https://bugs.webkit.org/show_bug.cgi?id=52343
<rdar://problem/7660558>
               
Reviewed by Darin Adler.

This patch contains the changes required to support dropping content
in WebKit on the Mac. The DragData class has been extended to provide
additional context from the application (keyboard state, modal windows, etc.)
as well as information of the drag pasteboard being used.
The support for WebKit as drag source will be added with a separate patch.

* WebCore.exp.in:
* page/DragController.cpp:
(WebCore::DragController::dragIsMove): Added DragData parameter.
(WebCore::DragController::tryDocumentDrag): Modified call to dragIsMove.
(WebCore::DragController::concludeEditDrag): Same as above.
* page/DragController.h: Added parameter to isCopyKeyDown.
* page/mac/DragControllerMac.mm:
The following methods have been modified to use the information stored
in the DragData class.
(WebCore::DragController::isCopyKeyDown):
(WebCore::DragController::dragOperation):
* platform/DragData.h:
(WebCore::DragData::flags):
* platform/DragData.cpp: Added default flags parameter to the constructor.
* platform/mac/DragDataMac.mm:
(WebCore::DragData::DragData): Added constructor that receives the name of the pasteboard to use.
(WebCore::DragData::canSmartReplace):
(WebCore::DragData::containsColor):
(WebCore::DragData::containsFiles):
(WebCore::DragData::asFilenames):
(WebCore::DragData::containsPlainText):
(WebCore::DragData::asPlainText):
(WebCore::DragData::containsCompatibleContent):
(WebCore::DragData::asURL):
(WebCore::DragData::asFragment):
All the following files have been modified to add the DragData
parameter to isCopyKeyDown. I plan to improve this in the future
and make isCopyKeyDown not platform specific.
* page/android/DragControllerAndroid.cpp:
(WebCore::DragController::isCopyKeyDown):
* page/brew/DragControllerBrew.cpp:
(WebCore::DragController::isCopyKeyDown):
* page/chromium/DragControllerChromium.cpp:
(WebCore::DragController::isCopyKeyDown):
* page/efl/DragControllerEfl.cpp:
(WebCore::DragController::isCopyKeyDown):
* page/gtk/DragControllerGtk.cpp:
(WebCore::DragController::isCopyKeyDown):
* page/haiku/DragControllerHaiku.cpp:
(WebCore::DragController::isCopyKeyDown):
* page/mac/DragControllerMac.mm:
(WebCore::DragController::isCopyKeyDown):
(WebCore::DragController::dragOperation):
* page/qt/DragControllerQt.cpp:
(WebCore::DragController::isCopyKeyDown):
* page/win/DragControllerWin.cpp:
(WebCore::DragController::isCopyKeyDown):
* page/wx/DragControllerWx.cpp:
(WebCore::DragController::isCopyKeyDown):

WebKit/mac: WebKit2: Add support for drag and drop
https://bugs.webkit.org/show_bug.cgi?id=52343
<rdar://problem/7660558>
        
Reviewed by Darin Adler.

The DragData class has been extended to provide
additional context from the application (keyboard state, modal windows, etc.)
as well as information of the drag pasteboard being used.
These are the changes to align the behavior for WebKit.

* WebView/WebView.mm:
(-[WebView applicationFlags:]): Added.
(-[WebView draggingEntered:]): Added parameter to the DragData constructor.
(-[WebView draggingUpdated:]): Added parameter to the DragData constructor.
(-[WebView draggingExited:]): Added parameter to the DragData constructor.
(-[WebView performDragOperation:]): Added parameter to the DragData constructor.

WebKit2: WebKit2: Add support for drag and drop
https://bugs.webkit.org/show_bug.cgi?id=52343
<rdar://problem/7660558>
               
Reviewed by Darin Adler.

This patch contains the changes required to support dropping content
in WebKit on the Mac. The DragData class has been extended to provide
additional context from the application (keyboard state, modal windows, etc.)
as well as information of the drag pasteboard being used.
The support for WebKit as drag source will be added with a separate patch.

* Shared/DragControllerAction.h: Added.
* UIProcess/API/mac/WKView.mm:
Added implemention of the methods required to add suport for a drop target.
To maintain asynchronous communication with the WebProcess, we always return
the previous calculated value for the drag operation.
(-[WKView _registerDraggedTypes]):
(-[WKView initWithFrame:contextRef:pageGroupRef:]):
(-[WKView applicationFlags:]):
(-[WKView draggingEntered:]):
(-[WKView draggingUpdated:]):
(-[WKView draggingExited:]):
(-[WKView prepareForDragOperation:]):
(-[WKView performDragOperation:]):
* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::WebPageProxy):
(WebKit::WebPageProxy::performDragControllerAction):
(WebKit::WebPageProxy::didPerformDragControllerAction):
* UIProcess/WebPageProxy.h:
(WebKit::WebPageProxy::dragOperation):
(WebKit::WebPageProxy::resetDragOperation):
* UIProcess/WebPageProxy.messages.in:
* WebKit2.xcodeproj/project.pbxproj:
* WebProcess/WebCoreSupport/WebDragClient.cpp:
(WebKit::WebDragClient::willPerformDragDestinationAction):
(WebKit::WebDragClient::willPerformDragSourceAction):
(WebKit::WebDragClient::actionMaskForDrag):
(WebKit::WebDragClient::dragSourceActionMaskForPoint):
(WebKit::WebDragClient::startDrag):
* WebProcess/WebPage/WebPage.cpp:
(WebKit::WebPage::performDragControllerAction):
* WebProcess/WebPage/WebPage.h:
* WebProcess/WebPage/WebPage.messages.in:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@75743 268f45cc-cd09-0410-ab3c-d52691b4dbfc