michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsCOMPtr.h"
michael@0: #include "nsTitleBarFrame.h"
michael@0: #include "nsIContent.h"
michael@0: #include "nsIDocument.h"
michael@0: #include "nsIDOMNodeList.h"
michael@0: #include "nsGkAtoms.h"
michael@0: #include "nsIWidget.h"
michael@0: #include "nsMenuPopupFrame.h"
michael@0: #include "nsPresContext.h"
michael@0: #include "nsIDocShell.h"
michael@0: #include "nsPIDOMWindow.h"
michael@0: #include "nsDisplayList.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "mozilla/MouseEvents.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: //
michael@0: // NS_NewTitleBarFrame
michael@0: //
michael@0: // Creates a new TitleBar frame and returns it
michael@0: //
michael@0: nsIFrame*
michael@0: NS_NewTitleBarFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: {
michael@0:   return new (aPresShell) nsTitleBarFrame(aPresShell, aContext);
michael@0: }
michael@0: 
michael@0: NS_IMPL_FRAMEARENA_HELPERS(nsTitleBarFrame)
michael@0: 
michael@0: nsTitleBarFrame::nsTitleBarFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0: :nsBoxFrame(aPresShell, aContext, false)
michael@0: {
michael@0:   mTrackingMouseMove = false;
michael@0:   UpdateMouseThrough();
michael@0: }
michael@0: 
michael@0: void
michael@0: nsTitleBarFrame::BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,
michael@0:                                              const nsRect&           aDirtyRect,
michael@0:                                              const nsDisplayListSet& aLists)
michael@0: {
michael@0:   // override, since we don't want children to get events
michael@0:   if (aBuilder->IsForEventDelivery()) {
michael@0:     if (!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::allowevents,
michael@0:                                nsGkAtoms::_true, eCaseMatters))
michael@0:       return;
michael@0:   }
michael@0:   nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsTitleBarFrame::HandleEvent(nsPresContext* aPresContext,
michael@0:                              WidgetGUIEvent* aEvent,
michael@0:                              nsEventStatus* aEventStatus)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aEventStatus);
michael@0:   if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
michael@0:     return NS_OK;
michael@0:   }
michael@0: 
michael@0:   bool doDefault = true;
michael@0: 
michael@0:   switch (aEvent->message) {
michael@0: 
michael@0:    case NS_MOUSE_BUTTON_DOWN:  {
michael@0:        if (aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton) {
michael@0:          // titlebar has no effect in non-chrome shells
michael@0:          nsCOMPtr<nsIDocShellTreeItem> dsti = aPresContext->GetDocShell();
michael@0:          if (dsti) {
michael@0:            if (dsti->ItemType() == nsIDocShellTreeItem::typeChrome) {
michael@0:              // we're tracking.
michael@0:              mTrackingMouseMove = true;
michael@0: 
michael@0:              // start capture.
michael@0:              nsIPresShell::SetCapturingContent(GetContent(), CAPTURE_IGNOREALLOWED);
michael@0: 
michael@0:              // remember current mouse coordinates.
michael@0:              mLastPoint = LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint);
michael@0:            }
michael@0:          }
michael@0: 
michael@0:          *aEventStatus = nsEventStatus_eConsumeNoDefault;
michael@0:          doDefault = false;
michael@0:        }
michael@0:      }
michael@0:      break;
michael@0: 
michael@0: 
michael@0:    case NS_MOUSE_BUTTON_UP: {
michael@0:        if (mTrackingMouseMove &&
michael@0:            aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton) {
michael@0:          // we're done tracking.
michael@0:          mTrackingMouseMove = false;
michael@0: 
michael@0:          // end capture
michael@0:          nsIPresShell::SetCapturingContent(nullptr, 0);
michael@0: 
michael@0:          *aEventStatus = nsEventStatus_eConsumeNoDefault;
michael@0:          doDefault = false;
michael@0:        }
michael@0:      }
michael@0:      break;
michael@0: 
michael@0:    case NS_MOUSE_MOVE: {
michael@0:        if(mTrackingMouseMove)
michael@0:        {
michael@0:          nsIntPoint nsMoveBy = LayoutDeviceIntPoint::ToUntyped(aEvent->refPoint) - mLastPoint;
michael@0: 
michael@0:          nsIFrame* parent = GetParent();
michael@0:          while (parent) {
michael@0:            nsMenuPopupFrame* popupFrame = do_QueryFrame(parent);
michael@0:            if (popupFrame)
michael@0:              break;
michael@0:            parent = parent->GetParent();
michael@0:          }
michael@0: 
michael@0:          // if the titlebar is in a popup, move the popup frame, otherwise
michael@0:          // move the widget associated with the window
michael@0:          if (parent) {
michael@0:            nsMenuPopupFrame* menuPopupFrame = static_cast<nsMenuPopupFrame*>(parent);
michael@0:            nsCOMPtr<nsIWidget> widget = menuPopupFrame->GetWidget();
michael@0:            nsIntRect bounds;
michael@0:            widget->GetScreenBounds(bounds);
michael@0: 
michael@0:            int32_t newx = aPresContext->DevPixelsToIntCSSPixels(bounds.x + nsMoveBy.x);
michael@0:            int32_t newy = aPresContext->DevPixelsToIntCSSPixels(bounds.y + nsMoveBy.y);
michael@0:            menuPopupFrame->MoveTo(newx, newy, false);
michael@0:          }
michael@0:          else {
michael@0:            nsIPresShell* presShell = aPresContext->PresShell();
michael@0:            nsPIDOMWindow *window = presShell->GetDocument()->GetWindow();
michael@0:            if (window) {
michael@0:              window->MoveBy(nsMoveBy.x, nsMoveBy.y);
michael@0:            }
michael@0:          }
michael@0: 
michael@0:          *aEventStatus = nsEventStatus_eConsumeNoDefault;
michael@0: 
michael@0:          doDefault = false;
michael@0:        }
michael@0:      }
michael@0:      break;
michael@0: 
michael@0:     case NS_MOUSE_CLICK: {
michael@0:       WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
michael@0:       if (mouseEvent->IsLeftClickEvent()) {
michael@0:         MouseClicked(aPresContext, mouseEvent);
michael@0:       }
michael@0:       break;
michael@0:     }
michael@0:   }
michael@0: 
michael@0:   if ( doDefault )
michael@0:     return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
michael@0:   else
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: nsTitleBarFrame::MouseClicked(nsPresContext* aPresContext,
michael@0:                               WidgetMouseEvent* aEvent)
michael@0: {
michael@0:   // Execute the oncommand event handler.
michael@0:   nsContentUtils::DispatchXULCommand(mContent,
michael@0:                                      aEvent && aEvent->mFlags.mIsTrusted);
michael@0: }