private int on_drag_enter(cef_drag_handler_t *self, cef_browser_t *browser, cef_drag_data_t *dragData, CefDragOperationsMask mask)
{
CheckSelf(self);
var m_browser = CefBrowser.FromNative(browser);
var m_dragData = CefDragData.FromNative(dragData);
var m_result = OnDragEnter(m_browser, m_dragData, mask);
return(m_result ? 1 : 0);
}
private int start_dragging(cef_render_handler_t *self, cef_browser_t *browser, cef_drag_data_t *drag_data, CefDragOperationsMask allowed_ops, int x, int y)
{
CheckSelf(self);
var m_browser = CefBrowser.FromNative(browser);
var m_dragData = CefDragData.FromNative(drag_data);
var m_result = StartDragging(m_browser, m_dragData, allowed_ops, x, y);
return(m_result ? 1 : 0);
}
/// <summary> /// Called when an external drag event enters the browser window. |dragData| /// contains the drag event data and |mask| represents the type of drag /// operation. Return false for default drag handling behavior or true to /// cancel the drag event. /// </summary> protected abstract bool OnDragEnter(CefBrowser browser, CefDragData dragData, CefDragOperationsMask mask);
/// <summary>
/// Called when the user starts dragging content in the web view. Contextual
/// information about the dragged content is supplied by |drag_data|.
/// (|x|, |y|) is the drag start location in screen coordinates.
/// OS APIs that run a system message loop may be used within the
/// StartDragging call.
/// Return false to abort the drag operation. Don't call any of
/// CefBrowserHost::DragSource*Ended* methods after returning false.
/// Return true to handle the drag operation. Call
/// CefBrowserHost::DragSourceEndedAt and DragSourceSystemDragEnded either
/// synchronously or asynchronously to inform the web view that the drag
/// operation has ended.
/// </summary>
protected virtual bool StartDragging(CefBrowser browser, CefDragData dragData, CefDragOperationsMask allowedOps, int x, int y)
{
return(false);
}
/// <summary>
/// Call this method when the user drags the mouse into the web view (before
/// calling DragTargetDragOver/DragTargetLeave/DragTargetDrop).
/// |drag_data| should not contain file contents as this type of data is not
/// allowed to be dragged into the web view. File contents can be removed using
/// CefDragData::ResetFileContents (for example, if |drag_data| comes from
/// CefRenderHandler::StartDragging).
/// This method is only used when window rendering is disabled.
/// </summary>
public void DragTargetDragEnter(CefDragData dragData, CefMouseEvent mouseEvent, CefDragOperationsMask allowedOps)
{
var n_mouseEvent = mouseEvent.ToNative();
cef_browser_host_t.drag_target_drag_enter(_self,
dragData.ToNative(),
&n_mouseEvent,
allowedOps);
}
/// <summary>
/// Returns a copy of the current object.
/// </summary>
public CefDragData Clone()
{
return(CefDragData.FromNative(cef_drag_data_t.clone(_self)));
}
/// <summary>
/// Create a new CefDragData object.
/// </summary>
public static CefDragData Create()
{
return(CefDragData.FromNative(cef_drag_data_t.create()));
}
/// <summary>
/// Called when an external drag event enters the browser window. |dragData|
/// contains the drag event data and |mask| represents the type of drag
/// operation. Return false for default drag handling behavior or true to
/// cancel the drag event.
/// </summary>
protected virtual bool OnDragEnter(CefBrowser browser, CefDragData dragData, CefDragOperationsMask mask)
{
return(false);
}
/// <summary>
/// Called when the user starts dragging content in the web view. Contextual
/// information about the dragged content is supplied by |drag_data|.
/// OS APIs that run a system message loop may be used within the
/// StartDragging call.
/// Return false to abort the drag operation. Don't call any of
/// CefBrowserHost::DragSource*Ended* methods after returning false.
/// Return true to handle the drag operation. Call
/// CefBrowserHost::DragSourceEndedAt and DragSourceSystemDragEnded either
/// synchronously or asynchronously to inform the web view that the drag
/// operation has ended.
/// </summary>
protected virtual bool StartDragging(CefBrowser browser, CefDragData dragData, CefDragOperationsMask allowedOps, int x, int y)
{
return false;
}
/// <summary> /// Called when an external drag event enters the browser window. |dragData| /// contains the drag event data and |mask| represents the type of drag /// operation. Return false for default drag handling behavior or true to /// cancel the drag event. /// </summary> protected abstract bool OnDragEnter(CefBrowser browser, CefDragData dragData, CefDragOperationsMask mask);