/// <summary>
/// Merges all the listeners registered on the specified observer with the listeners
/// registered on this object.
/// </summary>
/// <remarks>
/// Merges all the listeners registered on the specified observer with the listeners
/// registered on this object. After this method is invoked, the specified observer
/// will return false in
/// <see cref="isAlive()">isAlive()</see>
/// and should not be used anymore.
/// </remarks>
/// <param name="observer">The ViewTreeObserver whose listeners must be added to this observer
/// </param>
internal void merge(android.view.ViewTreeObserver observer)
{
if (observer.mOnGlobalFocusListeners != null)
{
if (mOnGlobalFocusListeners != null)
{
mOnGlobalFocusListeners.addAll(observer.mOnGlobalFocusListeners);
}
else
{
mOnGlobalFocusListeners = observer.mOnGlobalFocusListeners;
}
}
if (observer.mOnGlobalLayoutListeners != null)
{
if (mOnGlobalLayoutListeners != null)
{
mOnGlobalLayoutListeners.addAll(observer.mOnGlobalLayoutListeners);
}
else
{
mOnGlobalLayoutListeners = observer.mOnGlobalLayoutListeners;
}
}
if (observer.mOnPreDrawListeners != null)
{
if (mOnPreDrawListeners != null)
{
mOnPreDrawListeners.addAll(observer.mOnPreDrawListeners);
}
else
{
mOnPreDrawListeners = observer.mOnPreDrawListeners;
}
}
if (observer.mOnTouchModeChangeListeners != null)
{
if (mOnTouchModeChangeListeners != null)
{
mOnTouchModeChangeListeners.addAll(observer.mOnTouchModeChangeListeners);
}
else
{
mOnTouchModeChangeListeners = observer.mOnTouchModeChangeListeners;
}
}
if (observer.mOnComputeInternalInsetsListeners != null)
{
if (mOnComputeInternalInsetsListeners != null)
{
mOnComputeInternalInsetsListeners.addAll(observer.mOnComputeInternalInsetsListeners
);
}
else
{
mOnComputeInternalInsetsListeners = observer.mOnComputeInternalInsetsListeners;
}
}
observer.kill();
}
protected internal override void onDetachedFromWindow()
{
if (mGlobalListenersAdded)
{
android.view.ViewTreeObserver observer = getViewTreeObserver();
observer.removeOnScrollChangedListener(mScrollChangedListener);
observer.removeOnPreDrawListener(mDrawListener);
mGlobalListenersAdded = false;
}
mRequestedVisible = false;
updateWindow(false, false);
mHaveFrame = false;
if (mWindow != null)
{
try
{
mSession.remove(mWindow);
}
catch (android.os.RemoteException)
{
}
// Not much we can do here...
mWindow = null;
}
mSession = null;
mLayout.token = null;
base.onDetachedFromWindow();
}
public virtual bool tryShow()
{
mPopup = new android.widget.ListPopupWindow(mContext, null, [email protected]
.popupMenuStyle);
mPopup.setOnDismissListener(this);
mPopup.setOnItemClickListener(this);
mAdapter = new [email protected](this, mMenu
);
mPopup.setAdapter(mAdapter);
mPopup.setModal(true);
android.view.View anchor = mAnchorView;
if (anchor != null)
{
bool addGlobalListener = mTreeObserver == null;
mTreeObserver = anchor.getViewTreeObserver();
// Refresh to latest
if (addGlobalListener)
{
mTreeObserver.addOnGlobalLayoutListener(this);
}
anchor.addOnAttachStateChangeListener(this);
mPopup.setAnchorView(anchor);
}
else
{
return(false);
}
mPopup.setContentWidth(System.Math.Min(measureContentWidth(mAdapter), mPopupMaxWidth
));
mPopup.setInputMethodMode(android.widget.PopupWindow.INPUT_METHOD_NOT_NEEDED);
mPopup.show();
mPopup.getListView().setOnKeyListener(this);
return(true);
}
public virtual void onViewDetachedFromWindow(android.view.View v)
{
if (mTreeObserver != null)
{
if (!mTreeObserver.isAlive())
{
mTreeObserver = v.getViewTreeObserver();
}
mTreeObserver.removeGlobalOnLayoutListener(this);
}
v.removeOnAttachStateChangeListener(this);
}
/// <summary>Dismisses the popup window with activities.</summary>
/// <remarks>Dismisses the popup window with activities.</remarks>
/// <returns>True if dismissed, false if already dismissed.</returns>
public virtual bool dismissPopup()
{
if (isShowingPopup())
{
getListPopupWindow().dismiss();
android.view.ViewTreeObserver viewTreeObserver = getViewTreeObserver();
if (viewTreeObserver.isAlive())
{
viewTreeObserver.removeGlobalOnLayoutListener(mOnGlobalLayoutListener);
}
}
return(true);
}
protected internal override void onDetachedFromWindow()
{
base.onDetachedFromWindow();
android.widget.ActivityChooserModel dataModel = mAdapter.getDataModel();
if (dataModel != null)
{
dataModel.unregisterObserver(mModelDataSetOberver);
}
android.view.ViewTreeObserver viewTreeObserver = getViewTreeObserver();
if (viewTreeObserver.isAlive())
{
viewTreeObserver.removeGlobalOnLayoutListener(mOnGlobalLayoutListener);
}
mIsAttachedToWindow = false;
}
public virtual void onDismiss()
{
mPopup = null;
mMenu.close();
if (mTreeObserver != null)
{
if (!mTreeObserver.isAlive())
{
mTreeObserver = mAnchorView.getViewTreeObserver();
}
mTreeObserver.removeGlobalOnLayoutListener(this);
mTreeObserver = null;
}
mAnchorView.removeOnAttachStateChangeListener(this);
}
protected internal override void onAttachedToWindow()
{
base.onAttachedToWindow();
mParent.requestTransparentRegion(this);
mSession = getWindowSession();
mLayout.token = getWindowToken();
mLayout.setTitle(java.lang.CharSequenceProxy.Wrap("SurfaceView"));
mViewVisibility = getVisibility() == VISIBLE;
if (!mGlobalListenersAdded)
{
android.view.ViewTreeObserver observer = getViewTreeObserver();
observer.addOnScrollChangedListener(mScrollChangedListener);
observer.addOnPreDrawListener(mDrawListener);
mGlobalListenersAdded = true;
}
}
protected internal override void onDetachedFromWindow()
{
base.onDetachedFromWindow();
android.view.ViewTreeObserver treeObserver = getViewTreeObserver();
treeObserver.removeOnTouchModeChangeListener(this);
}
protected internal override void onAttachedToWindow()
{
base.onAttachedToWindow();
android.view.ViewTreeObserver treeObserver = getViewTreeObserver();
treeObserver.addOnTouchModeChangeListener(this);
}
public virtual bool tryShow()
{
mPopup = new android.widget.ListPopupWindow(mContext, null, [email protected]
.popupMenuStyle);
mPopup.setOnDismissListener(this);
mPopup.setOnItemClickListener(this);
mAdapter = new [email protected](this, mMenu
);
mPopup.setAdapter(mAdapter);
mPopup.setModal(true);
android.view.View anchor = mAnchorView;
if (anchor != null)
{
bool addGlobalListener = mTreeObserver == null;
mTreeObserver = anchor.getViewTreeObserver();
// Refresh to latest
if (addGlobalListener)
{
mTreeObserver.addOnGlobalLayoutListener(this);
}
anchor.addOnAttachStateChangeListener(this);
mPopup.setAnchorView(anchor);
}
else
{
return false;
}
mPopup.setContentWidth(System.Math.Min(measureContentWidth(mAdapter), mPopupMaxWidth
));
mPopup.setInputMethodMode(android.widget.PopupWindow.INPUT_METHOD_NOT_NEEDED);
mPopup.show();
mPopup.getListView().setOnKeyListener(this);
return true;
}
public virtual void onViewDetachedFromWindow(android.view.View v)
{
if (mTreeObserver != null)
{
if (!mTreeObserver.isAlive())
{
mTreeObserver = v.getViewTreeObserver();
}
mTreeObserver.removeGlobalOnLayoutListener(this);
}
v.removeOnAttachStateChangeListener(this);
}
public virtual void onDismiss()
{
mPopup = null;
mMenu.close();
if (mTreeObserver != null)
{
if (!mTreeObserver.isAlive())
{
mTreeObserver = mAnchorView.getViewTreeObserver();
}
mTreeObserver.removeGlobalOnLayoutListener(this);
mTreeObserver = null;
}
mAnchorView.removeOnAttachStateChangeListener(this);
}
