Android example source code file (Dialog.java)
The Dialog.java Android example source code/*
* Copyright (C) 2006 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.app;
import com.android.internal.policy.PolicyManager;
import android.content.Context;
import android.content.DialogInterface;
import android.content.ComponentName;
import android.content.ContextWrapper;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.ContextMenu;
import android.view.ContextThemeWrapper;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewConfiguration;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnCreateContextMenuListener;
import android.view.ViewGroup.LayoutParams;
import android.view.accessibility.AccessibilityEvent;
import java.lang.ref.WeakReference;
/**
* Base class for Dialogs.
*
* <p>Note: Activities provide a facility to manage the creation, saving and
* restoring of dialogs. See {@link Activity#onCreateDialog(int)},
* {@link Activity#onPrepareDialog(int, Dialog)},
* {@link Activity#showDialog(int)}, and {@link Activity#dismissDialog(int)}. If
* these methods are used, {@link #getOwnerActivity()} will return the Activity
* that managed this dialog.
*
* <p>Often you will want to have a Dialog display on top of the current
* input method, because there is no reason for it to accept text. You can
* do this by setting the {@link WindowManager.LayoutParams#FLAG_ALT_FOCUSABLE_IM
* WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM} window flag (assuming
* your Dialog takes input focus, as it the default) with the following code:
*
* <pre>
* getWindow().setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
* WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
* </pre>
*/
public class Dialog implements DialogInterface, Window.Callback,
KeyEvent.Callback, OnCreateContextMenuListener {
private Activity mOwnerActivity;
final Context mContext;
final WindowManager mWindowManager;
Window mWindow;
View mDecor;
/**
* This field should be made private, so it is hidden from the SDK.
* {@hide}
*/
protected boolean mCancelable = true;
private Message mCancelMessage;
private Message mDismissMessage;
private Message mShowMessage;
/**
* Whether to cancel the dialog when a touch is received outside of the
* window's bounds.
*/
private boolean mCanceledOnTouchOutside = false;
private OnKeyListener mOnKeyListener;
private boolean mCreated = false;
private boolean mShowing = false;
private final Thread mUiThread;
private final Handler mHandler = new Handler();
private static final int DISMISS = 0x43;
private static final int CANCEL = 0x44;
private static final int SHOW = 0x45;
private Handler mListenersHandler;
private final Runnable mDismissAction = new Runnable() {
public void run() {
dismissDialog();
}
};
/**
* Create a Dialog window that uses the default dialog frame style.
*
* @param context The Context the Dialog is to run it. In particular, it
* uses the window manager and theme in this context to
* present its UI.
*/
public Dialog(Context context) {
this(context, 0);
}
/**
* Create a Dialog window that uses a custom dialog style.
*
* @param context The Context in which the Dialog should run. In particular, it
* uses the window manager and theme from this context to
* present its UI.
* @param theme A style resource describing the theme to use for the
* window. See <a href="{@docRoot}guide/topics/resources/available-resources.html#stylesandthemes">Style
* and Theme Resources</a> for more information about defining and using
* styles. This theme is applied on top of the current theme in
* <var>context. If 0, the default dialog theme will be used.
*/
public Dialog(Context context, int theme) {
mContext = new ContextThemeWrapper(
context, theme == 0 ? com.android.internal.R.style.Theme_Dialog : theme);
mWindowManager = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);
Window w = PolicyManager.makeNewWindow(mContext);
mWindow = w;
w.setCallback(this);
w.setWindowManager(mWindowManager, null, null);
w.setGravity(Gravity.CENTER);
mUiThread = Thread.currentThread();
mListenersHandler = new ListenersHandler(this);
}
/**
* @deprecated
* @hide
*/
@Deprecated
protected Dialog(Context context, boolean cancelable,
Message cancelCallback) {
this(context);
mCancelable = cancelable;
mCancelMessage = cancelCallback;
}
protected Dialog(Context context, boolean cancelable,
OnCancelListener cancelListener) {
this(context);
mCancelable = cancelable;
setOnCancelListener(cancelListener);
}
/**
* Retrieve the Context this Dialog is running in.
*
* @return Context The Context that was supplied to the constructor.
*/
public final Context getContext() {
return mContext;
}
/**
* Sets the Activity that owns this dialog. An example use: This Dialog will
* use the suggested volume control stream of the Activity.
*
* @param activity The Activity that owns this dialog.
*/
public final void setOwnerActivity(Activity activity) {
mOwnerActivity = activity;
getWindow().setVolumeControlStream(mOwnerActivity.getVolumeControlStream());
}
/**
* Returns the Activity that owns this Dialog. For example, if
* {@link Activity#showDialog(int)} is used to show this Dialog, that
* Activity will be the owner (by default). Depending on how this dialog was
* created, this may return null.
*
* @return The Activity that owns this Dialog.
*/
public final Activity getOwnerActivity() {
return mOwnerActivity;
}
/**
* @return Whether the dialog is currently showing.
*/
public boolean isShowing() {
return mShowing;
}
/**
* Start the dialog and display it on screen. The window is placed in the
* application layer and opaque. Note that you should not override this
* method to do initialization when the dialog is shown, instead implement
* that in {@link #onStart}.
*/
public void show() {
if (mShowing) {
if (mDecor != null) {
mDecor.setVisibility(View.VISIBLE);
}
return;
}
if (!mCreated) {
dispatchOnCreate(null);
}
onStart();
mDecor = mWindow.getDecorView();
WindowManager.LayoutParams l = mWindow.getAttributes();
if ((l.softInputMode
& WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION) == 0) {
WindowManager.LayoutParams nl = new WindowManager.LayoutParams();
nl.copyFrom(l);
nl.softInputMode |=
WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION;
l = nl;
}
try {
mWindowManager.addView(mDecor, l);
mShowing = true;
sendShowMessage();
} finally {
}
}
/**
* Hide the dialog, but do not dismiss it.
*/
public void hide() {
if (mDecor != null) {
mDecor.setVisibility(View.GONE);
}
}
/**
* Dismiss this dialog, removing it from the screen. This method can be
* invoked safely from any thread. Note that you should not override this
* method to do cleanup when the dialog is dismissed, instead implement
* that in {@link #onStop}.
*/
public void dismiss() {
if (Thread.currentThread() != mUiThread) {
mHandler.post(mDismissAction);
} else {
mDismissAction.run();
}
}
private void dismissDialog() {
if (mDecor == null || !mShowing) {
return;
}
try {
mWindowManager.removeView(mDecor);
} finally {
mDecor = null;
mWindow.closeAllPanels();
onStop();
mShowing = false;
sendDismissMessage();
}
}
private void sendDismissMessage() {
if (mDismissMessage != null) {
// Obtain a new message so this dialog can be re-used
Message.obtain(mDismissMessage).sendToTarget();
}
}
private void sendShowMessage() {
if (mShowMessage != null) {
// Obtain a new message so this dialog can be re-used
Message.obtain(mShowMessage).sendToTarget();
}
}
// internal method to make sure mcreated is set properly without requiring
// users to call through to super in onCreate
void dispatchOnCreate(Bundle savedInstanceState) {
if (!mCreated) {
onCreate(savedInstanceState);
mCreated = true;
}
}
/**
* Similar to {@link Activity#onCreate}, you should initialized your dialog
* in this method, including calling {@link #setContentView}.
* @param savedInstanceState If this dialog is being reinitalized after a
* the hosting activity was previously shut down, holds the result from
* the most recent call to {@link #onSaveInstanceState}, or null if this
* is the first time.
*/
protected void onCreate(Bundle savedInstanceState) {
}
/**
* Called when the dialog is starting.
*/
protected void onStart() {
}
/**
* Called to tell you that you're stopping.
*/
protected void onStop() {
}
private static final String DIALOG_SHOWING_TAG = "android:dialogShowing";
private static final String DIALOG_HIERARCHY_TAG = "android:dialogHierarchy";
/**
* Saves the state of the dialog into a bundle.
*
* The default implementation saves the state of its view hierarchy, so you'll
* likely want to call through to super if you override this to save additional
* state.
* @return A bundle with the state of the dialog.
*/
public Bundle onSaveInstanceState() {
Bundle bundle = new Bundle();
bundle.putBoolean(DIALOG_SHOWING_TAG, mShowing);
if (mCreated) {
bundle.putBundle(DIALOG_HIERARCHY_TAG, mWindow.saveHierarchyState());
}
return bundle;
}
/**
* Restore the state of the dialog from a previously saved bundle.
*
* The default implementation restores the state of the dialog's view
* hierarchy that was saved in the default implementation of {@link #onSaveInstanceState()},
* so be sure to call through to super when overriding unless you want to
* do all restoring of state yourself.
* @param savedInstanceState The state of the dialog previously saved by
* {@link #onSaveInstanceState()}.
*/
public void onRestoreInstanceState(Bundle savedInstanceState) {
final Bundle dialogHierarchyState = savedInstanceState.getBundle(DIALOG_HIERARCHY_TAG);
if (dialogHierarchyState == null) {
// dialog has never been shown, or onCreated, nothing to restore.
return;
}
dispatchOnCreate(savedInstanceState);
mWindow.restoreHierarchyState(dialogHierarchyState);
if (savedInstanceState.getBoolean(DIALOG_SHOWING_TAG)) {
show();
}
}
/**
* Retrieve the current Window for the activity. This can be used to
* directly access parts of the Window API that are not available
* through Activity/Screen.
*
* @return Window The current window, or null if the activity is not
* visual.
*/
public Window getWindow() {
return mWindow;
}
/**
* Call {@link android.view.Window#getCurrentFocus} on the
* Window if this Activity to return the currently focused view.
*
* @return View The current View with focus or null.
*
* @see #getWindow
* @see android.view.Window#getCurrentFocus
*/
public View getCurrentFocus() {
return mWindow != null ? mWindow.getCurrentFocus() : null;
}
/**
* Finds a view that was identified by the id attribute from the XML that
* was processed in {@link #onStart}.
*
* @param id the identifier of the view to find
* @return The view if found or null otherwise.
*/
public View findViewById(int id) {
return mWindow.findViewById(id);
}
/**
* Set the screen content from a layout resource. The resource will be
* inflated, adding all top-level views to the screen.
*
* @param layoutResID Resource ID to be inflated.
*/
public void setContentView(int layoutResID) {
mWindow.setContentView(layoutResID);
}
/**
* Set the screen content to an explicit view. This view is placed
* directly into the screen's view hierarchy. It can itself be a complex
* view hierarhcy.
*
* @param view The desired content to display.
*/
public void setContentView(View view) {
mWindow.setContentView(view);
}
/**
* Set the screen content to an explicit view. This view is placed
* directly into the screen's view hierarchy. It can itself be a complex
* view hierarhcy.
*
* @param view The desired content to display.
* @param params Layout parameters for the view.
*/
public void setContentView(View view, ViewGroup.LayoutParams params) {
mWindow.setContentView(view, params);
}
/**
* Add an additional content view to the screen. Added after any existing
* ones in the screen -- existing views are NOT removed.
*
* @param view The desired content to display.
* @param params Layout parameters for the view.
*/
public void addContentView(View view, ViewGroup.LayoutParams params) {
mWindow.addContentView(view, params);
}
/**
* Set the title text for this dialog's window.
*
* @param title The new text to display in the title.
*/
public void setTitle(CharSequence title) {
mWindow.setTitle(title);
mWindow.getAttributes().setTitle(title);
}
/**
* Set the title text for this dialog's window. The text is retrieved
* from the resources with the supplied identifier.
*
* @param titleId the title's text resource identifier
*/
public void setTitle(int titleId) {
setTitle(mContext.getText(titleId));
}
/**
* A key was pressed down.
*
* <p>If the focused view didn't want this event, this method is called.
*
* <p>The default implementation consumed the KEYCODE_BACK to later
* handle it in {@link #onKeyUp}.
*
* @see #onKeyUp
* @see android.view.KeyEvent
*/
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
event.startTracking();
return true;
}
return false;
}
/**
* Default implementation of {@link KeyEvent.Callback#onKeyLongPress(int, KeyEvent)
* KeyEvent.Callback.onKeyLongPress()}: always returns false (doesn't handle
* the event).
*/
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
return false;
}
/**
* A key was released.
*
* <p>The default implementation handles KEYCODE_BACK to close the
* dialog.
*
* @see #onKeyDown
* @see KeyEvent
*/
public boolean onKeyUp(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.isTracking()
&& !event.isCanceled()) {
onBackPressed();
return true;
}
return false;
}
/**
* Default implementation of {@link KeyEvent.Callback#onKeyMultiple(int, int, KeyEvent)
* KeyEvent.Callback.onKeyMultiple()}: always returns false (doesn't handle
* the event).
*/
public boolean onKeyMultiple(int keyCode, int repeatCount, KeyEvent event) {
return false;
}
/**
* Called when the dialog has detected the user's press of the back
* key. The default implementation simply cancels the dialog (only if
* it is cancelable), but you can override this to do whatever you want.
*/
public void onBackPressed() {
if (mCancelable) {
cancel();
}
}
/**
* Called when a touch screen event was not handled by any of the views
* under it. This is most useful to process touch events that happen outside
* of your window bounds, where there is no view to receive it.
*
* @param event The touch screen event being processed.
* @return Return true if you have consumed the event, false if you haven't.
* The default implementation will cancel the dialog when a touch
* happens outside of the window bounds.
*/
public boolean onTouchEvent(MotionEvent event) {
if (mCancelable && mCanceledOnTouchOutside && event.getAction() == MotionEvent.ACTION_DOWN
&& isOutOfBounds(event)) {
cancel();
return true;
}
return false;
}
private boolean isOutOfBounds(MotionEvent event) {
final int x = (int) event.getX();
final int y = (int) event.getY();
final int slop = ViewConfiguration.get(mContext).getScaledWindowTouchSlop();
final View decorView = getWindow().getDecorView();
return (x < -slop) || (y < -slop)
|| (x > (decorView.getWidth()+slop))
|| (y > (decorView.getHeight()+slop));
}
/**
* Called when the trackball was moved and not handled by any of the
* views inside of the activity. So, for example, if the trackball moves
* while focus is on a button, you will receive a call here because
* buttons do not normally do anything with trackball events. The call
* here happens <em>before trackball movements are converted to
* DPAD key events, which then get sent back to the view hierarchy, and
* will be processed at the point for things like focus navigation.
*
* @param event The trackball event being processed.
*
* @return Return true if you have consumed the event, false if you haven't.
* The default implementation always returns false.
*/
public boolean onTrackballEvent(MotionEvent event) {
return false;
}
public void onWindowAttributesChanged(WindowManager.LayoutParams params) {
if (mDecor != null) {
mWindowManager.updateViewLayout(mDecor, params);
}
}
public void onContentChanged() {
}
public void onWindowFocusChanged(boolean hasFocus) {
}
public void onAttachedToWindow() {
}
public void onDetachedFromWindow() {
}
/**
* Called to process key events. You can override this to intercept all
* key events before they are dispatched to the window. Be sure to call
* this implementation for key events that should be handled normally.
*
* @param event The key event.
*
* @return boolean Return true if this event was consumed.
*/
public boolean dispatchKeyEvent(KeyEvent event) {
if ((mOnKeyListener != null) && (mOnKeyListener.onKey(this, event.getKeyCode(), event))) {
return true;
}
if (mWindow.superDispatchKeyEvent(event)) {
return true;
}
return event.dispatch(this, mDecor != null
? mDecor.getKeyDispatcherState() : null, this);
}
/**
* Called to process touch screen events. You can override this to
* intercept all touch screen events before they are dispatched to the
* window. Be sure to call this implementation for touch screen events
* that should be handled normally.
*
* @param ev The touch screen event.
*
* @return boolean Return true if this event was consumed.
*/
public boolean dispatchTouchEvent(MotionEvent ev) {
if (mWindow.superDispatchTouchEvent(ev)) {
return true;
}
return onTouchEvent(ev);
}
/**
* Called to process trackball events. You can override this to
* intercept all trackball events before they are dispatched to the
* window. Be sure to call this implementation for trackball events
* that should be handled normally.
*
* @param ev The trackball event.
*
* @return boolean Return true if this event was consumed.
*/
public boolean dispatchTrackballEvent(MotionEvent ev) {
if (mWindow.superDispatchTrackballEvent(ev)) {
return true;
}
return onTrackballEvent(ev);
}
public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) {
event.setClassName(getClass().getName());
event.setPackageName(mContext.getPackageName());
LayoutParams params = getWindow().getAttributes();
boolean isFullScreen = (params.width == LayoutParams.MATCH_PARENT) &&
(params.height == LayoutParams.MATCH_PARENT);
event.setFullScreen(isFullScreen);
return false;
}
/**
* @see Activity#onCreatePanelView(int)
*/
public View onCreatePanelView(int featureId) {
return null;
}
/**
* @see Activity#onCreatePanelMenu(int, Menu)
*/
public boolean onCreatePanelMenu(int featureId, Menu menu) {
if (featureId == Window.FEATURE_OPTIONS_PANEL) {
return onCreateOptionsMenu(menu);
}
return false;
}
/**
* @see Activity#onPreparePanel(int, View, Menu)
*/
public boolean onPreparePanel(int featureId, View view, Menu menu) {
if (featureId == Window.FEATURE_OPTIONS_PANEL && menu != null) {
boolean goforit = onPrepareOptionsMenu(menu);
return goforit && menu.hasVisibleItems();
}
return true;
}
/**
* @see Activity#onMenuOpened(int, Menu)
*/
public boolean onMenuOpened(int featureId, Menu menu) {
return true;
}
/**
* @see Activity#onMenuItemSelected(int, MenuItem)
*/
public boolean onMenuItemSelected(int featureId, MenuItem item) {
return false;
}
/**
* @see Activity#onPanelClosed(int, Menu)
*/
public void onPanelClosed(int featureId, Menu menu) {
}
/**
* It is usually safe to proxy this call to the owner activity's
* {@link Activity#onCreateOptionsMenu(Menu)} if the client desires the same
* menu for this Dialog.
*
* @see Activity#onCreateOptionsMenu(Menu)
* @see #getOwnerActivity()
*/
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
/**
* It is usually safe to proxy this call to the owner activity's
* {@link Activity#onPrepareOptionsMenu(Menu)} if the client desires the
* same menu for this Dialog.
*
* @see Activity#onPrepareOptionsMenu(Menu)
* @see #getOwnerActivity()
*/
public boolean onPrepareOptionsMenu(Menu menu) {
return true;
}
/**
* @see Activity#onOptionsItemSelected(MenuItem)
*/
public boolean onOptionsItemSelected(MenuItem item) {
return false;
}
/**
* @see Activity#onOptionsMenuClosed(Menu)
*/
public void onOptionsMenuClosed(Menu menu) {
}
/**
* @see Activity#openOptionsMenu()
*/
public void openOptionsMenu() {
mWindow.openPanel(Window.FEATURE_OPTIONS_PANEL, null);
}
/**
* @see Activity#closeOptionsMenu()
*/
public void closeOptionsMenu() {
mWindow.closePanel(Window.FEATURE_OPTIONS_PANEL);
}
/**
* @see Activity#onCreateContextMenu(ContextMenu, View, ContextMenuInfo)
*/
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
}
/**
* @see Activity#registerForContextMenu(View)
*/
public void registerForContextMenu(View view) {
view.setOnCreateContextMenuListener(this);
}
/**
* @see Activity#unregisterForContextMenu(View)
*/
public void unregisterForContextMenu(View view) {
view.setOnCreateContextMenuListener(null);
}
/**
* @see Activity#openContextMenu(View)
*/
public void openContextMenu(View view) {
view.showContextMenu();
}
/**
* @see Activity#onContextItemSelected(MenuItem)
*/
public boolean onContextItemSelected(MenuItem item) {
return false;
}
/**
* @see Activity#onContextMenuClosed(Menu)
*/
public void onContextMenuClosed(Menu menu) {
}
/**
* This hook is called when the user signals the desire to start a search.
*/
public boolean onSearchRequested() {
final SearchManager searchManager = (SearchManager) mContext
.getSystemService(Context.SEARCH_SERVICE);
// associate search with owner activity
final ComponentName appName = getAssociatedActivity();
if (appName != null) {
searchManager.startSearch(null, false, appName, null, false);
dismiss();
return true;
} else {
return false;
}
}
/**
* @return The activity associated with this dialog, or null if there is no assocaited activity.
*/
private ComponentName getAssociatedActivity() {
Activity activity = mOwnerActivity;
Context context = getContext();
while (activity == null && context != null) {
if (context instanceof Activity) {
activity = (Activity) context; // found it!
} else {
context = (context instanceof ContextWrapper) ?
((ContextWrapper) context).getBaseContext() : // unwrap one level
null; // done
}
}
return activity == null ? null : activity.getComponentName();
}
/**
* Request that key events come to this dialog. Use this if your
* dialog has no views with focus, but the dialog still wants
* a chance to process key events.
*
* @param get true if the dialog should receive key events, false otherwise
* @see android.view.Window#takeKeyEvents
*/
public void takeKeyEvents(boolean get) {
mWindow.takeKeyEvents(get);
}
/**
* Enable extended window features. This is a convenience for calling
* {@link android.view.Window#requestFeature getWindow().requestFeature()}.
*
* @param featureId The desired feature as defined in
* {@link android.view.Window}.
* @return Returns true if the requested feature is supported and now
* enabled.
*
* @see android.view.Window#requestFeature
*/
public final boolean requestWindowFeature(int featureId) {
return getWindow().requestFeature(featureId);
}
/**
* Convenience for calling
* {@link android.view.Window#setFeatureDrawableResource}.
*/
public final void setFeatureDrawableResource(int featureId, int resId) {
getWindow().setFeatureDrawableResource(featureId, resId);
}
/**
* Convenience for calling
* {@link android.view.Window#setFeatureDrawableUri}.
*/
public final void setFeatureDrawableUri(int featureId, Uri uri) {
getWindow().setFeatureDrawableUri(featureId, uri);
}
/**
* Convenience for calling
* {@link android.view.Window#setFeatureDrawable(int, Drawable)}.
*/
public final void setFeatureDrawable(int featureId, Drawable drawable) {
getWindow().setFeatureDrawable(featureId, drawable);
}
/**
* Convenience for calling
* {@link android.view.Window#setFeatureDrawableAlpha}.
*/
public final void setFeatureDrawableAlpha(int featureId, int alpha) {
getWindow().setFeatureDrawableAlpha(featureId, alpha);
}
public LayoutInflater getLayoutInflater() {
return getWindow().getLayoutInflater();
}
/**
* Sets whether this dialog is cancelable with the
* {@link KeyEvent#KEYCODE_BACK BACK} key.
*/
public void setCancelable(boolean flag) {
mCancelable = flag;
}
/**
* Sets whether this dialog is canceled when touched outside the window's
* bounds. If setting to true, the dialog is set to be cancelable if not
* already set.
*
* @param cancel Whether the dialog should be canceled when touched outside
* the window.
*/
public void setCanceledOnTouchOutside(boolean cancel) {
if (cancel && !mCancelable) {
mCancelable = true;
}
mCanceledOnTouchOutside = cancel;
}
/**
* Cancel the dialog. This is essentially the same as calling {@link #dismiss()}, but it will
* also call your {@link DialogInterface.OnCancelListener} (if registered).
*/
public void cancel() {
if (mCancelMessage != null) {
// Obtain a new message so this dialog can be re-used
Message.obtain(mCancelMessage).sendToTarget();
}
dismiss();
}
/**
* Set a listener to be invoked when the dialog is canceled.
* <p>
* This will only be invoked when the dialog is canceled, if the creator
* needs to know when it is dismissed in general, use
* {@link #setOnDismissListener}.
*
* @param listener The {@link DialogInterface.OnCancelListener} to use.
*/
public void setOnCancelListener(final OnCancelListener listener) {
if (listener != null) {
mCancelMessage = mListenersHandler.obtainMessage(CANCEL, listener);
} else {
mCancelMessage = null;
}
}
/**
* Set a message to be sent when the dialog is canceled.
* @param msg The msg to send when the dialog is canceled.
* @see #setOnCancelListener(android.content.DialogInterface.OnCancelListener)
*/
public void setCancelMessage(final Message msg) {
mCancelMessage = msg;
}
/**
* Set a listener to be invoked when the dialog is dismissed.
* @param listener The {@link DialogInterface.OnDismissListener} to use.
*/
public void setOnDismissListener(final OnDismissListener listener) {
if (listener != null) {
mDismissMessage = mListenersHandler.obtainMessage(DISMISS, listener);
} else {
mDismissMessage = null;
}
}
/**
* Sets a listener to be invoked when the dialog is shown.
* @param listener The {@link DialogInterface.OnShowListener} to use.
*/
public void setOnShowListener(OnShowListener listener) {
if (listener != null) {
mShowMessage = mListenersHandler.obtainMessage(SHOW, listener);
} else {
mShowMessage = null;
}
}
/**
* Set a message to be sent when the dialog is dismissed.
* @param msg The msg to send when the dialog is dismissed.
*/
public void setDismissMessage(final Message msg) {
mDismissMessage = msg;
}
/**
* By default, this will use the owner Activity's suggested stream type.
*
* @see Activity#setVolumeControlStream(int)
* @see #setOwnerActivity(Activity)
*/
public final void setVolumeControlStream(int streamType) {
getWindow().setVolumeControlStream(streamType);
}
/**
* @see Activity#getVolumeControlStream()
*/
public final int getVolumeControlStream() {
return getWindow().getVolumeControlStream();
}
/**
* Sets the callback that will be called if a key is dispatched to the dialog.
*/
public void setOnKeyListener(final OnKeyListener onKeyListener) {
mOnKeyListener = onKeyListener;
}
private static final class ListenersHandler extends Handler {
private WeakReference<DialogInterface> mDialog;
public ListenersHandler(Dialog dialog) {
mDialog = new WeakReference<DialogInterface>(dialog);
}
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case DISMISS:
((OnDismissListener) msg.obj).onDismiss(mDialog.get());
break;
case CANCEL:
((OnCancelListener) msg.obj).onCancel(mDialog.get());
break;
case SHOW:
((OnShowListener) msg.obj).onShow(mDialog.get());
break;
}
}
}
}
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