/// <summary>
/// Update the tooltip
/// </summary>
void UpdateTooltip()
{
// always start by hiding any existing tooltip
toolTip.SetToolTip(null);
// see if we need to display a tooltip
if (currentLinkElement != null && !navigatedToCurrentLinkElement)
{
// set timer so we only show the tooltip if the user hovers over this
// link element for 300ms
Timer toolTipDelayTimer = new ToolTipDelayTimer(currentLinkElement, 300);
toolTipDelayTimer.Tick += new EventHandler(toolTipDelayTimer_Tick);
toolTipDelayTimer.Start();
}
}
/// <summary>
/// Delayed processing for showing tooltips (only show them if the user hovers
/// over a link for more than a specified period of time)
/// </summary>
/// <param name="sender">sender</param>
/// <param name="e">event args</param>
private void toolTipDelayTimer_Tick(object sender, EventArgs e)
{
try
{
// get the delay element from the timer
ToolTipDelayTimer toolTipDelayTimer = sender as ToolTipDelayTimer;
IHTMLElement delayElement = toolTipDelayTimer.DelayElement;
// stop and dispose timer
toolTipDelayTimer.Stop();
toolTipDelayTimer.Dispose();
// determine the link element the mouse is currently over and check to see
// if the delay element is the same as the current element -- if so, show the tooltip
IHTMLElement mouseOverElement = _htmlEditorControl.ElementAtPoint(Control.MousePosition);
if (mouseOverElement != null && (GetLinkElement(mouseOverElement) == delayElement) && !navigatedToCurrentLinkElement && currentLinkElement != null)
{
// calculate the screen coordinate of the top of the current link element
int elementClientY = HTMLElementHelper.GetTopRelativeToClient(mouseOverElement);
Point elementScreenPt = _htmlEditorControl.ClientPointToScreenPoint(new Point(0, elementClientY));
// set location - x-based on mouse, y-based on top of element (minus height of tooltip)
toolTip.Location = new Point(Control.MousePosition.X, elementScreenPt.Y - 20);
// set tooltip text
string href = (string)currentLinkElement.getAttribute("href", 2); // 2 means don't auto-escape
href = StringHelper.Ellipsis(href, 35);
toolTip.SetToolTip(String.Format(CultureInfo.CurrentCulture, Res.Get(StringId.LinkToolTip), href));
// start timer which monitors whether the main frame is still active and
// hides the tooltip if it does not
_frameActiveTimer = new Timer();
_frameActiveTimer.Interval = 100;
_frameActiveTimer.Tick += new EventHandler(frameActiveTimer_Tick);
_frameActiveTimer.Start();
}
}
catch (Exception ex)
{
// eat exceptions that occur in here (bizzare timing bugs can occur w/ drag and
// drop of images -- this is harmless and the user shouldn't be burdened with
// an error message
Debug.Fail("Unexpected error during tool tip delay timer: " + ex.ToString());
}
}
/// <summary>
/// Update the tooltip
/// </summary>
void UpdateTooltip()
{
// always start by hiding any existing tooltip
toolTip.SetToolTip(null);
// see if we need to display a tooltip
if (currentLinkElement != null && !navigatedToCurrentLinkElement)
{
// set timer so we only show the tooltip if the user hovers over this
// link element for 300ms
Timer toolTipDelayTimer = new ToolTipDelayTimer(currentLinkElement, 300);
toolTipDelayTimer.Tick += new EventHandler(toolTipDelayTimer_Tick);
toolTipDelayTimer.Start();
}
}
