/////////////////////////////////////////////////////////////////////////////////////////////////
//
// BuildListOfHyperlinksFromWindow()
//
// Signals the background thread that the list of hyperlinks needs to be refreshed.
//
// Run on the main UI thread.
//
/////////////////////////////////////////////////////////////////////////////////////////////////
public void BuildListOfHyperlinksFromWindow(bool fUseCache, bool fSearchLinkChildren)
{
// Let the background thread know it must generate the list of hyperlinks.
SampleMsgData msgData = new SampleMsgData();
msgData.msgType = SampleMsgType.msgBuildList;
AddMsgToQueue(msgData);
}
/////////////////////////////////////////////////////////////////////////////////////////////////
//
// Uninitialize()
//
// Close the background thread down.
//
// Runs on the main UI thread.
//
/////////////////////////////////////////////////////////////////////////////////////////////////
public void Uninitialize()
{
// Tell the background thread to close down.
if (_threadBackground != null)
{
SampleMsgData msgData = new SampleMsgData();
msgData.msgType = SampleMsgType.msgCloseDown;
AddMsgToQueue(msgData);
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////
//
// InvokeLink()
//
// Signals the background thread that a hyperlink needs to be invoked.
//
// Run on the main UI thread.
//
/////////////////////////////////////////////////////////////////////////////////////////////////
public void InvokeLink(int idxLink, bool fUseCache)
{
// It's ok to access the listview directly here, as we're running on the main UI thread.
if ((idxLink >= 0) && (idxLink < _listViewLinks.Items.Count))
{
IUIAutomationElement element = (IUIAutomationElement)_listViewLinks.Items[idxLink].Tag;
if (element != null)
{
// Let the background thread know it must invoke the hyperlink.
SampleMsgData msgData = new SampleMsgData();
msgData.msgType = SampleMsgType.msgInvokeLink;
msgData.element = element;
msgData.fUseCache = fUseCache;
AddMsgToQueue(msgData);
}
}
}
/////////////////////////////////////////////////////////////////////////////////////////////////
//
// AddMsgToQueue()
//
// Update a list of messages waiting to be processed by the background thread.
//
// Run on the main UI thread.
//
/////////////////////////////////////////////////////////////////////////////////////////////////
private void AddMsgToQueue(SampleMsgData msgData)
{
// Request the lock, and block until it is obtained.
Monitor.Enter(_msgQueue);
try
{
// When the lock is obtained, add an element.
_msgQueue.Enqueue(msgData);
}
finally
{
// Ensure that the lock is released.
Monitor.Exit(_msgQueue);
}
// Let the background thread know there's some action to be taken.
_autoEventMsg.Set();
}
