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https://repo.dactyloidae.xyz/Dactyloidae/UXP.git
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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo
This commit is contained in:
Roy Tam
commit
dcd9973243
150858 changed files with 23884658 additions and 0 deletions
895
dom/base/nsContentAreaDragDrop.cpp
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895
dom/base/nsContentAreaDragDrop.cpp
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsReadableUtils.h"
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// Local Includes
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#include "nsContentAreaDragDrop.h"
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// Helper Classes
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#include "nsString.h"
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// Interfaces needed to be included
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#include "nsCopySupport.h"
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#include "nsIDOMUIEvent.h"
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#include "nsISelection.h"
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#include "nsISelectionController.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMNodeList.h"
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#include "nsIDOMEvent.h"
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#include "nsIDOMDragEvent.h"
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#include "nsPIDOMWindow.h"
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#include "nsIDOMRange.h"
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#include "nsIFormControl.h"
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#include "nsIDOMHTMLAreaElement.h"
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#include "nsIDOMHTMLAnchorElement.h"
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#include "nsITransferable.h"
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#include "nsComponentManagerUtils.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsServiceManagerUtils.h"
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#include "nsNetUtil.h"
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#include "nsIFile.h"
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#include "nsFrameLoader.h"
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#include "nsIWebNavigation.h"
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#include "nsIDocShell.h"
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#include "nsIContent.h"
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#include "nsIImageLoadingContent.h"
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#include "nsITextControlElement.h"
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#include "nsUnicharUtils.h"
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#include "nsIURL.h"
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#include "nsIDocument.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIPrincipal.h"
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#include "nsIDocShellTreeItem.h"
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#include "nsIWebBrowserPersist.h"
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#include "nsEscape.h"
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#include "nsContentUtils.h"
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#include "nsIMIMEService.h"
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#include "imgIContainer.h"
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#include "imgIRequest.h"
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#include "mozilla/dom/DataTransfer.h"
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#include "nsIMIMEInfo.h"
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#include "nsRange.h"
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#include "TabParent.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/HTMLAreaElement.h"
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#include "nsVariant.h"
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using namespace mozilla::dom;
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class MOZ_STACK_CLASS DragDataProducer
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{
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public:
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DragDataProducer(nsPIDOMWindowOuter* aWindow,
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nsIContent* aTarget,
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nsIContent* aSelectionTargetNode,
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bool aIsAltKeyPressed);
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nsresult Produce(DataTransfer* aDataTransfer,
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bool* aCanDrag,
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nsISelection** aSelection,
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nsIContent** aDragNode);
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private:
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void AddString(DataTransfer* aDataTransfer,
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const nsAString& aFlavor,
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const nsAString& aData,
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nsIPrincipal* aPrincipal);
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nsresult AddStringsToDataTransfer(nsIContent* aDragNode,
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DataTransfer* aDataTransfer);
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static nsresult GetDraggableSelectionData(nsISelection* inSelection,
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nsIContent* inRealTargetNode,
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nsIContent **outImageOrLinkNode,
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bool* outDragSelectedText);
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static already_AddRefed<nsIContent> FindParentLinkNode(nsIContent* inNode);
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static MOZ_MUST_USE nsresult
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GetAnchorURL(nsIContent* inNode, nsAString& outURL);
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static void GetNodeString(nsIContent* inNode, nsAString & outNodeString);
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static void CreateLinkText(const nsAString& inURL, const nsAString & inText,
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nsAString& outLinkText);
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nsCOMPtr<nsPIDOMWindowOuter> mWindow;
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nsCOMPtr<nsIContent> mTarget;
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nsCOMPtr<nsIContent> mSelectionTargetNode;
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bool mIsAltKeyPressed;
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nsString mUrlString;
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nsString mImageSourceString;
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nsString mImageDestFileName;
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nsString mTitleString;
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// will be filled automatically if you fill urlstring
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nsString mHtmlString;
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nsString mContextString;
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nsString mInfoString;
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bool mIsAnchor;
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nsCOMPtr<imgIContainer> mImage;
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};
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nsresult
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nsContentAreaDragDrop::GetDragData(nsPIDOMWindowOuter* aWindow,
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nsIContent* aTarget,
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nsIContent* aSelectionTargetNode,
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bool aIsAltKeyPressed,
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DataTransfer* aDataTransfer,
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bool* aCanDrag,
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nsISelection** aSelection,
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nsIContent** aDragNode)
|
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{
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NS_ENSURE_TRUE(aSelectionTargetNode, NS_ERROR_INVALID_ARG);
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*aCanDrag = true;
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DragDataProducer
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provider(aWindow, aTarget, aSelectionTargetNode, aIsAltKeyPressed);
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return provider.Produce(aDataTransfer, aCanDrag, aSelection, aDragNode);
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}
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NS_IMPL_ISUPPORTS(nsContentAreaDragDropDataProvider, nsIFlavorDataProvider)
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// SaveURIToFile
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// used on platforms where it's possible to drag items (e.g. images)
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// into the file system
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nsresult
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nsContentAreaDragDropDataProvider::SaveURIToFile(nsAString& inSourceURIString,
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nsIFile* inDestFile,
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bool isPrivate)
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{
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nsCOMPtr<nsIURI> sourceURI;
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nsresult rv = NS_NewURI(getter_AddRefs(sourceURI), inSourceURIString);
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if (NS_FAILED(rv)) {
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return NS_ERROR_FAILURE;
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}
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nsCOMPtr<nsIURL> sourceURL = do_QueryInterface(sourceURI);
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if (!sourceURL) {
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return NS_ERROR_NO_INTERFACE;
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}
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rv = inDestFile->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
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NS_ENSURE_SUCCESS(rv, rv);
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// we rely on the fact that the WPB is refcounted by the channel etc,
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// so we don't keep a ref to it. It will die when finished.
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nsCOMPtr<nsIWebBrowserPersist> persist =
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do_CreateInstance("@mozilla.org/embedding/browser/nsWebBrowserPersist;1",
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&rv);
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NS_ENSURE_SUCCESS(rv, rv);
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persist->SetPersistFlags(nsIWebBrowserPersist::PERSIST_FLAGS_AUTODETECT_APPLY_CONVERSION);
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// referrer policy can be anything since the referrer is nullptr
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return persist->SavePrivacyAwareURI(sourceURI, nullptr, nullptr,
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mozilla::net::RP_Default,
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nullptr, nullptr,
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inDestFile, isPrivate);
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}
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// This is our nsIFlavorDataProvider callback. There are several
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// assumptions here that make this work:
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//
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// 1. Someone put a kFilePromiseURLMime flavor into the transferable
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// with the source URI of the file to save (as a string). We did
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// that in AddStringsToDataTransfer.
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//
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// 2. Someone put a kFilePromiseDirectoryMime flavor into the
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// transferable with an nsIFile for the directory we are to
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// save in. That has to be done by platform-specific code (in
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// widget), which gets the destination directory from
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// OS-specific drag information.
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//
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NS_IMETHODIMP
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nsContentAreaDragDropDataProvider::GetFlavorData(nsITransferable *aTransferable,
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const char *aFlavor,
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nsISupports **aData,
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uint32_t *aDataLen)
|
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{
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NS_ENSURE_ARG_POINTER(aData && aDataLen);
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*aData = nullptr;
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*aDataLen = 0;
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nsresult rv = NS_ERROR_NOT_IMPLEMENTED;
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if (strcmp(aFlavor, kFilePromiseMime) == 0) {
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// get the URI from the kFilePromiseURLMime flavor
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NS_ENSURE_ARG(aTransferable);
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nsCOMPtr<nsISupports> tmp;
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uint32_t dataSize = 0;
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aTransferable->GetTransferData(kFilePromiseURLMime,
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getter_AddRefs(tmp), &dataSize);
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nsCOMPtr<nsISupportsString> supportsString =
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do_QueryInterface(tmp);
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if (!supportsString)
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return NS_ERROR_FAILURE;
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nsAutoString sourceURLString;
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supportsString->GetData(sourceURLString);
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if (sourceURLString.IsEmpty())
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return NS_ERROR_FAILURE;
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aTransferable->GetTransferData(kFilePromiseDestFilename,
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getter_AddRefs(tmp), &dataSize);
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supportsString = do_QueryInterface(tmp);
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if (!supportsString)
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return NS_ERROR_FAILURE;
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nsAutoString targetFilename;
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supportsString->GetData(targetFilename);
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if (targetFilename.IsEmpty())
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return NS_ERROR_FAILURE;
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// get the target directory from the kFilePromiseDirectoryMime
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// flavor
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nsCOMPtr<nsISupports> dirPrimitive;
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dataSize = 0;
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aTransferable->GetTransferData(kFilePromiseDirectoryMime,
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getter_AddRefs(dirPrimitive), &dataSize);
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nsCOMPtr<nsIFile> destDirectory = do_QueryInterface(dirPrimitive);
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if (!destDirectory)
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIFile> file;
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rv = destDirectory->Clone(getter_AddRefs(file));
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NS_ENSURE_SUCCESS(rv, rv);
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file->Append(targetFilename);
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bool isPrivate;
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aTransferable->GetIsPrivateData(&isPrivate);
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rv = SaveURIToFile(sourceURLString, file, isPrivate);
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// send back an nsIFile
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if (NS_SUCCEEDED(rv)) {
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CallQueryInterface(file, aData);
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*aDataLen = sizeof(nsIFile*);
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}
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}
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return rv;
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}
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DragDataProducer::DragDataProducer(nsPIDOMWindowOuter* aWindow,
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nsIContent* aTarget,
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nsIContent* aSelectionTargetNode,
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bool aIsAltKeyPressed)
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: mWindow(aWindow),
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mTarget(aTarget),
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mSelectionTargetNode(aSelectionTargetNode),
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mIsAltKeyPressed(aIsAltKeyPressed),
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mIsAnchor(false)
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{
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}
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//
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// FindParentLinkNode
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//
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// Finds the parent with the given link tag starting at |inNode|. If
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// it gets up to the root without finding it, we stop looking and
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// return null.
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//
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already_AddRefed<nsIContent>
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DragDataProducer::FindParentLinkNode(nsIContent* inNode)
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{
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nsIContent* content = inNode;
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if (!content) {
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// That must have been the document node; nothing else to do here;
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return nullptr;
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}
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for (; content; content = content->GetParent()) {
|
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if (nsContentUtils::IsDraggableLink(content)) {
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nsCOMPtr<nsIContent> ret = content;
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return ret.forget();
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}
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}
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return nullptr;
|
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}
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//
|
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// GetAnchorURL
|
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//
|
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nsresult
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DragDataProducer::GetAnchorURL(nsIContent* inNode, nsAString& outURL)
|
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{
|
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nsCOMPtr<nsIURI> linkURI;
|
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if (!inNode || !inNode->IsLink(getter_AddRefs(linkURI))) {
|
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// Not a link
|
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outURL.Truncate();
|
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return NS_OK;
|
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}
|
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|
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nsAutoCString spec;
|
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nsresult rv = linkURI->GetSpec(spec);
|
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NS_ENSURE_SUCCESS(rv, rv);
|
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CopyUTF8toUTF16(spec, outURL);
|
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return NS_OK;
|
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}
|
||||
|
||||
|
||||
//
|
||||
// CreateLinkText
|
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//
|
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// Creates the html for an anchor in the form
|
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// <a href="inURL">inText</a>
|
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//
|
||||
void
|
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DragDataProducer::CreateLinkText(const nsAString& inURL,
|
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const nsAString & inText,
|
||||
nsAString& outLinkText)
|
||||
{
|
||||
// use a temp var in case |inText| is the same string as
|
||||
// |outLinkText| to avoid overwriting it while building up the
|
||||
// string in pieces.
|
||||
nsAutoString linkText(NS_LITERAL_STRING("<a href=\"") +
|
||||
inURL +
|
||||
NS_LITERAL_STRING("\">") +
|
||||
inText +
|
||||
NS_LITERAL_STRING("</a>") );
|
||||
|
||||
outLinkText = linkText;
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// GetNodeString
|
||||
//
|
||||
// Gets the text associated with a node
|
||||
//
|
||||
void
|
||||
DragDataProducer::GetNodeString(nsIContent* inNode,
|
||||
nsAString & outNodeString)
|
||||
{
|
||||
nsCOMPtr<nsINode> node = inNode;
|
||||
|
||||
outNodeString.Truncate();
|
||||
|
||||
// use a range to get the text-equivalent of the node
|
||||
nsCOMPtr<nsIDocument> doc = node->OwnerDoc();
|
||||
mozilla::ErrorResult rv;
|
||||
RefPtr<nsRange> range = doc->CreateRange(rv);
|
||||
if (range) {
|
||||
range->SelectNode(*node, rv);
|
||||
range->ToString(outNodeString);
|
||||
}
|
||||
}
|
||||
|
||||
nsresult
|
||||
DragDataProducer::Produce(DataTransfer* aDataTransfer,
|
||||
bool* aCanDrag,
|
||||
nsISelection** aSelection,
|
||||
nsIContent** aDragNode)
|
||||
{
|
||||
NS_PRECONDITION(aCanDrag && aSelection && aDataTransfer && aDragNode,
|
||||
"null pointer passed to Produce");
|
||||
NS_ASSERTION(mWindow, "window not set");
|
||||
NS_ASSERTION(mSelectionTargetNode, "selection target node should have been set");
|
||||
|
||||
*aDragNode = nullptr;
|
||||
|
||||
nsresult rv;
|
||||
nsIContent* dragNode = nullptr;
|
||||
*aSelection = nullptr;
|
||||
|
||||
// Find the selection to see what we could be dragging and if what we're
|
||||
// dragging is in what is selected. If this is an editable textbox, use
|
||||
// the textbox's selection, otherwise use the window's selection.
|
||||
nsCOMPtr<nsISelection> selection;
|
||||
nsIContent* editingElement = mSelectionTargetNode->IsEditable() ?
|
||||
mSelectionTargetNode->GetEditingHost() : nullptr;
|
||||
nsCOMPtr<nsITextControlElement> textControl =
|
||||
nsITextControlElement::GetTextControlElementFromEditingHost(editingElement);
|
||||
if (textControl) {
|
||||
nsISelectionController* selcon = textControl->GetSelectionController();
|
||||
if (selcon) {
|
||||
selcon->GetSelection(nsISelectionController::SELECTION_NORMAL, getter_AddRefs(selection));
|
||||
}
|
||||
|
||||
if (!selection)
|
||||
return NS_OK;
|
||||
}
|
||||
else {
|
||||
selection = mWindow->GetSelection();
|
||||
if (!selection)
|
||||
return NS_OK;
|
||||
|
||||
// Check if the node is inside a form control. Don't set aCanDrag to false
|
||||
//however, as we still want to allow the drag.
|
||||
nsCOMPtr<nsIContent> findFormNode = mSelectionTargetNode;
|
||||
nsIContent* findFormParent = findFormNode->GetParent();
|
||||
while (findFormParent) {
|
||||
nsCOMPtr<nsIFormControl> form(do_QueryInterface(findFormParent));
|
||||
if (form && !form->AllowDraggableChildren()) {
|
||||
return NS_OK;
|
||||
}
|
||||
findFormParent = findFormParent->GetParent();
|
||||
}
|
||||
}
|
||||
|
||||
// if set, serialize the content under this node
|
||||
nsCOMPtr<nsIContent> nodeToSerialize;
|
||||
|
||||
nsCOMPtr<nsIDocShellTreeItem> dsti = mWindow->GetDocShell();
|
||||
const bool isChromeShell =
|
||||
dsti && dsti->ItemType() == nsIDocShellTreeItem::typeChrome;
|
||||
|
||||
// In chrome shells, only allow dragging inside editable areas.
|
||||
if (isChromeShell && !editingElement) {
|
||||
nsCOMPtr<nsIFrameLoaderOwner> flo = do_QueryInterface(mTarget);
|
||||
if (flo) {
|
||||
RefPtr<nsFrameLoader> fl = flo->GetFrameLoader();
|
||||
if (fl) {
|
||||
TabParent* tp = static_cast<TabParent*>(fl->GetRemoteBrowser());
|
||||
if (tp) {
|
||||
// We have a TabParent, so it may have data for dnd in case the child
|
||||
// process started a dnd session.
|
||||
tp->AddInitialDnDDataTo(aDataTransfer);
|
||||
}
|
||||
}
|
||||
}
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
if (isChromeShell && textControl) {
|
||||
// Only use the selection if the target node is in the selection.
|
||||
bool selectionContainsTarget = false;
|
||||
nsCOMPtr<nsIDOMNode> targetNode = do_QueryInterface(mSelectionTargetNode);
|
||||
selection->ContainsNode(targetNode, false, &selectionContainsTarget);
|
||||
if (!selectionContainsTarget)
|
||||
return NS_OK;
|
||||
|
||||
selection.swap(*aSelection);
|
||||
}
|
||||
else {
|
||||
// In content shells, a number of checks are made below to determine
|
||||
// whether an image or a link is being dragged. If so, add additional
|
||||
// data to the data transfer. This is also done for chrome shells, but
|
||||
// only when in a non-textbox editor.
|
||||
|
||||
bool haveSelectedContent = false;
|
||||
|
||||
// possible parent link node
|
||||
nsCOMPtr<nsIContent> parentLink;
|
||||
nsCOMPtr<nsIContent> draggedNode;
|
||||
|
||||
{
|
||||
// only drag form elements by using the alt key,
|
||||
// otherwise buttons and select widgets are hard to use
|
||||
|
||||
// Note that while <object> elements implement nsIFormControl, we should
|
||||
// really allow dragging them if they happen to be images.
|
||||
nsCOMPtr<nsIFormControl> form(do_QueryInterface(mTarget));
|
||||
if (form && !mIsAltKeyPressed && form->GetType() != NS_FORM_OBJECT) {
|
||||
*aCanDrag = false;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
draggedNode = mTarget;
|
||||
}
|
||||
|
||||
nsCOMPtr<nsIDOMHTMLAreaElement> area; // client-side image map
|
||||
nsCOMPtr<nsIImageLoadingContent> image;
|
||||
nsCOMPtr<nsIDOMHTMLAnchorElement> link;
|
||||
|
||||
nsCOMPtr<nsIContent> selectedImageOrLinkNode;
|
||||
GetDraggableSelectionData(selection, mSelectionTargetNode,
|
||||
getter_AddRefs(selectedImageOrLinkNode),
|
||||
&haveSelectedContent);
|
||||
|
||||
// either plain text or anchor text is selected
|
||||
if (haveSelectedContent) {
|
||||
selection.swap(*aSelection);
|
||||
} else if (selectedImageOrLinkNode) {
|
||||
// an image is selected
|
||||
image = do_QueryInterface(selectedImageOrLinkNode);
|
||||
} else {
|
||||
// nothing is selected -
|
||||
//
|
||||
// look for draggable elements under the mouse
|
||||
//
|
||||
// if the alt key is down, don't start a drag if we're in an
|
||||
// anchor because we want to do selection.
|
||||
parentLink = FindParentLinkNode(draggedNode);
|
||||
if (parentLink && mIsAltKeyPressed) {
|
||||
*aCanDrag = false;
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
area = do_QueryInterface(draggedNode);
|
||||
image = do_QueryInterface(draggedNode);
|
||||
link = do_QueryInterface(draggedNode);
|
||||
}
|
||||
|
||||
{
|
||||
// set for linked images, and links
|
||||
nsCOMPtr<nsIContent> linkNode;
|
||||
|
||||
if (area) {
|
||||
// use the alt text (or, if missing, the href) as the title
|
||||
HTMLAreaElement* areaElem = static_cast<HTMLAreaElement*>(area.get());
|
||||
areaElem->GetAttribute(NS_LITERAL_STRING("alt"), mTitleString);
|
||||
if (mTitleString.IsEmpty()) {
|
||||
// this can be a relative link
|
||||
areaElem->GetAttribute(NS_LITERAL_STRING("href"), mTitleString);
|
||||
}
|
||||
|
||||
// we'll generate HTML like <a href="absurl">alt text</a>
|
||||
mIsAnchor = true;
|
||||
|
||||
// gives an absolute link
|
||||
nsresult rv = GetAnchorURL(draggedNode, mUrlString);
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
mHtmlString.AssignLiteral("<a href=\"");
|
||||
mHtmlString.Append(mUrlString);
|
||||
mHtmlString.AppendLiteral("\">");
|
||||
mHtmlString.Append(mTitleString);
|
||||
mHtmlString.AppendLiteral("</a>");
|
||||
|
||||
dragNode = draggedNode;
|
||||
} else if (image) {
|
||||
mIsAnchor = true;
|
||||
// grab the href as the url, use alt text as the title of the
|
||||
// area if it's there. the drag data is the image tag and src
|
||||
// attribute.
|
||||
nsCOMPtr<nsIURI> imageURI;
|
||||
image->GetCurrentURI(getter_AddRefs(imageURI));
|
||||
if (imageURI) {
|
||||
nsAutoCString spec;
|
||||
rv = imageURI->GetSpec(spec);
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
CopyUTF8toUTF16(spec, mUrlString);
|
||||
}
|
||||
|
||||
nsCOMPtr<nsIDOMElement> imageElement(do_QueryInterface(image));
|
||||
// XXXbz Shouldn't we use the "title" attr for title? Using
|
||||
// "alt" seems very wrong....
|
||||
if (imageElement) {
|
||||
imageElement->GetAttribute(NS_LITERAL_STRING("alt"), mTitleString);
|
||||
}
|
||||
|
||||
if (mTitleString.IsEmpty()) {
|
||||
mTitleString = mUrlString;
|
||||
}
|
||||
|
||||
nsCOMPtr<imgIRequest> imgRequest;
|
||||
|
||||
// grab the image data, and its request.
|
||||
nsCOMPtr<imgIContainer> img =
|
||||
nsContentUtils::GetImageFromContent(image,
|
||||
getter_AddRefs(imgRequest));
|
||||
|
||||
nsCOMPtr<nsIMIMEService> mimeService =
|
||||
do_GetService("@mozilla.org/mime;1");
|
||||
|
||||
// Fix the file extension in the URL if necessary
|
||||
if (imgRequest && mimeService) {
|
||||
nsCOMPtr<nsIURI> imgUri;
|
||||
imgRequest->GetURI(getter_AddRefs(imgUri));
|
||||
|
||||
nsCOMPtr<nsIURL> imgUrl(do_QueryInterface(imgUri));
|
||||
|
||||
if (imgUrl) {
|
||||
nsAutoCString extension;
|
||||
imgUrl->GetFileExtension(extension);
|
||||
|
||||
nsXPIDLCString mimeType;
|
||||
imgRequest->GetMimeType(getter_Copies(mimeType));
|
||||
|
||||
nsCOMPtr<nsIMIMEInfo> mimeInfo;
|
||||
mimeService->GetFromTypeAndExtension(mimeType, EmptyCString(),
|
||||
getter_AddRefs(mimeInfo));
|
||||
|
||||
if (mimeInfo) {
|
||||
nsAutoCString spec;
|
||||
rv = imgUrl->GetSpec(spec);
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
// pass out the image source string
|
||||
CopyUTF8toUTF16(spec, mImageSourceString);
|
||||
|
||||
bool validExtension;
|
||||
if (extension.IsEmpty() ||
|
||||
NS_FAILED(mimeInfo->ExtensionExists(extension,
|
||||
&validExtension)) ||
|
||||
!validExtension) {
|
||||
// Fix the file extension in the URL
|
||||
nsresult rv = imgUrl->Clone(getter_AddRefs(imgUri));
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
imgUrl = do_QueryInterface(imgUri);
|
||||
|
||||
nsAutoCString primaryExtension;
|
||||
mimeInfo->GetPrimaryExtension(primaryExtension);
|
||||
|
||||
imgUrl->SetFileExtension(primaryExtension);
|
||||
}
|
||||
|
||||
nsAutoCString fileName;
|
||||
imgUrl->GetFileName(fileName);
|
||||
|
||||
NS_UnescapeURL(fileName);
|
||||
|
||||
// make the filename safe for the filesystem
|
||||
fileName.ReplaceChar(FILE_PATH_SEPARATOR FILE_ILLEGAL_CHARACTERS,
|
||||
'-');
|
||||
|
||||
CopyUTF8toUTF16(fileName, mImageDestFileName);
|
||||
|
||||
// and the image object
|
||||
mImage = img;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (parentLink) {
|
||||
// If we are dragging around an image in an anchor, then we
|
||||
// are dragging the entire anchor
|
||||
linkNode = parentLink;
|
||||
nodeToSerialize = linkNode;
|
||||
} else {
|
||||
nodeToSerialize = do_QueryInterface(draggedNode);
|
||||
}
|
||||
dragNode = nodeToSerialize;
|
||||
} else if (link) {
|
||||
// set linkNode. The code below will handle this
|
||||
linkNode = do_QueryInterface(link); // XXX test this
|
||||
GetNodeString(draggedNode, mTitleString);
|
||||
} else if (parentLink) {
|
||||
// parentLink will always be null if there's selected content
|
||||
linkNode = parentLink;
|
||||
nodeToSerialize = linkNode;
|
||||
} else if (!haveSelectedContent) {
|
||||
// nothing draggable
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
if (linkNode) {
|
||||
mIsAnchor = true;
|
||||
rv = GetAnchorURL(linkNode, mUrlString);
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
dragNode = linkNode;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (nodeToSerialize || *aSelection) {
|
||||
mHtmlString.Truncate();
|
||||
mContextString.Truncate();
|
||||
mInfoString.Truncate();
|
||||
mTitleString.Truncate();
|
||||
|
||||
nsCOMPtr<nsIDocument> doc = mWindow->GetDoc();
|
||||
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
|
||||
|
||||
// if we have selected text, use it in preference to the node
|
||||
nsCOMPtr<nsITransferable> transferable;
|
||||
if (*aSelection) {
|
||||
rv = nsCopySupport::GetTransferableForSelection(*aSelection, doc,
|
||||
getter_AddRefs(transferable));
|
||||
}
|
||||
else {
|
||||
rv = nsCopySupport::GetTransferableForNode(nodeToSerialize, doc,
|
||||
getter_AddRefs(transferable));
|
||||
}
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
nsCOMPtr<nsISupports> supports;
|
||||
nsCOMPtr<nsISupportsString> data;
|
||||
uint32_t dataSize;
|
||||
rv = transferable->GetTransferData(kHTMLMime, getter_AddRefs(supports),
|
||||
&dataSize);
|
||||
data = do_QueryInterface(supports);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
data->GetData(mHtmlString);
|
||||
}
|
||||
rv = transferable->GetTransferData(kHTMLContext, getter_AddRefs(supports),
|
||||
&dataSize);
|
||||
data = do_QueryInterface(supports);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
data->GetData(mContextString);
|
||||
}
|
||||
rv = transferable->GetTransferData(kHTMLInfo, getter_AddRefs(supports),
|
||||
&dataSize);
|
||||
data = do_QueryInterface(supports);
|
||||
if (NS_SUCCEEDED(rv)) {
|
||||
data->GetData(mInfoString);
|
||||
}
|
||||
rv = transferable->GetTransferData(kUnicodeMime, getter_AddRefs(supports),
|
||||
&dataSize);
|
||||
data = do_QueryInterface(supports);
|
||||
NS_ENSURE_SUCCESS(rv, rv); // require plain text at a minimum
|
||||
data->GetData(mTitleString);
|
||||
}
|
||||
|
||||
// default text value is the URL
|
||||
if (mTitleString.IsEmpty()) {
|
||||
mTitleString = mUrlString;
|
||||
}
|
||||
|
||||
// if we haven't constructed a html version, make one now
|
||||
if (mHtmlString.IsEmpty() && !mUrlString.IsEmpty())
|
||||
CreateLinkText(mUrlString, mTitleString, mHtmlString);
|
||||
|
||||
// if there is no drag node, which will be the case for a selection, just
|
||||
// use the selection target node.
|
||||
rv = AddStringsToDataTransfer(
|
||||
dragNode ? dragNode : mSelectionTargetNode.get(), aDataTransfer);
|
||||
NS_ENSURE_SUCCESS(rv, rv);
|
||||
|
||||
NS_IF_ADDREF(*aDragNode = dragNode);
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
void
|
||||
DragDataProducer::AddString(DataTransfer* aDataTransfer,
|
||||
const nsAString& aFlavor,
|
||||
const nsAString& aData,
|
||||
nsIPrincipal* aPrincipal)
|
||||
{
|
||||
RefPtr<nsVariantCC> variant = new nsVariantCC();
|
||||
variant->SetAsAString(aData);
|
||||
aDataTransfer->SetDataWithPrincipal(aFlavor, variant, 0, aPrincipal);
|
||||
}
|
||||
|
||||
nsresult
|
||||
DragDataProducer::AddStringsToDataTransfer(nsIContent* aDragNode,
|
||||
DataTransfer* aDataTransfer)
|
||||
{
|
||||
NS_ASSERTION(aDragNode, "adding strings for null node");
|
||||
|
||||
// set all of the data to have the principal of the node where the data came from
|
||||
nsIPrincipal* principal = aDragNode->NodePrincipal();
|
||||
|
||||
// add a special flavor if we're an anchor to indicate that we have
|
||||
// a URL in the drag data
|
||||
if (!mUrlString.IsEmpty() && mIsAnchor) {
|
||||
nsAutoString dragData(mUrlString);
|
||||
dragData.Append('\n');
|
||||
// Remove leading and trailing newlines in the title and replace them with
|
||||
// space in remaining positions - they confuse PlacesUtils::unwrapNodes
|
||||
// that expects url\ntitle formatted data for x-moz-url.
|
||||
nsAutoString title(mTitleString);
|
||||
title.Trim("\r\n");
|
||||
title.ReplaceChar("\r\n", ' ');
|
||||
dragData += title;
|
||||
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kURLMime), dragData, principal);
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kURLDataMime), mUrlString, principal);
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kURLDescriptionMime), mTitleString, principal);
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING("text/uri-list"), mUrlString, principal);
|
||||
}
|
||||
|
||||
// add a special flavor for the html context data
|
||||
if (!mContextString.IsEmpty())
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kHTMLContext), mContextString, principal);
|
||||
|
||||
// add a special flavor if we have html info data
|
||||
if (!mInfoString.IsEmpty())
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kHTMLInfo), mInfoString, principal);
|
||||
|
||||
// add the full html
|
||||
if (!mHtmlString.IsEmpty())
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kHTMLMime), mHtmlString, principal);
|
||||
|
||||
// add the plain text. we use the url for text/plain data if an anchor is
|
||||
// being dragged, rather than the title text of the link or the alt text for
|
||||
// an anchor image.
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kTextMime),
|
||||
mIsAnchor ? mUrlString : mTitleString, principal);
|
||||
|
||||
// add image data, if present. For now, all we're going to do with
|
||||
// this is turn it into a native data flavor, so indicate that with
|
||||
// a new flavor so as not to confuse anyone who is really registered
|
||||
// for image/gif or image/jpg.
|
||||
if (mImage) {
|
||||
RefPtr<nsVariantCC> variant = new nsVariantCC();
|
||||
variant->SetAsISupports(mImage);
|
||||
aDataTransfer->SetDataWithPrincipal(NS_LITERAL_STRING(kNativeImageMime),
|
||||
variant, 0, principal);
|
||||
|
||||
// assume the image comes from a file, and add a file promise. We
|
||||
// register ourselves as a nsIFlavorDataProvider, and will use the
|
||||
// GetFlavorData callback to save the image to disk.
|
||||
|
||||
nsCOMPtr<nsIFlavorDataProvider> dataProvider =
|
||||
new nsContentAreaDragDropDataProvider();
|
||||
if (dataProvider) {
|
||||
RefPtr<nsVariantCC> variant = new nsVariantCC();
|
||||
variant->SetAsISupports(dataProvider);
|
||||
aDataTransfer->SetDataWithPrincipal(NS_LITERAL_STRING(kFilePromiseMime),
|
||||
variant, 0, principal);
|
||||
}
|
||||
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kFilePromiseURLMime),
|
||||
mImageSourceString, principal);
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kFilePromiseDestFilename),
|
||||
mImageDestFileName, principal);
|
||||
|
||||
// if not an anchor, add the image url
|
||||
if (!mIsAnchor) {
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING(kURLDataMime), mUrlString, principal);
|
||||
AddString(aDataTransfer, NS_LITERAL_STRING("text/uri-list"), mUrlString, principal);
|
||||
}
|
||||
}
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
// note that this can return NS_OK, but a null out param (by design)
|
||||
// static
|
||||
nsresult
|
||||
DragDataProducer::GetDraggableSelectionData(nsISelection* inSelection,
|
||||
nsIContent* inRealTargetNode,
|
||||
nsIContent **outImageOrLinkNode,
|
||||
bool* outDragSelectedText)
|
||||
{
|
||||
NS_ENSURE_ARG(inSelection);
|
||||
NS_ENSURE_ARG(inRealTargetNode);
|
||||
NS_ENSURE_ARG_POINTER(outImageOrLinkNode);
|
||||
|
||||
*outImageOrLinkNode = nullptr;
|
||||
*outDragSelectedText = false;
|
||||
|
||||
bool selectionContainsTarget = false;
|
||||
|
||||
bool isCollapsed = false;
|
||||
inSelection->GetIsCollapsed(&isCollapsed);
|
||||
if (!isCollapsed) {
|
||||
nsCOMPtr<nsIDOMNode> realTargetNode = do_QueryInterface(inRealTargetNode);
|
||||
inSelection->ContainsNode(realTargetNode, false,
|
||||
&selectionContainsTarget);
|
||||
|
||||
if (selectionContainsTarget) {
|
||||
// track down the anchor node, if any, for the url
|
||||
nsCOMPtr<nsIDOMNode> selectionStart;
|
||||
inSelection->GetAnchorNode(getter_AddRefs(selectionStart));
|
||||
|
||||
nsCOMPtr<nsIDOMNode> selectionEnd;
|
||||
inSelection->GetFocusNode(getter_AddRefs(selectionEnd));
|
||||
|
||||
// look for a selection around a single node, like an image.
|
||||
// in this case, drag the image, rather than a serialization of the HTML
|
||||
// XXX generalize this to other draggable element types?
|
||||
if (selectionStart == selectionEnd) {
|
||||
bool hasChildren;
|
||||
selectionStart->HasChildNodes(&hasChildren);
|
||||
if (hasChildren) {
|
||||
// see if just one node is selected
|
||||
int32_t anchorOffset, focusOffset;
|
||||
inSelection->GetAnchorOffset(&anchorOffset);
|
||||
inSelection->GetFocusOffset(&focusOffset);
|
||||
if (abs(anchorOffset - focusOffset) == 1) {
|
||||
nsCOMPtr<nsIContent> selStartContent =
|
||||
do_QueryInterface(selectionStart);
|
||||
|
||||
if (selStartContent) {
|
||||
int32_t childOffset =
|
||||
(anchorOffset < focusOffset) ? anchorOffset : focusOffset;
|
||||
nsIContent *childContent =
|
||||
selStartContent->GetChildAt(childOffset);
|
||||
// if we find an image, we'll fall into the node-dragging code,
|
||||
// rather the the selection-dragging code
|
||||
if (nsContentUtils::IsDraggableImage(childContent)) {
|
||||
NS_ADDREF(*outImageOrLinkNode = childContent);
|
||||
return NS_OK;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// indicate that a link or text is selected
|
||||
*outDragSelectedText = true;
|
||||
}
|
||||
}
|
||||
|
||||
return NS_OK;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue