
622        public void setActionBarUpIndicator(Drawable upDrawable, int contentDescRes) {
623            if (mActionBarView != null) {
624                mActionBarView.setHomeAsUpIndicator(upDrawable);
625            }
626        }
627
628        @Override
629        public void setActionBarDescription(int contentDescRes) {
630            // No support for setting Action Bar content description
631        }
632    }
633
634}
635