package android.widget;
import android.annotation.StringRes;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.database.DataSetObserver;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.ActionProvider;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnGlobalLayoutListener;
import android.view.accessibility.AccessibilityNodeInfo;
import android.widget.ActivityChooserModel.ActivityChooserModelClient;
import com.android.internal.R;
import com.android.internal.view.menu.ShowableListMenu;
public class ActivityChooserView extends ViewGroup implements ActivityChooserModelClient {
private static final String LOG_TAG = "ActivityChooserView";
private final ActivityChooserViewAdapter mAdapter;
private final Callbacks mCallbacks;
private final LinearLayout mActivityChooserContent;
private final Drawable mActivityChooserContentBackground;
private final FrameLayout mExpandActivityOverflowButton;
private final ImageView mExpandActivityOverflowButtonImage;
private final FrameLayout mDefaultActivityButton;
private final ImageView mDefaultActivityButtonImage;
private final int mListPopupMaxWidth;
ActionProvider mProvider;
private final DataSetObserver mModelDataSetOberver = new DataSetObserver() {
@Override
public void onChanged() {
super.onChanged();
mAdapter.notifyDataSetChanged();
}
@Override
public void onInvalidated() {
super.onInvalidated();
mAdapter.notifyDataSetInvalidated();
}
};
private final OnGlobalLayoutListener mOnGlobalLayoutListener = new OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
if (isShowingPopup()) {
if (!isShown()) {
getListPopupWindow().dismiss();
} else {
getListPopupWindow().show();
if (mProvider != null) {
mProvider.subUiVisibilityChanged(true);
}
}
}
}
};
private ListPopupWindow mListPopupWindow;
private PopupWindow.OnDismissListener mOnDismissListener;
private boolean mIsSelectingDefaultActivity;
private int mInitialActivityCount = ActivityChooserViewAdapter.MAX_ACTIVITY_COUNT_DEFAULT;
private boolean mIsAttachedToWindow;
private int mDefaultActionButtonContentDescription;
public ActivityChooserView(Context context) {
this(context, null);
}
public ActivityChooserView(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
public ActivityChooserView(Context context, AttributeSet attrs, int defStyleAttr) {
this(context, attrs, defStyleAttr, 0);
}
public ActivityChooserView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
TypedArray attributesArray = context.obtainStyledAttributes(attrs,
R.styleable.ActivityChooserView, defStyleAttr, defStyleRes);
mInitialActivityCount = attributesArray.getInt(
R.styleable.ActivityChooserView_initialActivityCount,
ActivityChooserViewAdapter.MAX_ACTIVITY_COUNT_DEFAULT);
Drawable expandActivityOverflowButtonDrawable = attributesArray.getDrawable(
R.styleable.ActivityChooserView_expandActivityOverflowButtonDrawable);
attributesArray.recycle();
LayoutInflater inflater = LayoutInflater.from(mContext);
inflater.inflate(R.layout.activity_chooser_view, this, true);
mCallbacks = new Callbacks();
mActivityChooserContent = (LinearLayout) findViewById(R.id.activity_chooser_view_content);
mActivityChooserContentBackground = mActivityChooserContent.getBackground();
mDefaultActivityButton = (FrameLayout) findViewById(R.id.default_activity_button);
mDefaultActivityButton.setOnClickListener(mCallbacks);
mDefaultActivityButton.setOnLongClickListener(mCallbacks);
mDefaultActivityButtonImage = mDefaultActivityButton.findViewById(R.id.image);
final FrameLayout expandButton = (FrameLayout) findViewById(R.id.expand_activities_button);
expandButton.setOnClickListener(mCallbacks);
expandButton.setAccessibilityDelegate(new AccessibilityDelegate() {
@Override
public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
super.onInitializeAccessibilityNodeInfo(host, info);
info.setCanOpenPopup(true);
}
});
expandButton.setOnTouchListener(new ForwardingListener(expandButton) {
@Override
public ShowableListMenu getPopup() {
return getListPopupWindow();
}
@Override
protected boolean onForwardingStarted() {
showPopup();
return true;
}
@Override
protected boolean onForwardingStopped() {
dismissPopup();
return true;
}
});
mExpandActivityOverflowButton = expandButton;
mExpandActivityOverflowButtonImage =
expandButton.findViewById(R.id.image);
mExpandActivityOverflowButtonImage.setImageDrawable(expandActivityOverflowButtonDrawable);
mAdapter = new ActivityChooserViewAdapter();
mAdapter.registerDataSetObserver(new DataSetObserver() {
@Override
public void onChanged() {
super.onChanged();
updateAppearance();
}
});
Resources resources = context.getResources();
mListPopupMaxWidth = Math.max(resources.getDisplayMetrics().widthPixels / 2,
resources.getDimensionPixelSize(com.android.internal.R.dimen.config_prefDialogWidth));
}
public void setActivityChooserModel(ActivityChooserModel dataModel) {
mAdapter.setDataModel(dataModel);
if (isShowingPopup()) {
dismissPopup();
showPopup();
}
}
public void setExpandActivityOverflowButtonDrawable(Drawable drawable) {
mExpandActivityOverflowButtonImage.setImageDrawable(drawable);
}
public void setExpandActivityOverflowButtonContentDescription(@StringRes int resourceId) {
CharSequence contentDescription = mContext.getString(resourceId);
mExpandActivityOverflowButtonImage.setContentDescription(contentDescription);
}
public void setProvider(ActionProvider provider) {
mProvider = provider;
}
public boolean showPopup() {
if (isShowingPopup() || !mIsAttachedToWindow) {
return false;
}
mIsSelectingDefaultActivity = false;
showPopupUnchecked(mInitialActivityCount);
return true;
}
private void showPopupUnchecked(int maxActivityCount) {
if (mAdapter.getDataModel() == null) {
throw new IllegalStateException("No data model. Did you call #setDataModel?");
}
getViewTreeObserver().addOnGlobalLayoutListener(mOnGlobalLayoutListener);
final boolean defaultActivityButtonShown =
mDefaultActivityButton.getVisibility() == VISIBLE;
final int activityCount = mAdapter.getActivityCount();
final int maxActivityCountOffset = defaultActivityButtonShown ? 1 : 0;
if (maxActivityCount != ActivityChooserViewAdapter.MAX_ACTIVITY_COUNT_UNLIMITED
&& activityCount > maxActivityCount + maxActivityCountOffset) {
mAdapter.setShowFooterView(true);
mAdapter.setMaxActivityCount(maxActivityCount - 1);
} else {
mAdapter.setShowFooterView(false);
mAdapter.setMaxActivityCount(maxActivityCount);
}
ListPopupWindow popupWindow = getListPopupWindow();
if (!popupWindow.isShowing()) {
if (mIsSelectingDefaultActivity || !defaultActivityButtonShown) {
mAdapter.setShowDefaultActivity(true, defaultActivityButtonShown);
} else {
mAdapter.setShowDefaultActivity(false, false);
}
final int contentWidth = Math.min(mAdapter.measureContentWidth(), mListPopupMaxWidth);
popupWindow.setContentWidth(contentWidth);
popupWindow.show();
if (mProvider != null) {
mProvider.subUiVisibilityChanged(true);
}
popupWindow.getListView().setContentDescription(mContext.getString(
R.string.activitychooserview_choose_application));
popupWindow.getListView().setSelector(new ColorDrawable(Color.TRANSPARENT));
}
}
public boolean dismissPopup() {
if (isShowingPopup()) {
getListPopupWindow().dismiss();
ViewTreeObserver viewTreeObserver = getViewTreeObserver();
if (viewTreeObserver.isAlive()) {
viewTreeObserver.removeOnGlobalLayoutListener(mOnGlobalLayoutListener);
}
}
return true;
}
public boolean isShowingPopup() {
return getListPopupWindow().isShowing();
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
ActivityChooserModel dataModel = mAdapter.getDataModel();
if (dataModel != null) {
dataModel.registerObserver(mModelDataSetOberver);
}
mIsAttachedToWindow = true;
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
ActivityChooserModel dataModel = mAdapter.getDataModel();
if (dataModel != null) {
dataModel.unregisterObserver(mModelDataSetOberver);
}
ViewTreeObserver viewTreeObserver = getViewTreeObserver();
if (viewTreeObserver.isAlive()) {
viewTreeObserver.removeOnGlobalLayoutListener(mOnGlobalLayoutListener);
}
if (isShowingPopup()) {
dismissPopup();
}
mIsAttachedToWindow = false;
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
View child = mActivityChooserContent;
if (mDefaultActivityButton.getVisibility() != VISIBLE) {
heightMeasureSpec = MeasureSpec.makeMeasureSpec(MeasureSpec.getSize(heightMeasureSpec),
MeasureSpec.EXACTLY);
}
measureChild(child, widthMeasureSpec, heightMeasureSpec);
setMeasuredDimension(child.getMeasuredWidth(), child.getMeasuredHeight());
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
mActivityChooserContent.layout(0, 0, right - left, bottom - top);
if (!isShowingPopup()) {
dismissPopup();
}
}
public ActivityChooserModel getDataModel() {
return mAdapter.getDataModel();
}
public void setOnDismissListener(PopupWindow.OnDismissListener listener) {
mOnDismissListener = listener;
}
public void setInitialActivityCount(int itemCount) {
mInitialActivityCount = itemCount;
}
public void setDefaultActionButtonContentDescription(@StringRes int resourceId) {
mDefaultActionButtonContentDescription = resourceId;
}
private ListPopupWindow getListPopupWindow() {
if (mListPopupWindow == null) {
mListPopupWindow = new ListPopupWindow(getContext());
mListPopupWindow.setAdapter(mAdapter);
mListPopupWindow.setAnchorView(ActivityChooserView.this);
mListPopupWindow.setModal(true);
mListPopupWindow.setOnItemClickListener(mCallbacks);
mListPopupWindow.setOnDismissListener(mCallbacks);
}
return mListPopupWindow;
}
private void updateAppearance() {
if (mAdapter.getCount() > 0) {
mExpandActivityOverflowButton.setEnabled(true);
} else {
mExpandActivityOverflowButton.setEnabled(false);
}
final int activityCount = mAdapter.getActivityCount();
final int historySize = mAdapter.getHistorySize();
if (activityCount==1 || activityCount > 1 && historySize > 0) {
mDefaultActivityButton.setVisibility(VISIBLE);
ResolveInfo activity = mAdapter.getDefaultActivity();
PackageManager packageManager = mContext.getPackageManager();
mDefaultActivityButtonImage.setImageDrawable(activity.loadIcon(packageManager));
if (mDefaultActionButtonContentDescription != 0) {
CharSequence label = activity.loadLabel(packageManager);
String contentDescription = mContext.getString(
mDefaultActionButtonContentDescription, label);
mDefaultActivityButton.setContentDescription(contentDescription);
}
} else {
mDefaultActivityButton.setVisibility(View.GONE);
}
if (mDefaultActivityButton.getVisibility() == VISIBLE) {
mActivityChooserContent.setBackground(mActivityChooserContentBackground);
} else {
mActivityChooserContent.setBackground(null);
}
}
private class Callbacks implements AdapterView.OnItemClickListener,
View.OnClickListener, View.OnLongClickListener, PopupWindow.OnDismissListener {
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
ActivityChooserViewAdapter adapter = (ActivityChooserViewAdapter) parent.getAdapter();
final int itemViewType = adapter.getItemViewType(position);
switch (itemViewType) {
case ActivityChooserViewAdapter.ITEM_VIEW_TYPE_FOOTER: {
showPopupUnchecked(ActivityChooserViewAdapter.MAX_ACTIVITY_COUNT_UNLIMITED);
} break;
case ActivityChooserViewAdapter.ITEM_VIEW_TYPE_ACTIVITY: {
dismissPopup();
if (mIsSelectingDefaultActivity) {
if (position > 0) {
mAdapter.getDataModel().setDefaultActivity(position);
}
} else {
position = mAdapter.getShowDefaultActivity() ? position : position + 1;
Intent launchIntent = mAdapter.getDataModel().chooseActivity(position);
if (launchIntent != null) {
launchIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
ResolveInfo resolveInfo = mAdapter.getDataModel().getActivity(position);
startActivity(launchIntent, resolveInfo);
}
}
} break;
default:
throw new IllegalArgumentException();
}
}
public void onClick(View view) {
if (view == mDefaultActivityButton) {
dismissPopup();
ResolveInfo defaultActivity = mAdapter.getDefaultActivity();
final int index = mAdapter.getDataModel().getActivityIndex(defaultActivity);
Intent launchIntent = mAdapter.getDataModel().chooseActivity(index);
if (launchIntent != null) {
launchIntent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
startActivity(launchIntent, defaultActivity);
}
} else if (view == mExpandActivityOverflowButton) {
mIsSelectingDefaultActivity = false;
showPopupUnchecked(mInitialActivityCount);
} else {
throw new IllegalArgumentException();
}
}
@Override
public boolean onLongClick(View view) {
if (view == mDefaultActivityButton) {
if (mAdapter.getCount() > 0) {
mIsSelectingDefaultActivity = true;
showPopupUnchecked(mInitialActivityCount);
}
} else {
throw new IllegalArgumentException();
}
return true;
}
public void onDismiss() {
notifyOnDismissListener();
if (mProvider != null) {
mProvider.subUiVisibilityChanged(false);
}
}
private void notifyOnDismissListener() {
if (mOnDismissListener != null) {
mOnDismissListener.onDismiss();
}
}
private void startActivity(Intent intent, ResolveInfo resolveInfo) {
try {
mContext.startActivity(intent);
} catch (RuntimeException re) {
CharSequence appLabel = resolveInfo.loadLabel(mContext.getPackageManager());
String message = mContext.getString(
R.string.activitychooserview_choose_application_error, appLabel);
Log.e(LOG_TAG, message);
Toast.makeText(mContext, message, Toast.LENGTH_SHORT).show();
}
}
}
private class ActivityChooserViewAdapter extends BaseAdapter {
public static final int MAX_ACTIVITY_COUNT_UNLIMITED = Integer.MAX_VALUE;
public static final int MAX_ACTIVITY_COUNT_DEFAULT = 4;
private static final int ITEM_VIEW_TYPE_ACTIVITY = 0;
private static final int ITEM_VIEW_TYPE_FOOTER = 1;
private static final int ITEM_VIEW_TYPE_COUNT = 3;
private ActivityChooserModel mDataModel;
private int mMaxActivityCount = MAX_ACTIVITY_COUNT_DEFAULT;
private boolean mShowDefaultActivity;
private boolean mHighlightDefaultActivity;
private boolean mShowFooterView;
public void setDataModel(ActivityChooserModel dataModel) {
ActivityChooserModel oldDataModel = mAdapter.getDataModel();
if (oldDataModel != null && isShown()) {
oldDataModel.unregisterObserver(mModelDataSetOberver);
}
mDataModel = dataModel;
if (dataModel != null && isShown()) {
dataModel.registerObserver(mModelDataSetOberver);
}
notifyDataSetChanged();
}
@Override
public int getItemViewType(int position) {
if (mShowFooterView && position == getCount() - 1) {
return ITEM_VIEW_TYPE_FOOTER;
} else {
return ITEM_VIEW_TYPE_ACTIVITY;
}
}
@Override
public int getViewTypeCount() {
return ITEM_VIEW_TYPE_COUNT;
}
public int getCount() {
int count = 0;
int activityCount = mDataModel.getActivityCount();
if (!mShowDefaultActivity && mDataModel.getDefaultActivity() != null) {
activityCount--;
}
count = Math.min(activityCount, mMaxActivityCount);
if (mShowFooterView) {
count++;
}
return count;
}
public Object getItem(int position) {
final int itemViewType = getItemViewType(position);
switch (itemViewType) {
case ITEM_VIEW_TYPE_FOOTER:
return null;
case ITEM_VIEW_TYPE_ACTIVITY:
if (!mShowDefaultActivity && mDataModel.getDefaultActivity() != null) {
position++;
}
return mDataModel.getActivity(position);
default:
throw new IllegalArgumentException();
}
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
final int itemViewType = getItemViewType(position);
switch (itemViewType) {
case ITEM_VIEW_TYPE_FOOTER:
if (convertView == null || convertView.getId() != ITEM_VIEW_TYPE_FOOTER) {
convertView = LayoutInflater.from(getContext()).inflate(
R.layout.activity_chooser_view_list_item, parent, false);
convertView.setId(ITEM_VIEW_TYPE_FOOTER);
TextView titleView = convertView.findViewById(R.id.title);
titleView.setText(mContext.getString(
R.string.activity_chooser_view_see_all));
}
return convertView;
case ITEM_VIEW_TYPE_ACTIVITY:
if (convertView == null || convertView.getId() != R.id.list_item) {
convertView = LayoutInflater.from(getContext()).inflate(
R.layout.activity_chooser_view_list_item, parent, false);
}
PackageManager packageManager = mContext.getPackageManager();
ImageView iconView = convertView.findViewById(R.id.icon);
ResolveInfo activity = (ResolveInfo) getItem(position);
iconView.setImageDrawable(activity.loadIcon(packageManager));
TextView titleView = convertView.findViewById(R.id.title);
titleView.setText(activity.loadLabel(packageManager));
if (mShowDefaultActivity && position == 0 && mHighlightDefaultActivity) {
convertView.setActivated(true);
} else {
convertView.setActivated(false);
}
return convertView;
default:
throw new IllegalArgumentException();
}
}
public int measureContentWidth() {
final int oldMaxActivityCount = mMaxActivityCount;
mMaxActivityCount = MAX_ACTIVITY_COUNT_UNLIMITED;
int contentWidth = 0;
View itemView = null;
final int widthMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
final int heightMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
final int count = getCount();
for (int i = 0; i < count; i++) {
itemView = getView(i, itemView, null);
itemView.measure(widthMeasureSpec, heightMeasureSpec);
contentWidth = Math.max(contentWidth, itemView.getMeasuredWidth());
}
mMaxActivityCount = oldMaxActivityCount;
return contentWidth;
}
public void setMaxActivityCount(int maxActivityCount) {
if (mMaxActivityCount != maxActivityCount) {
mMaxActivityCount = maxActivityCount;
notifyDataSetChanged();
}
}
public ResolveInfo getDefaultActivity() {
return mDataModel.getDefaultActivity();
}
public void setShowFooterView(boolean showFooterView) {
if (mShowFooterView != showFooterView) {
mShowFooterView = showFooterView;
notifyDataSetChanged();
}
}
public int getActivityCount() {
return mDataModel.getActivityCount();
}
public int getHistorySize() {
return mDataModel.getHistorySize();
}
public ActivityChooserModel getDataModel() {
return mDataModel;
}
public void setShowDefaultActivity(boolean showDefaultActivity,
boolean highlightDefaultActivity) {
if (mShowDefaultActivity != showDefaultActivity
|| mHighlightDefaultActivity != highlightDefaultActivity) {
mShowDefaultActivity = showDefaultActivity;
mHighlightDefaultActivity = highlightDefaultActivity;
notifyDataSetChanged();
}
}
public boolean getShowDefaultActivity() {
return mShowDefaultActivity;
}
}
}