/** Updates the buttons state. */
private void updateAppearance() {
// Expand overflow button.
if (mAdapter.getCount() > 0) {
mExpandActivityOverflowButton.setEnabled(true);
} else {
mExpandActivityOverflowButton.setEnabled(false);
}
// Default activity button.
final int activityCount = mAdapter.getActivityCount();
final int historySize = mAdapter.getHistorySize();
if (activityCount > 0 && 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);
}
// Work-around for #415.
mAdapter.setShowDefaultActivity(false, false);
} else {
mDefaultActivityButton.setVisibility(View.GONE);
}
// Activity chooser content.
if (mDefaultActivityButton.getVisibility() == VISIBLE) {
mActivityChooserContent.setBackgroundDrawable(mActivityChooserContentBackground);
} else {
mActivityChooserContent.setBackgroundDrawable(null);
mActivityChooserContent.setPadding(0, 0, 0, 0);
}
}
// AdapterView#OnItemClickListener
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) {
// The item at position zero is the default already.
if (position > 0) {
mAdapter.getDataModel().setDefaultActivity(position);
}
} else {
// If the default target is not shown in the list, the first
// item in the model is default action => adjust index
position = mAdapter.getShowDefaultActivity() ? position : position + 1;
Intent launchIntent = mAdapter.getDataModel().chooseActivity(position);
if (launchIntent != null) {
mContext.startActivity(launchIntent);
}
}
}
break;
default:
throw new IllegalArgumentException();
}
}
/** {@inheritDoc} */
public void setActivityChooserModel(ActivityChooserModel dataModel) {
mAdapter.setDataModel(dataModel);
if (isShowingPopup()) {
dismissPopup();
showPopup();
}
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
mActivityChooserContent.layout(0, 0, right - left, bottom - top);
if (getListPopupWindow().isShowing()) {
showPopupUnchecked(mAdapter.getMaxActivityCount());
} else {
dismissPopup();
}
}
/**
* Create a new instance.
*
* @param context The application environment.
* @param attrs A collection of attributes.
* @param defStyle The default style to apply to this view.
*/
public ActivityChooserView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mContext = context;
TypedArray attributesArray =
context.obtainStyledAttributes(attrs, R.styleable.SherlockActivityChooserView, defStyle, 0);
mInitialActivityCount =
attributesArray.getInt(
R.styleable.SherlockActivityChooserView_initialActivityCount,
ActivityChooserViewAdapter.MAX_ACTIVITY_COUNT_DEFAULT);
Drawable expandActivityOverflowButtonDrawable =
attributesArray.getDrawable(
R.styleable.SherlockActivityChooserView_expandActivityOverflowButtonDrawable);
attributesArray.recycle();
LayoutInflater inflater = LayoutInflater.from(mContext);
inflater.inflate(R.layout.abs__activity_chooser_view, this, true);
mCallbacks = new Callbacks();
mActivityChooserContent =
(IcsLinearLayout) findViewById(R.id.abs__activity_chooser_view_content);
mActivityChooserContentBackground = mActivityChooserContent.getBackground();
mDefaultActivityButton = (FrameLayout) findViewById(R.id.abs__default_activity_button);
mDefaultActivityButton.setOnClickListener(mCallbacks);
mDefaultActivityButton.setOnLongClickListener(mCallbacks);
mDefaultActivityButtonImage = (ImageView) mDefaultActivityButton.findViewById(R.id.abs__image);
mExpandActivityOverflowButton = (FrameLayout) findViewById(R.id.abs__expand_activities_button);
mExpandActivityOverflowButton.setOnClickListener(mCallbacks);
mExpandActivityOverflowButtonImage =
(ImageView) mExpandActivityOverflowButton.findViewById(R.id.abs__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(R.dimen.abs__config_prefDialogWidth));
}
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
ActivityChooserModel dataModel = mAdapter.getDataModel();
if (dataModel != null) {
try {
dataModel.registerObserver(mModelDataSetOberver);
} catch (IllegalStateException e) {
// Related to #557.
}
}
mIsAttachedToWindow = true;
}
/**
* Shows the popup no matter if it was already showing.
*
* @param maxActivityCount The max number of activities to display.
*/
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);
}
IcsListPopupWindow 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.abs__activitychooserview_choose_application));
}
}
@Override
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
ActivityChooserModel dataModel = mAdapter.getDataModel();
if (dataModel != null) {
try {
dataModel.unregisterObserver(mModelDataSetOberver);
} catch (IllegalStateException e) {
// Oh, well... fixes issue #557
}
}
ViewTreeObserver viewTreeObserver = getViewTreeObserver();
if (viewTreeObserver.isAlive()) {
viewTreeObserver.removeGlobalOnLayoutListener(mOnGlobalLayoutListener);
}
mIsAttachedToWindow = false;
}
public ActivityChooserModel getDataModel() {
return mAdapter.getDataModel();
}
@Override
public void onInvalidated() {
super.onInvalidated();
mAdapter.notifyDataSetInvalidated();
}
@Override
public void onChanged() {
super.onChanged();
mAdapter.notifyDataSetChanged();
}
