зеркало из https://github.com/mozilla/pjs.git
612 строки
19 KiB
C++
612 строки
19 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Mats Palmgren <mats.palmgren@bredband.net>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsFileControlFrame.h"
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#include "nsIContent.h"
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#include "prtypes.h"
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#include "nsIAtom.h"
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#include "nsPresContext.h"
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#include "nsGkAtoms.h"
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#include "nsWidgetsCID.h"
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#include "nsIComponentManager.h"
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#include "nsHTMLParts.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsIFormControl.h"
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#include "nsINameSpaceManager.h"
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#include "nsCOMPtr.h"
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#include "nsIDOMElement.h"
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#include "nsIDOMDocument.h"
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#include "nsIDocument.h"
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#include "nsIDOMMouseListener.h"
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#include "nsIPresShell.h"
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#include "nsIDOMHTMLInputElement.h"
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#include "nsXPCOM.h"
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#include "nsISupportsPrimitives.h"
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#include "nsIComponentManager.h"
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#include "nsPIDOMWindow.h"
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#include "nsIFilePicker.h"
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#include "nsIDOMMouseEvent.h"
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#include "nsINodeInfo.h"
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#include "nsIDOMEventTarget.h"
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#include "nsILocalFile.h"
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#include "nsIFileControlElement.h"
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#include "nsNodeInfoManager.h"
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#include "nsContentCreatorFunctions.h"
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#include "nsContentUtils.h"
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#include "nsDisplayList.h"
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#include "nsIDOMNSUIEvent.h"
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#include "nsIDOMEventGroup.h"
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#include "nsIDOM3EventTarget.h"
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#ifdef ACCESSIBILITY
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#include "nsIAccessibilityService.h"
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#endif
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#define SYNC_TEXT 0x1
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#define SYNC_BUTTON 0x2
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#define SYNC_BOTH 0x3
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nsIFrame*
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NS_NewFileControlFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsFileControlFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(nsFileControlFrame)
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nsFileControlFrame::nsFileControlFrame(nsStyleContext* aContext):
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nsBlockFrame(aContext),
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mTextFrame(nsnull),
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mCachedState(nsnull)
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{
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AddStateBits(NS_BLOCK_FLOAT_MGR);
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}
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nsFileControlFrame::~nsFileControlFrame()
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{
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if (mCachedState) {
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delete mCachedState;
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mCachedState = nsnull;
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}
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}
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NS_IMETHODIMP
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nsFileControlFrame::Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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nsresult rv = nsBlockFrame::Init(aContent, aParent, aPrevInFlow);
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NS_ENSURE_SUCCESS(rv, rv);
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mMouseListener = new MouseListener(this);
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NS_ENSURE_TRUE(mMouseListener, NS_ERROR_OUT_OF_MEMORY);
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return rv;
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}
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void
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nsFileControlFrame::Destroy()
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{
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mTextFrame = nsnull;
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ENSURE_TRUE(mContent);
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// remove mMouseListener as a mouse event listener (bug 40533, bug 355931)
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NS_NAMED_LITERAL_STRING(click, "click");
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nsCOMPtr<nsIDOMEventGroup> systemGroup;
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mContent->GetSystemEventGroup(getter_AddRefs(systemGroup));
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nsCOMPtr<nsIDOM3EventTarget> dom3Browse = do_QueryInterface(mBrowse);
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if (dom3Browse) {
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dom3Browse->RemoveGroupedEventListener(click, mMouseListener, PR_FALSE,
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systemGroup);
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nsContentUtils::DestroyAnonymousContent(&mBrowse);
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}
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nsCOMPtr<nsIDOM3EventTarget> dom3TextContent =
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do_QueryInterface(mTextContent);
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if (dom3TextContent) {
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dom3TextContent->RemoveGroupedEventListener(click, mMouseListener, PR_FALSE,
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systemGroup);
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nsContentUtils::DestroyAnonymousContent(&mTextContent);
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}
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mMouseListener->ForgetFrame();
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nsBlockFrame::Destroy();
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}
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nsresult
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nsFileControlFrame::CreateAnonymousContent(nsTArray<nsIContent*>& aElements)
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{
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// Get the NodeInfoManager and tag necessary to create input elements
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nsCOMPtr<nsIDocument> doc = mContent->GetDocument();
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nsCOMPtr<nsINodeInfo> nodeInfo;
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nodeInfo = doc->NodeInfoManager()->GetNodeInfo(nsGkAtoms::input, nsnull,
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kNameSpaceID_XHTML);
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// Create the text content
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NS_NewHTMLElement(getter_AddRefs(mTextContent), nodeInfo, PR_FALSE);
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if (!mTextContent)
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return NS_ERROR_OUT_OF_MEMORY;
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// Mark the element to be native anonymous before setting any attributes.
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mTextContent->SetNativeAnonymous();
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mTextContent->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
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NS_LITERAL_STRING("text"), PR_FALSE);
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nsCOMPtr<nsIDOMHTMLInputElement> textControl = do_QueryInterface(mTextContent);
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if (textControl) {
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nsCOMPtr<nsIFileControlElement> fileControl = do_QueryInterface(mContent);
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if (fileControl) {
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// Initialize value when we create the content in case the value was set
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// before we got here
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nsAutoString value;
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fileControl->GetFileName(value);
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textControl->SetValue(value);
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}
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textControl->SetTabIndex(-1);
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textControl->SetReadOnly(PR_TRUE);
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}
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if (!aElements.AppendElement(mTextContent))
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return NS_ERROR_OUT_OF_MEMORY;
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NS_NAMED_LITERAL_STRING(click, "click");
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nsCOMPtr<nsIDOMEventGroup> systemGroup;
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mContent->GetSystemEventGroup(getter_AddRefs(systemGroup));
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nsCOMPtr<nsIDOM3EventTarget> dom3TextContent =
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do_QueryInterface(mTextContent);
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NS_ENSURE_STATE(dom3TextContent);
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// Register as an event listener of the textbox
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// to open file dialog on mouse click
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dom3TextContent->AddGroupedEventListener(click, mMouseListener, PR_FALSE,
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systemGroup);
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// Create the browse button
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NS_NewHTMLElement(getter_AddRefs(mBrowse), nodeInfo, PR_FALSE);
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if (!mBrowse)
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return NS_ERROR_OUT_OF_MEMORY;
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// Mark the element to be native anonymous before setting any attributes.
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mBrowse->SetNativeAnonymous();
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mBrowse->SetAttr(kNameSpaceID_None, nsGkAtoms::type,
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NS_LITERAL_STRING("button"), PR_FALSE);
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nsCOMPtr<nsIDOMHTMLInputElement> fileContent = do_QueryInterface(mContent);
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nsCOMPtr<nsIDOMHTMLInputElement> browseControl = do_QueryInterface(mBrowse);
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if (fileContent && browseControl) {
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PRInt32 tabIndex;
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nsAutoString accessKey;
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fileContent->GetAccessKey(accessKey);
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browseControl->SetAccessKey(accessKey);
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fileContent->GetTabIndex(&tabIndex);
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browseControl->SetTabIndex(tabIndex);
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}
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if (!aElements.AppendElement(mBrowse))
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return NS_ERROR_OUT_OF_MEMORY;
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nsCOMPtr<nsIDOM3EventTarget> dom3Browse = do_QueryInterface(mBrowse);
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NS_ENSURE_STATE(dom3Browse);
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// Register as an event listener of the button
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// to open file dialog on mouse click
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dom3Browse->AddGroupedEventListener(click, mMouseListener, PR_FALSE,
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systemGroup);
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SyncAttr(kNameSpaceID_None, nsGkAtoms::size, SYNC_TEXT);
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SyncAttr(kNameSpaceID_None, nsGkAtoms::disabled, SYNC_BOTH);
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return NS_OK;
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}
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NS_QUERYFRAME_HEAD(nsFileControlFrame)
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NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
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NS_QUERYFRAME_ENTRY(nsIFormControlFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
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void
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nsFileControlFrame::SetFocus(PRBool aOn, PRBool aRepaint)
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{
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}
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/**
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* This is called when our browse button is clicked
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*/
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NS_IMETHODIMP
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nsFileControlFrame::MouseListener::MouseClick(nsIDOMEvent* aMouseEvent)
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{
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NS_ASSERTION(mFrame, "We should have been unregistered");
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// only allow the left button
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nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
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nsCOMPtr<nsIDOMNSUIEvent> uiEvent = do_QueryInterface(aMouseEvent);
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NS_ENSURE_STATE(uiEvent);
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PRBool defaultPrevented = PR_FALSE;
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uiEvent->GetPreventDefault(&defaultPrevented);
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if (defaultPrevented) {
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return NS_OK;
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}
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PRUint16 whichButton;
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if (NS_FAILED(mouseEvent->GetButton(&whichButton)) || whichButton != 0) {
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return NS_OK;
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}
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PRInt32 clickCount;
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if (NS_FAILED(mouseEvent->GetDetail(&clickCount)) || clickCount > 1) {
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return NS_OK;
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}
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nsresult result;
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// Get parent nsIDOMWindowInternal object.
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nsIContent* content = mFrame->GetContent();
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if (!content)
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return NS_ERROR_FAILURE;
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nsCOMPtr<nsIDocument> doc = content->GetDocument();
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if (!doc)
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return NS_ERROR_FAILURE;
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// Get Loc title
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nsXPIDLString title;
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nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
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"FileUpload", title);
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nsCOMPtr<nsIFilePicker> filePicker = do_CreateInstance("@mozilla.org/filepicker;1");
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if (!filePicker)
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return NS_ERROR_FAILURE;
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nsPIDOMWindow* win = doc->GetWindow();
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if (!win) {
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return NS_ERROR_FAILURE;
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}
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result = filePicker->Init(win, title, nsIFilePicker::modeOpen);
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if (NS_FAILED(result))
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return result;
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// Set filter "All Files"
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filePicker->AppendFilters(nsIFilePicker::filterAll);
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// Set default directry and filename
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nsAutoString defaultName;
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mFrame->GetFormProperty(nsGkAtoms::value, defaultName);
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nsCOMPtr<nsILocalFile> currentFile = do_CreateInstance("@mozilla.org/file/local;1");
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if (currentFile && !defaultName.IsEmpty()) {
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result = currentFile->InitWithPath(defaultName);
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if (NS_SUCCEEDED(result)) {
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nsAutoString leafName;
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currentFile->GetLeafName(leafName);
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if (!leafName.IsEmpty()) {
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filePicker->SetDefaultString(leafName);
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}
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// set directory
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nsCOMPtr<nsIFile> parentFile;
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currentFile->GetParent(getter_AddRefs(parentFile));
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if (parentFile) {
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nsCOMPtr<nsILocalFile> parentLocalFile = do_QueryInterface(parentFile, &result);
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if (parentLocalFile)
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filePicker->SetDisplayDirectory(parentLocalFile);
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}
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}
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}
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// Tell our textframe to remember the currently focused value
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mFrame->mTextFrame->InitFocusedValue();
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// Open dialog
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PRInt16 mode;
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result = filePicker->Show(&mode);
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if (NS_FAILED(result))
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return result;
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if (mode == nsIFilePicker::returnCancel)
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return NS_OK;
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if (!mFrame) {
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// The frame got destroyed while the filepicker was up. Don't do
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// anything here.
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// (This listener itself can't be destroyed because the event listener
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// manager holds a strong reference to us while it fires the event.)
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return NS_OK;
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}
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// Set property
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nsCOMPtr<nsILocalFile> localFile;
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result = filePicker->GetFile(getter_AddRefs(localFile));
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if (localFile) {
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nsAutoString unicodePath;
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result = localFile->GetPath(unicodePath);
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if (!unicodePath.IsEmpty()) {
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// Tell mTextFrame that this update of the value is a user initiated
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// change. Otherwise it'll think that the value is being set by a script
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// and not fire onchange when it should.
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PRBool oldState = mFrame->mTextFrame->GetFireChangeEventState();
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mFrame->mTextFrame->SetFireChangeEventState(PR_TRUE);
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nsCOMPtr<nsIFileControlElement> fileControl = do_QueryInterface(content);
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if (fileControl) {
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fileControl->SetFileName(unicodePath);
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}
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mFrame->mTextFrame->SetFireChangeEventState(oldState);
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// May need to fire an onchange here
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mFrame->mTextFrame->CheckFireOnChange();
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return NS_OK;
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}
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}
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return NS_FAILED(result) ? result : NS_ERROR_FAILURE;
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}
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nscoord
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nsFileControlFrame::GetMinWidth(nsIRenderingContext *aRenderingContext)
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{
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nscoord result;
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DISPLAY_MIN_WIDTH(this, result);
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// Our min width is our pref width
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result = GetPrefWidth(aRenderingContext);
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return result;
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}
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NS_IMETHODIMP nsFileControlFrame::Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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DO_GLOBAL_REFLOW_COUNT("nsFileControlFrame");
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DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
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aStatus = NS_FRAME_COMPLETE;
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if (mState & NS_FRAME_FIRST_REFLOW) {
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mTextFrame = GetTextControlFrame(aPresContext, this);
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NS_ENSURE_TRUE(mTextFrame, NS_ERROR_UNEXPECTED);
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if (mCachedState) {
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mTextFrame->SetFormProperty(nsGkAtoms::value, *mCachedState);
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delete mCachedState;
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mCachedState = nsnull;
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}
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}
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// nsBlockFrame takes care of all our reflow
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return nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState,
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aStatus);
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}
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nsNewFrame*
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nsFileControlFrame::GetTextControlFrame(nsPresContext* aPresContext, nsIFrame* aStart)
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{
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nsNewFrame* result = nsnull;
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#ifndef DEBUG_NEWFRAME
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// find the text control frame.
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nsIFrame* childFrame = aStart->GetFirstChild(nsnull);
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while (childFrame) {
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// see if the child is a text control
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nsCOMPtr<nsIFormControl> formCtrl =
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do_QueryInterface(childFrame->GetContent());
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if (formCtrl && formCtrl->GetType() == NS_FORM_INPUT_TEXT) {
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result = (nsNewFrame*)childFrame;
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}
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// if not continue looking
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nsNewFrame* frame = GetTextControlFrame(aPresContext, childFrame);
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if (frame)
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result = frame;
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childFrame = childFrame->GetNextSibling();
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}
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return result;
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#else
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return nsnull;
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#endif
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}
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PRIntn
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nsFileControlFrame::GetSkipSides() const
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{
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return 0;
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}
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void
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nsFileControlFrame::SyncAttr(PRInt32 aNameSpaceID, nsIAtom* aAttribute,
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PRInt32 aWhichControls)
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{
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nsAutoString value;
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if (mContent->GetAttr(aNameSpaceID, aAttribute, value)) {
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if (aWhichControls & SYNC_TEXT && mTextContent) {
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mTextContent->SetAttr(aNameSpaceID, aAttribute, value, PR_TRUE);
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}
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if (aWhichControls & SYNC_BUTTON && mBrowse) {
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mBrowse->SetAttr(aNameSpaceID, aAttribute, value, PR_TRUE);
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}
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} else {
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if (aWhichControls & SYNC_TEXT && mTextContent) {
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mTextContent->UnsetAttr(aNameSpaceID, aAttribute, PR_TRUE);
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}
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if (aWhichControls & SYNC_BUTTON && mBrowse) {
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mBrowse->UnsetAttr(aNameSpaceID, aAttribute, PR_TRUE);
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}
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}
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}
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NS_IMETHODIMP
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nsFileControlFrame::AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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// propagate disabled to text / button inputs
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if (aNameSpaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::disabled) {
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SyncAttr(aNameSpaceID, aAttribute, SYNC_BOTH);
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// propagate size to text
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} else if (aAttribute == nsGkAtoms::size) {
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SyncAttr(aNameSpaceID, aAttribute, SYNC_TEXT);
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} else if (aAttribute == nsGkAtoms::tabindex) {
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SyncAttr(aNameSpaceID, aAttribute, SYNC_BUTTON);
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}
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}
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return nsBlockFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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PRBool
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nsFileControlFrame::IsLeaf() const
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{
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return PR_TRUE;
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}
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#ifdef NS_DEBUG
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NS_IMETHODIMP
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nsFileControlFrame::GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("FileControl"), aResult);
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}
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#endif
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nsresult
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nsFileControlFrame::SetFormProperty(nsIAtom* aName,
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const nsAString& aValue)
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{
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if (nsGkAtoms::value == aName) {
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if (mTextFrame) {
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mTextFrame->SetValue(aValue);
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} else {
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if (mCachedState) delete mCachedState;
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mCachedState = new nsString(aValue);
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NS_ENSURE_TRUE(mCachedState, NS_ERROR_OUT_OF_MEMORY);
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}
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}
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return NS_OK;
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}
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nsresult
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nsFileControlFrame::GetFormProperty(nsIAtom* aName, nsAString& aValue) const
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{
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aValue.Truncate(); // initialize out param
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if (nsGkAtoms::value == aName) {
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NS_ASSERTION(!mCachedState || !mTextFrame,
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"If we have a cached state, we better have no mTextFrame");
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if (mCachedState) {
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aValue.Assign(*mCachedState);
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} else {
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nsCOMPtr<nsIFileControlElement> fileControl =
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do_QueryInterface(mContent);
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if (fileControl) {
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fileControl->GetFileName(aValue);
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}
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsFileControlFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists)
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{
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// box-shadow
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if (GetStyleBorder()->mBoxShadow) {
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nsresult rv = aLists.BorderBackground()->AppendNewToTop(new (aBuilder)
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nsDisplayBoxShadowOuter(this));
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NS_ENSURE_SUCCESS(rv, rv);
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}
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// Our background is inherited to the text input, and we don't really want to
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// paint it or out padding and borders (which we never have anyway, per
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// styles in forms.css) -- doing it just makes us look ugly in some cases and
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// has no effect in others.
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nsDisplayListCollection tempList;
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nsresult rv = nsBlockFrame::BuildDisplayList(aBuilder, aDirtyRect, tempList);
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if (NS_FAILED(rv))
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return rv;
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tempList.BorderBackground()->DeleteAll();
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// Clip height only
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nsRect clipRect(aBuilder->ToReferenceFrame(this), GetSize());
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clipRect.width = GetOverflowRect().XMost();
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rv = OverflowClip(aBuilder, tempList, aLists, clipRect);
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NS_ENSURE_SUCCESS(rv, rv);
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// Disabled file controls don't pass mouse events to their children, so we
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// put an invisible item in the display list above the children
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// just to catch events
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// REVIEW: I'm not sure why we do this, but that's what nsFileControlFrame::
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// GetFrameForPoint was doing
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if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::disabled) &&
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IsVisibleForPainting(aBuilder)) {
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nsDisplayItem* item = new (aBuilder) nsDisplayEventReceiver(this);
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if (!item)
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return NS_ERROR_OUT_OF_MEMORY;
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aLists.Content()->AppendToTop(item);
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}
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return DisplaySelectionOverlay(aBuilder, aLists);
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}
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#ifdef ACCESSIBILITY
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NS_IMETHODIMP nsFileControlFrame::GetAccessible(nsIAccessible** aAccessible)
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{
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// Accessible object exists just to hold onto its children, for later shutdown
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nsCOMPtr<nsIAccessibilityService> accService = do_GetService("@mozilla.org/accessibilityService;1");
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if (accService) {
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return accService->CreateHTMLGenericAccessible(static_cast<nsIFrame*>(this), aAccessible);
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}
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return NS_ERROR_FAILURE;
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}
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#endif
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////////////////////////////////////////////////////////////
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// Mouse listener implementation
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NS_IMPL_ISUPPORTS2(nsFileControlFrame::MouseListener,
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nsIDOMMouseListener,
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nsIDOMEventListener)
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