2 * Copyright (C) 2006 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 import android.content.Context;
20 import android.content.res.Configuration;
21 import android.content.res.TypedArray;
22 import android.graphics.PixelFormat;
23 import android.graphics.drawable.Drawable;
24 import android.net.Uri;
25 import android.os.Bundle;
26 import android.os.IBinder;
27 import android.view.accessibility.AccessibilityEvent;
30 * Abstract base class for a top-level window look and behavior policy. An
31 * instance of this class should be used as the top-level view added to the
32 * window manager. It provides standard UI policies such as a background, title
33 * area, default key processing, etc.
35 * <p>The only existing implementation of this abstract class is
36 * android.policy.PhoneWindow, which you should instantiate when needing a
37 * Window. Eventually that class will be refactored and a factory method
38 * added for creating Window instances without knowing about a particular
41 public abstract class Window {
42 /** Flag for the "options panel" feature. This is enabled by default. */
43 public static final int FEATURE_OPTIONS_PANEL = 0;
44 /** Flag for the "no title" feature, turning off the title at the top
46 public static final int FEATURE_NO_TITLE = 1;
47 /** Flag for the progress indicator feature */
48 public static final int FEATURE_PROGRESS = 2;
49 /** Flag for having an icon on the left side of the title bar */
50 public static final int FEATURE_LEFT_ICON = 3;
51 /** Flag for having an icon on the right side of the title bar */
52 public static final int FEATURE_RIGHT_ICON = 4;
53 /** Flag for indeterminate progress */
54 public static final int FEATURE_INDETERMINATE_PROGRESS = 5;
55 /** Flag for the context menu. This is enabled by default. */
56 public static final int FEATURE_CONTEXT_MENU = 6;
57 /** Flag for custom title. You cannot combine this feature with other title features. */
58 public static final int FEATURE_CUSTOM_TITLE = 7;
59 /** Flag for asking for an OpenGL enabled window.
60 All 2D graphics will be handled by OpenGL ES.
63 public static final int FEATURE_OPENGL = 8;
64 /** Flag for setting the progress bar's visibility to VISIBLE */
65 public static final int PROGRESS_VISIBILITY_ON = -1;
66 /** Flag for setting the progress bar's visibility to GONE */
67 public static final int PROGRESS_VISIBILITY_OFF = -2;
68 /** Flag for setting the progress bar's indeterminate mode on */
69 public static final int PROGRESS_INDETERMINATE_ON = -3;
70 /** Flag for setting the progress bar's indeterminate mode off */
71 public static final int PROGRESS_INDETERMINATE_OFF = -4;
72 /** Starting value for the (primary) progress */
73 public static final int PROGRESS_START = 0;
74 /** Ending value for the (primary) progress */
75 public static final int PROGRESS_END = 10000;
76 /** Lowest possible value for the secondary progress */
77 public static final int PROGRESS_SECONDARY_START = 20000;
78 /** Highest possible value for the secondary progress */
79 public static final int PROGRESS_SECONDARY_END = 30000;
81 /** The default features enabled */
82 @SuppressWarnings({"PointlessBitwiseExpression"})
83 protected static final int DEFAULT_FEATURES = (1 << FEATURE_OPTIONS_PANEL) |
84 (1 << FEATURE_CONTEXT_MENU);
87 * The ID that the main layout in the XML layout file should have.
89 public static final int ID_ANDROID_CONTENT = com.android.internal.R.id.content;
91 private final Context mContext;
93 private TypedArray mWindowStyle;
94 private Callback mCallback;
95 private WindowManager mWindowManager;
96 private IBinder mAppToken;
97 private String mAppName;
98 private Window mContainer;
99 private Window mActiveChild;
100 private boolean mIsActive = false;
101 private boolean mHasChildren = false;
102 private int mForcedWindowFlags = 0;
104 private int mFeatures = DEFAULT_FEATURES;
105 private int mLocalFeatures = DEFAULT_FEATURES;
107 private boolean mHaveWindowFormat = false;
108 private int mDefaultWindowFormat = PixelFormat.OPAQUE;
110 private boolean mHasSoftInputMode = false;
112 // The current window attributes.
113 private final WindowManager.LayoutParams mWindowAttributes =
114 new WindowManager.LayoutParams();
117 * API from a Window back to its caller. This allows the client to
118 * intercept key dispatching, panels and menus, etc.
120 public interface Callback {
122 * Called to process key events. At the very least your
123 * implementation must call
124 * {@link android.view.Window#superDispatchKeyEvent} to do the
125 * standard key processing.
127 * @param event The key event.
129 * @return boolean Return true if this event was consumed.
131 public boolean dispatchKeyEvent(KeyEvent event);
134 * Called to process touch screen events. At the very least your
135 * implementation must call
136 * {@link android.view.Window#superDispatchTouchEvent} to do the
137 * standard touch screen processing.
139 * @param event The touch screen event.
141 * @return boolean Return true if this event was consumed.
143 public boolean dispatchTouchEvent(MotionEvent event);
146 * Called to process trackball events. At the very least your
147 * implementation must call
148 * {@link android.view.Window#superDispatchTrackballEvent} to do the
149 * standard trackball processing.
151 * @param event The trackball event.
153 * @return boolean Return true if this event was consumed.
155 public boolean dispatchTrackballEvent(MotionEvent event);
158 * Called to process population of {@link AccessibilityEvent}s.
160 * @param event The event.
162 * @return boolean Return true if event population was completed.
164 public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event);
167 * Instantiate the view to display in the panel for 'featureId'.
168 * You can return null, in which case the default content (typically
169 * a menu) will be created for you.
171 * @param featureId Which panel is being created.
173 * @return view The top-level view to place in the panel.
175 * @see #onPreparePanel
177 public View onCreatePanelView(int featureId);
180 * Initialize the contents of the menu for panel 'featureId'. This is
181 * called if onCreatePanelView() returns null, giving you a standard
182 * menu in which you can place your items. It is only called once for
183 * the panel, the first time it is shown.
185 * <p>You can safely hold on to <var>menu</var> (and any items created
186 * from it), making modifications to it as desired, until the next
187 * time onCreatePanelMenu() is called for this feature.
189 * @param featureId The panel being created.
190 * @param menu The menu inside the panel.
192 * @return boolean You must return true for the panel to be displayed;
193 * if you return false it will not be shown.
195 public boolean onCreatePanelMenu(int featureId, Menu menu);
198 * Prepare a panel to be displayed. This is called right before the
199 * panel window is shown, every time it is shown.
201 * @param featureId The panel that is being displayed.
202 * @param view The View that was returned by onCreatePanelView().
203 * @param menu If onCreatePanelView() returned null, this is the Menu
204 * being displayed in the panel.
206 * @return boolean You must return true for the panel to be displayed;
207 * if you return false it will not be shown.
209 * @see #onCreatePanelView
211 public boolean onPreparePanel(int featureId, View view, Menu menu);
214 * Called when a panel's menu is opened by the user. This may also be
215 * called when the menu is changing from one type to another (for
216 * example, from the icon menu to the expanded menu).
218 * @param featureId The panel that the menu is in.
219 * @param menu The menu that is opened.
220 * @return Return true to allow the menu to open, or false to prevent
221 * the menu from opening.
223 public boolean onMenuOpened(int featureId, Menu menu);
226 * Called when a panel's menu item has been selected by the user.
228 * @param featureId The panel that the menu is in.
229 * @param item The menu item that was selected.
231 * @return boolean Return true to finish processing of selection, or
232 * false to perform the normal menu handling (calling its
233 * Runnable or sending a Message to its target Handler).
235 public boolean onMenuItemSelected(int featureId, MenuItem item);
238 * This is called whenever the current window attributes change.
241 public void onWindowAttributesChanged(WindowManager.LayoutParams attrs);
244 * This hook is called whenever the content view of the screen changes
246 * {@link Window#setContentView(View, android.view.ViewGroup.LayoutParams)
247 * Window.setContentView} or
248 * {@link Window#addContentView(View, android.view.ViewGroup.LayoutParams)
249 * Window.addContentView}).
251 public void onContentChanged();
254 * This hook is called whenever the window focus changes. See
255 * {@link View#onWindowFocusChanged(boolean)
256 * View.onWindowFocusChanged(boolean)} for more information.
258 * @param hasFocus Whether the window now has focus.
260 public void onWindowFocusChanged(boolean hasFocus);
263 * Called when the window has been attached to the window manager.
264 * See {@link View#onAttachedToWindow() View.onAttachedToWindow()}
265 * for more information.
267 public void onAttachedToWindow();
270 * Called when the window has been attached to the window manager.
271 * See {@link View#onDetachedFromWindow() View.onDetachedFromWindow()}
272 * for more information.
274 public void onDetachedFromWindow();
277 * Called when a panel is being closed. If another logical subsequent
278 * panel is being opened (and this panel is being closed to make room for the subsequent
279 * panel), this method will NOT be called.
281 * @param featureId The panel that is being displayed.
282 * @param menu If onCreatePanelView() returned null, this is the Menu
283 * being displayed in the panel.
285 public void onPanelClosed(int featureId, Menu menu);
288 * Called when the user signals the desire to start a search.
290 * @return true if search launched, false if activity refuses (blocks)
292 * @see android.app.Activity#onSearchRequested()
294 public boolean onSearchRequested();
297 public Window(Context context) {
302 * Return the Context this window policy is running in, for retrieving
303 * resources and other information.
305 * @return Context The Context that was supplied to the constructor.
307 public final Context getContext() {
312 * Return the {@link android.R.styleable#Window} attributes from this
315 public final TypedArray getWindowStyle() {
316 synchronized (this) {
317 if (mWindowStyle == null) {
318 mWindowStyle = mContext.obtainStyledAttributes(
319 com.android.internal.R.styleable.Window);
326 * Set the container for this window. If not set, the DecorWindow
327 * operates as a top-level window; otherwise, it negotiates with the
328 * container to display itself appropriately.
330 * @param container The desired containing Window.
332 public void setContainer(Window container) {
333 mContainer = container;
334 if (container != null) {
335 // Embedded screens never have a title.
336 mFeatures |= 1<<FEATURE_NO_TITLE;
337 mLocalFeatures |= 1<<FEATURE_NO_TITLE;
338 container.mHasChildren = true;
343 * Return the container for this Window.
345 * @return Window The containing window, or null if this is a
348 public final Window getContainer() {
352 public final boolean hasChildren() {
357 * Set the window manager for use by this Window to, for example,
358 * display panels. This is <em>not</em> used for displaying the
359 * Window itself -- that must be done by the client.
361 * @param wm The ViewManager for adding new windows.
363 public void setWindowManager(WindowManager wm,
364 IBinder appToken, String appName) {
365 mAppToken = appToken;
368 wm = WindowManagerImpl.getDefault();
370 mWindowManager = new LocalWindowManager(wm);
373 private class LocalWindowManager implements WindowManager {
374 LocalWindowManager(WindowManager wm) {
376 mDefaultDisplay = mContext.getResources().getDefaultDisplay(
377 mWindowManager.getDefaultDisplay());
380 public final void addView(View view, ViewGroup.LayoutParams params) {
381 // Let this throw an exception on a bad params.
382 WindowManager.LayoutParams wp = (WindowManager.LayoutParams)params;
383 CharSequence curTitle = wp.getTitle();
384 if (wp.type >= WindowManager.LayoutParams.FIRST_SUB_WINDOW &&
385 wp.type <= WindowManager.LayoutParams.LAST_SUB_WINDOW) {
386 if (wp.token == null) {
387 View decor = peekDecorView();
389 wp.token = decor.getWindowToken();
392 if (curTitle == null || curTitle.length() == 0) {
394 if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA) {
396 } else if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_MEDIA_OVERLAY) {
398 } else if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_PANEL) {
400 } else if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_SUB_PANEL) {
402 } else if (wp.type == WindowManager.LayoutParams.TYPE_APPLICATION_ATTACHED_DIALOG) {
405 title=Integer.toString(wp.type);
407 if (mAppName != null) {
408 title += ":" + mAppName;
413 if (wp.token == null) {
414 wp.token = mContainer == null ? mAppToken : mContainer.mAppToken;
416 if ((curTitle == null || curTitle.length() == 0)
417 && mAppName != null) {
418 wp.setTitle(mAppName);
421 if (wp.packageName == null) {
422 wp.packageName = mContext.getPackageName();
424 mWindowManager.addView(view, params);
427 public void updateViewLayout(View view, ViewGroup.LayoutParams params) {
428 mWindowManager.updateViewLayout(view, params);
431 public final void removeView(View view) {
432 mWindowManager.removeView(view);
435 public final void removeViewImmediate(View view) {
436 mWindowManager.removeViewImmediate(view);
439 public Display getDefaultDisplay() {
440 return mDefaultDisplay;
443 private final WindowManager mWindowManager;
445 private final Display mDefaultDisplay;
449 * Return the window manager allowing this Window to display its own
452 * @return WindowManager The ViewManager.
454 public WindowManager getWindowManager() {
455 return mWindowManager;
459 * Set the Callback interface for this window, used to intercept key
460 * events and other dynamic operations in the window.
462 * @param callback The desired Callback interface.
464 public void setCallback(Callback callback) {
465 mCallback = callback;
469 * Return the current Callback interface for this window.
471 public final Callback getCallback() {
476 * Take ownership of this window's surface. The window's view hierarchy
477 * will no longer draw into the surface, though it will otherwise continue
478 * to operate (such as for receiving input events). The given SurfaceHolder
479 * callback will be used to tell you about state changes to the surface.
481 public abstract void takeSurface(SurfaceHolder.Callback2 callback);
484 * Take ownership of this window's InputQueue. The window will no
485 * longer read and dispatch input events from the queue; it is your
486 * responsibility to do so.
488 public abstract void takeInputQueue(InputQueue.Callback callback);
491 * Return whether this window is being displayed with a floating style
492 * (based on the {@link android.R.attr#windowIsFloating} attribute in
495 * @return Returns true if the window is configured to be displayed floating
496 * on top of whatever is behind it.
498 public abstract boolean isFloating();
501 * Set the width and height layout parameters of the window. The default
502 * for both of these is MATCH_PARENT; you can change them to WRAP_CONTENT to
503 * make a window that is not full-screen.
505 * @param width The desired layout width of the window.
506 * @param height The desired layout height of the window.
508 public void setLayout(int width, int height)
510 final WindowManager.LayoutParams attrs = getAttributes();
512 attrs.height = height;
513 if (mCallback != null) {
514 mCallback.onWindowAttributesChanged(attrs);
519 * Set the gravity of the window, as per the Gravity constants. This
520 * controls how the window manager is positioned in the overall window; it
521 * is only useful when using WRAP_CONTENT for the layout width or height.
523 * @param gravity The desired gravity constant.
528 public void setGravity(int gravity)
530 final WindowManager.LayoutParams attrs = getAttributes();
531 attrs.gravity = gravity;
532 if (mCallback != null) {
533 mCallback.onWindowAttributesChanged(attrs);
538 * Set the type of the window, as per the WindowManager.LayoutParams
541 * @param type The new window type (see WindowManager.LayoutParams).
543 public void setType(int type) {
544 final WindowManager.LayoutParams attrs = getAttributes();
546 if (mCallback != null) {
547 mCallback.onWindowAttributesChanged(attrs);
552 * Set the format of window, as per the PixelFormat types. This overrides
553 * the default format that is selected by the Window based on its
554 * window decorations.
556 * @param format The new window format (see PixelFormat). Use
557 * PixelFormat.UNKNOWN to allow the Window to select
562 public void setFormat(int format) {
563 final WindowManager.LayoutParams attrs = getAttributes();
564 if (format != PixelFormat.UNKNOWN) {
565 attrs.format = format;
566 mHaveWindowFormat = true;
568 attrs.format = mDefaultWindowFormat;
569 mHaveWindowFormat = false;
571 if (mCallback != null) {
572 mCallback.onWindowAttributesChanged(attrs);
577 * Specify custom animations to use for the window, as per
578 * {@link WindowManager.LayoutParams#windowAnimations
579 * WindowManager.LayoutParams.windowAnimations}. Providing anything besides
580 * 0 here will override the animations the window would
581 * normally retrieve from its theme.
583 public void setWindowAnimations(int resId) {
584 final WindowManager.LayoutParams attrs = getAttributes();
585 attrs.windowAnimations = resId;
586 if (mCallback != null) {
587 mCallback.onWindowAttributesChanged(attrs);
592 * Specify an explicit soft input mode to use for the window, as per
593 * {@link WindowManager.LayoutParams#softInputMode
594 * WindowManager.LayoutParams.softInputMode}. Providing anything besides
595 * "unspecified" here will override the input mode the window would
596 * normally retrieve from its theme.
598 public void setSoftInputMode(int mode) {
599 final WindowManager.LayoutParams attrs = getAttributes();
600 if (mode != WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED) {
601 attrs.softInputMode = mode;
602 mHasSoftInputMode = true;
604 mHasSoftInputMode = false;
606 if (mCallback != null) {
607 mCallback.onWindowAttributesChanged(attrs);
612 * Convenience function to set the flag bits as specified in flags, as
613 * per {@link #setFlags}.
614 * @param flags The flag bits to be set.
617 public void addFlags(int flags) {
618 setFlags(flags, flags);
622 * Convenience function to clear the flag bits as specified in flags, as
623 * per {@link #setFlags}.
624 * @param flags The flag bits to be cleared.
627 public void clearFlags(int flags) {
632 * Set the flags of the window, as per the
633 * {@link WindowManager.LayoutParams WindowManager.LayoutParams}
636 * <p>Note that some flags must be set before the window decoration is
637 * created (by the first call to
638 * {@link #setContentView(View, android.view.ViewGroup.LayoutParams)} or
639 * {@link #getDecorView()}:
640 * {@link WindowManager.LayoutParams#FLAG_LAYOUT_IN_SCREEN} and
641 * {@link WindowManager.LayoutParams#FLAG_LAYOUT_INSET_DECOR}. These
642 * will be set for you based on the {@link android.R.attr#windowIsFloating}
645 * @param flags The new window flags (see WindowManager.LayoutParams).
646 * @param mask Which of the window flag bits to modify.
648 public void setFlags(int flags, int mask) {
649 final WindowManager.LayoutParams attrs = getAttributes();
650 attrs.flags = (attrs.flags&~mask) | (flags&mask);
651 mForcedWindowFlags |= mask;
652 if (mCallback != null) {
653 mCallback.onWindowAttributesChanged(attrs);
658 * Specify custom window attributes. <strong>PLEASE NOTE:</strong> the
659 * layout params you give here should generally be from values previously
660 * retrieved with {@link #getAttributes()}; you probably do not want to
661 * blindly create and apply your own, since this will blow away any values
662 * set by the framework that you are not interested in.
664 * @param a The new window attributes, which will completely override any
667 public void setAttributes(WindowManager.LayoutParams a) {
668 mWindowAttributes.copyFrom(a);
669 if (mCallback != null) {
670 mCallback.onWindowAttributesChanged(mWindowAttributes);
675 * Retrieve the current window attributes associated with this panel.
677 * @return WindowManager.LayoutParams Either the existing window
678 * attributes object, or a freshly created one if there is none.
680 public final WindowManager.LayoutParams getAttributes() {
681 return mWindowAttributes;
685 * Return the window flags that have been explicitly set by the client,
686 * so will not be modified by {@link #getDecorView}.
688 protected final int getForcedWindowFlags() {
689 return mForcedWindowFlags;
693 * Has the app specified their own soft input mode?
695 protected final boolean hasSoftInputMode() {
696 return mHasSoftInputMode;
700 * Enable extended screen features. This must be called before
701 * setContentView(). May be called as many times as desired as long as it
702 * is before setContentView(). If not called, no extended features
703 * will be available. You can not turn off a feature once it is requested.
704 * You canot use other title features with {@link #FEATURE_CUSTOM_TITLE}.
706 * @param featureId The desired features, defined as constants by Window.
707 * @return The features that are now set.
709 public boolean requestFeature(int featureId) {
710 final int flag = 1<<featureId;
712 mLocalFeatures |= mContainer != null ? (flag&~mContainer.mFeatures) : flag;
713 return (mFeatures&flag) != 0;
716 public final void makeActive() {
717 if (mContainer != null) {
718 if (mContainer.mActiveChild != null) {
719 mContainer.mActiveChild.mIsActive = false;
721 mContainer.mActiveChild = this;
727 public final boolean isActive()
733 * Finds a view that was identified by the id attribute from the XML that
734 * was processed in {@link android.app.Activity#onCreate}. This will
735 * implicitly call {@link #getDecorView} for you, with all of the
736 * associated side-effects.
738 * @return The view if found or null otherwise.
740 public View findViewById(int id) {
741 return getDecorView().findViewById(id);
746 * {@link #setContentView(View, android.view.ViewGroup.LayoutParams)}
747 * to set the screen content from a layout resource. The resource will be
748 * inflated, adding all top-level views to the screen.
750 * @param layoutResID Resource ID to be inflated.
751 * @see #setContentView(View, android.view.ViewGroup.LayoutParams)
753 public abstract void setContentView(int layoutResID);
757 * {@link #setContentView(View, android.view.ViewGroup.LayoutParams)}
758 * set the screen content to an explicit view. This view is placed
759 * directly into the screen's view hierarchy. It can itself be a complex
762 * @param view The desired content to display.
763 * @see #setContentView(View, android.view.ViewGroup.LayoutParams)
765 public abstract void setContentView(View view);
768 * Set the screen content to an explicit view. This view is placed
769 * directly into the screen's view hierarchy. It can itself be a complex
772 * <p>Note that calling this function "locks in" various characteristics
773 * of the window that can not, from this point forward, be changed: the
774 * features that have been requested with {@link #requestFeature(int)},
775 * and certain window flags as described in {@link #setFlags(int, int)}.
777 * @param view The desired content to display.
778 * @param params Layout parameters for the view.
780 public abstract void setContentView(View view, ViewGroup.LayoutParams params);
784 * {@link #setContentView(View, android.view.ViewGroup.LayoutParams)}
785 * to add an additional content view to the screen. Added after any existing
786 * ones in the screen -- existing views are NOT removed.
788 * @param view The desired content to display.
789 * @param params Layout parameters for the view.
791 public abstract void addContentView(View view, ViewGroup.LayoutParams params);
794 * Return the view in this Window that currently has focus, or null if
795 * there are none. Note that this does not look in any containing
798 * @return View The current View with focus or null.
800 public abstract View getCurrentFocus();
803 * Quick access to the {@link LayoutInflater} instance that this Window
804 * retrieved from its Context.
806 * @return LayoutInflater The shared LayoutInflater.
808 public abstract LayoutInflater getLayoutInflater();
810 public abstract void setTitle(CharSequence title);
812 public abstract void setTitleColor(int textColor);
814 public abstract void openPanel(int featureId, KeyEvent event);
816 public abstract void closePanel(int featureId);
818 public abstract void togglePanel(int featureId, KeyEvent event);
820 public abstract boolean performPanelShortcut(int featureId,
824 public abstract boolean performPanelIdentifierAction(int featureId,
828 public abstract void closeAllPanels();
830 public abstract boolean performContextMenuIdentifierAction(int id, int flags);
833 * Should be called when the configuration is changed.
835 * @param newConfig The new configuration.
837 public abstract void onConfigurationChanged(Configuration newConfig);
840 * Change the background of this window to a Drawable resource. Setting the
841 * background to null will make the window be opaque. To make the window
842 * transparent, you can use an empty drawable (for instance a ColorDrawable
843 * with the color 0 or the system drawable android:drawable/empty.)
845 * @param resid The resource identifier of a drawable resource which will be
846 * installed as the new background.
848 public void setBackgroundDrawableResource(int resid)
850 setBackgroundDrawable(mContext.getResources().getDrawable(resid));
854 * Change the background of this window to a custom Drawable. Setting the
855 * background to null will make the window be opaque. To make the window
856 * transparent, you can use an empty drawable (for instance a ColorDrawable
857 * with the color 0 or the system drawable android:drawable/empty.)
859 * @param drawable The new Drawable to use for this window's background.
861 public abstract void setBackgroundDrawable(Drawable drawable);
864 * Set the value for a drawable feature of this window, from a resource
865 * identifier. You must have called requestFeauture(featureId) before
866 * calling this function.
868 * @see android.content.res.Resources#getDrawable(int)
870 * @param featureId The desired drawable feature to change, defined as a
871 * constant by Window.
872 * @param resId Resource identifier of the desired image.
874 public abstract void setFeatureDrawableResource(int featureId, int resId);
877 * Set the value for a drawable feature of this window, from a URI. You
878 * must have called requestFeature(featureId) before calling this
881 * <p>The only URI currently supported is "content:", specifying an image
882 * in a content provider.
884 * @see android.widget.ImageView#setImageURI
886 * @param featureId The desired drawable feature to change. Features are
887 * constants defined by Window.
888 * @param uri The desired URI.
890 public abstract void setFeatureDrawableUri(int featureId, Uri uri);
893 * Set an explicit Drawable value for feature of this window. You must
894 * have called requestFeature(featureId) before calling this function.
896 * @param featureId The desired drawable feature to change.
897 * Features are constants defined by Window.
898 * @param drawable A Drawable object to display.
900 public abstract void setFeatureDrawable(int featureId, Drawable drawable);
903 * Set a custom alpha value for the given drawale feature, controlling how
904 * much the background is visible through it.
906 * @param featureId The desired drawable feature to change.
907 * Features are constants defined by Window.
908 * @param alpha The alpha amount, 0 is completely transparent and 255 is
911 public abstract void setFeatureDrawableAlpha(int featureId, int alpha);
914 * Set the integer value for a feature. The range of the value depends on
915 * the feature being set. For FEATURE_PROGRESSS, it should go from 0 to
916 * 10000. At 10000 the progress is complete and the indicator hidden.
918 * @param featureId The desired feature to change.
919 * Features are constants defined by Window.
920 * @param value The value for the feature. The interpretation of this
921 * value is feature-specific.
923 public abstract void setFeatureInt(int featureId, int value);
926 * Request that key events come to this activity. Use this if your
927 * activity has no views with focus, but the activity still wants
928 * a chance to process key events.
930 public abstract void takeKeyEvents(boolean get);
933 * Used by custom windows, such as Dialog, to pass the key press event
934 * further down the view hierarchy. Application developers should
935 * not need to implement or call this.
938 public abstract boolean superDispatchKeyEvent(KeyEvent event);
941 * Used by custom windows, such as Dialog, to pass the touch screen event
942 * further down the view hierarchy. Application developers should
943 * not need to implement or call this.
946 public abstract boolean superDispatchTouchEvent(MotionEvent event);
949 * Used by custom windows, such as Dialog, to pass the trackball event
950 * further down the view hierarchy. Application developers should
951 * not need to implement or call this.
954 public abstract boolean superDispatchTrackballEvent(MotionEvent event);
957 * Retrieve the top-level window decor view (containing the standard
958 * window frame/decorations and the client's content inside of that), which
959 * can be added as a window to the window manager.
961 * <p><em>Note that calling this function for the first time "locks in"
962 * various window characteristics as described in
963 * {@link #setContentView(View, android.view.ViewGroup.LayoutParams)}.</em></p>
965 * @return Returns the top-level window decor view.
967 public abstract View getDecorView();
970 * Retrieve the current decor view, but only if it has already been created;
971 * otherwise returns null.
973 * @return Returns the top-level window decor or null.
976 public abstract View peekDecorView();
978 public abstract Bundle saveHierarchyState();
980 public abstract void restoreHierarchyState(Bundle savedInstanceState);
982 protected abstract void onActive();
985 * Return the feature bits that are enabled. This is the set of features
986 * that were given to requestFeature(), and are being handled by this
987 * Window itself or its container. That is, it is the set of
988 * requested features that you can actually use.
990 * <p>To do: add a public version of this API that allows you to check for
991 * features by their feature ID.
993 * @return int The feature bits.
995 protected final int getFeatures()
1001 * Return the feature bits that are being implemented by this Window.
1002 * This is the set of features that were given to requestFeature(), and are
1003 * being handled by only this Window itself, not by its containers.
1005 * @return int The feature bits.
1007 protected final int getLocalFeatures()
1009 return mLocalFeatures;
1013 * Set the default format of window, as per the PixelFormat types. This
1014 * is the format that will be used unless the client specifies in explicit
1015 * format with setFormat();
1017 * @param format The new window format (see PixelFormat).
1022 protected void setDefaultWindowFormat(int format) {
1023 mDefaultWindowFormat = format;
1024 if (!mHaveWindowFormat) {
1025 final WindowManager.LayoutParams attrs = getAttributes();
1026 attrs.format = format;
1027 if (mCallback != null) {
1028 mCallback.onWindowAttributesChanged(attrs);
1033 public abstract void setChildDrawable(int featureId, Drawable drawable);
1035 public abstract void setChildInt(int featureId, int value);
1038 * Is a keypress one of the defined shortcut keys for this window.
1039 * @param keyCode the key code from {@link android.view.KeyEvent} to check.
1040 * @param event the {@link android.view.KeyEvent} to use to help check.
1042 public abstract boolean isShortcutKey(int keyCode, KeyEvent event);
1045 * @see android.app.Activity#setVolumeControlStream(int)
1047 public abstract void setVolumeControlStream(int streamType);
1050 * @see android.app.Activity#getVolumeControlStream()
1052 public abstract int getVolumeControlStream();