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gecko-dev/layout/base/nsDocumentViewer.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#include "nslayout.h"
#include "nsCOMPtr.h"
#include "nsCRT.h"
#include "nsString.h"
#include "nsISupports.h"
#include "nsIContent.h"
#include "nsIContentViewerContainer.h"
#include "nsIDocumentViewer.h"
#include "nsIDOMWindow.h"
#include "nsIImageGroup.h"
#include "nsIImageObserver.h"
#include "nsIDocument.h"
#include "nsIPresContext.h"
#include "nsIPresShell.h"
#include "nsIStyleSet.h"
#include "nsIStyleSheet.h"
#include "nsIFrame.h"
#include "nsIScriptGlobalObjectOwner.h"
#include "nsIScriptGlobalObject.h"
#include "nsILinkHandler.h"
#include "nsIDOMDocument.h"
#include "nsIDOMSelectionListener.h"
#include "nsIDOMHTMLDocument.h"
#include "nsIDOMHTMLElement.h"
#include "nsIDOMRange.h"
#include "nsLayoutCID.h"
#include "nsViewsCID.h"
#include "nsWidgetsCID.h"
#include "nsGfxCIID.h"
#include "nsIDeviceContext.h"
#include "nsIDeviceContextSpec.h"
#include "nsIDeviceContextSpecFactory.h"
#include "nsIViewManager.h"
#include "nsIView.h"
#include "nsIPref.h"
#include "nsIPageSequenceFrame.h"
#include "nsIURL.h"
#include "nsIWebShell.h"
#include "nsIContentViewerEdit.h"
#include "nsIContentViewerFile.h"
#include "nsIMarkupDocumentViewer.h"
#include "nsIInterfaceRequestor.h"
#include "nsIDocShellTreeItem.h"
#include "nsIDocShellTreeNode.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIDocShell.h"
#include "nsIFrameDebug.h"
#include "nsIServiceManager.h"
#include "nsIEventQueueService.h"
#include "nsIEventQueue.h"
static NS_DEFINE_CID(kEventQueueService, NS_EVENTQUEUESERVICE_CID);
#ifdef NS_DEBUG
#undef NOISY_VIEWER
#else
#undef NOISY_VIEWER
#endif
class DocumentViewerImpl;
// a small delegate class used to avoid circular references
#ifdef XP_MAC
#pragma mark ** nsDocViwerSelectionListener **
#endif
class nsDocViwerSelectionListener : public nsIDOMSelectionListener
{
public:
// nsISupports interface...
NS_DECL_ISUPPORTS
// nsIDOMSelectionListerner interface
NS_DECL_IDOMSELECTIONLISTENER
nsDocViwerSelectionListener()
: mDocViewer(NULL)
, mGotSelectionState(PR_FALSE)
, mSelectionWasCollapsed(PR_FALSE)
{
NS_INIT_REFCNT();
}
virtual ~nsDocViwerSelectionListener() {}
nsresult Init(DocumentViewerImpl *aDocViewer);
protected:
DocumentViewerImpl* mDocViewer;
PRPackedBool mGotSelectionState;
PRPackedBool mSelectionWasCollapsed;
};
#ifdef XP_MAC
#pragma mark ** DocumentViewerImpl **
#endif
class DocumentViewerImpl : public nsIDocumentViewer,
public nsIContentViewerEdit,
public nsIContentViewerFile,
public nsIMarkupDocumentViewer,
public nsIImageGroupObserver
{
friend class nsDocViwerSelectionListener;
public:
DocumentViewerImpl();
DocumentViewerImpl(nsIPresContext* aPresContext);
NS_DECL_AND_IMPL_ZEROING_OPERATOR_NEW
// nsISupports interface...
NS_DECL_ISUPPORTS
// nsIContentViewer interface...
NS_IMETHOD Init(nsIWidget* aParentWidget,
nsIDeviceContext* aDeviceContext,
const nsRect& aBounds);
NS_IMETHOD BindToDocument(nsISupports* aDoc, const char* aCommand);
NS_IMETHOD SetContainer(nsISupports* aContainer);
NS_IMETHOD GetContainer(nsISupports** aContainerResult);
NS_IMETHOD Stop(void);
NS_IMETHOD GetBounds(nsRect& aResult);
NS_IMETHOD SetBounds(const nsRect& aBounds);
NS_IMETHOD Move(PRInt32 aX, PRInt32 aY);
NS_IMETHOD Show();
NS_IMETHOD Hide();
NS_IMETHOD SetEnableRendering(PRBool aOn);
NS_IMETHOD GetEnableRendering(PRBool* aResult);
// nsIDocumentViewer interface...
NS_IMETHOD SetUAStyleSheet(nsIStyleSheet* aUAStyleSheet);
NS_IMETHOD GetDocument(nsIDocument*& aResult);
NS_IMETHOD GetPresShell(nsIPresShell*& aResult);
NS_IMETHOD GetPresContext(nsIPresContext*& aResult);
NS_IMETHOD CreateDocumentViewerUsing(nsIPresContext* aPresContext,
nsIDocumentViewer*& aResult);
// nsIContentViewerEdit
NS_DECL_NSICONTENTVIEWEREDIT
// nsIContentViewerFile
NS_DECL_NSICONTENTVIEWERFILE
// nsIMarkupDocumentViewer
NS_DECL_NSIMARKUPDOCUMENTVIEWER
// nsIImageGroupObserver interface
virtual void Notify(nsIImageGroup *aImageGroup,
nsImageGroupNotification aNotificationType);
protected:
virtual ~DocumentViewerImpl();
private:
void ForceRefresh(void);
nsresult CreateStyleSet(nsIDocument* aDocument, nsIStyleSet** aStyleSet);
nsresult MakeWindow(nsIWidget* aParentWidget,
const nsRect& aBounds);
nsresult GetDocumentSelection(nsIDOMSelection **aSelection);
//
// The following three methods are used for printing...
//
void DocumentReadyForPrinting();
static void PR_CALLBACK HandlePLEvent(PLEvent* aEvent);
static void PR_CALLBACK DestroyPLEvent(PLEvent* aEvent);
protected:
// IMPORTANT: The ownership implicit in the following member
// variables has been explicitly checked and set using nsCOMPtr
// for owning pointers and raw COM interface pointers for weak
// (ie, non owning) references. If you add any members to this
// class, please make the ownership explicit (pinkerton, scc).
nsISupports* mContainer; // [WEAK] it owns me!
nsCOMPtr<nsIDeviceContext> mDeviceContext; // ??? can't hurt, but...
nsIView* mView; // [WEAK] cleaned up by view mgr
// the following six items are explicitly in this order
// so they will be destroyed in the reverse order (pinkerton, scc)
nsCOMPtr<nsIDocument> mDocument;
nsCOMPtr<nsIWidget> mWindow; // ??? should we really own it?
nsCOMPtr<nsIViewManager> mViewManager;
nsCOMPtr<nsIPresContext> mPresContext;
nsCOMPtr<nsIPresShell> mPresShell;
nsCOMPtr<nsIStyleSheet> mUAStyleSheet;
nsCOMPtr<nsIDOMSelectionListener> mSelectionListener;
PRBool mEnableRendering;
PRInt16 mNumURLStarts;
PRBool mIsPrinting;
// printing members
nsIDeviceContext *mPrintDC;
nsIPresContext *mPrintPC;
nsIStyleSet *mPrintSS;
nsIPresShell *mPrintPS;
nsIViewManager *mPrintVM;
nsIView *mPrintView;
FILE *mFilePointer; // a file where information can go to when printing
nsCOMPtr<nsIPrintListener> mPrintListener; // An observer for printing...
// document management data
// these items are specific to markup documents (html and xml)
// may consider splitting these out into a subclass
PRBool mAllowPlugins;
/* character set member data */
nsString mDefaultCharacterSet;
nsString mHintCharset;
nsCharsetSource mHintCharsetSource;
nsString mForceCharacterSet;
};
// Class IDs
static NS_DEFINE_CID(kViewManagerCID, NS_VIEW_MANAGER_CID);
static NS_DEFINE_CID(kScrollingViewCID, NS_SCROLLING_VIEW_CID);
static NS_DEFINE_CID(kWidgetCID, NS_CHILD_CID);
static NS_DEFINE_CID(kViewCID, NS_VIEW_CID);
nsresult
NS_NewDocumentViewer(nsIDocumentViewer** aResult)
{
NS_PRECONDITION(aResult, "null OUT ptr");
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
DocumentViewerImpl* it = new DocumentViewerImpl();
if (nsnull == it) {
*aResult = nsnull;
return NS_ERROR_OUT_OF_MEMORY;
}
return it->QueryInterface(NS_GET_IID(nsIDocumentViewer), (void**) aResult);
}
// Note: operator new zeros our memory
DocumentViewerImpl::DocumentViewerImpl()
{
NS_INIT_REFCNT();
mEnableRendering = PR_TRUE;
mFilePointer = nsnull;
mPrintListener = nsnull;
}
DocumentViewerImpl::DocumentViewerImpl(nsIPresContext* aPresContext)
: mPresContext(dont_QueryInterface(aPresContext))
{
NS_INIT_REFCNT();
mHintCharset = "";
mHintCharsetSource = kCharsetUninitialized;
mForceCharacterSet = "";
mAllowPlugins = PR_TRUE;
mEnableRendering = PR_TRUE;
mFilePointer = nsnull;
}
// ISupports implementation...
NS_IMPL_ADDREF(DocumentViewerImpl)
NS_IMPL_RELEASE(DocumentViewerImpl)
nsresult
DocumentViewerImpl::QueryInterface(REFNSIID aIID, void** aInstancePtr)
{
if (NULL == aInstancePtr) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(NS_GET_IID(nsIContentViewer))) {
nsIContentViewer* tmp = this;
*aInstancePtr = (void*)tmp;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIDocumentViewer))) {
nsIDocumentViewer* tmp = this;
*aInstancePtr = (void*) tmp;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIMarkupDocumentViewer))) {
nsIMarkupDocumentViewer* tmp = this;
*aInstancePtr = (void*) tmp;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIContentViewerFile))) {
nsIContentViewerFile* tmp = this;
*aInstancePtr = (void*) tmp;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsIContentViewerEdit))) {
nsIContentViewerEdit* tmp = this;
*aInstancePtr = (void*) tmp;
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(NS_GET_IID(nsISupports))) {
nsIContentViewer* tmp1 = this;
nsISupports* tmp2 = tmp1;
*aInstancePtr = (void*) tmp2;
NS_ADDREF_THIS();
return NS_OK;
}
return NS_NOINTERFACE;
}
DocumentViewerImpl::~DocumentViewerImpl()
{
if (mDocument) {
// Break global object circular reference on the document created
// in the DocViewer Init
nsCOMPtr<nsIScriptGlobalObject> globalObject;
mDocument->GetScriptGlobalObject(getter_AddRefs(globalObject));
if (globalObject) {
globalObject->SetNewDocument(nsnull);
}
// out of band cleanup of webshell
mDocument->SetScriptGlobalObject(nsnull);
}
if (mPresContext) {
mPresContext->SetContainer(nsnull);
mPresContext->SetLinkHandler(nsnull);
}
if (mDeviceContext)
mDeviceContext->FlushFontCache();
if (mPresShell) {
// Break circular reference (or something)
mPresShell->EndObservingDocument();
}
}
/*
* This method is called by the Document Loader once a document has
* been created for a particular data stream... The content viewer
* must cache this document for later use when Init(...) is called.
*/
NS_IMETHODIMP
DocumentViewerImpl::BindToDocument(nsISupports *aDoc, const char *aCommand)
{
NS_PRECONDITION(!mDocument, "Viewer is already bound to a document!");
#ifdef NOISY_VIEWER
printf("DocumentViewerImpl::BindToDocument\n");
#endif
nsresult rv;
mDocument = do_QueryInterface(aDoc,&rv);
return rv;
}
NS_IMETHODIMP
DocumentViewerImpl::SetContainer(nsISupports* aContainer)
{
mContainer = aContainer;
if (mPresContext) {
mPresContext->SetContainer(aContainer);
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::GetContainer(nsISupports** aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = mContainer;
NS_IF_ADDREF(*aResult);
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::Init(nsIWidget* aParentWidget,
nsIDeviceContext* aDeviceContext,
const nsRect& aBounds)
{
nsresult rv;
if (!mDocument) {
return NS_ERROR_NULL_POINTER;
}
mDeviceContext = dont_QueryInterface(aDeviceContext);
PRBool makeCX = PR_FALSE;
if (!mPresContext) {
// Create presentation context
rv = NS_NewGalleyContext(getter_AddRefs(mPresContext));
if (NS_FAILED(rv)) return rv;
mPresContext->Init(aDeviceContext);
makeCX = PR_TRUE;
}
nsCOMPtr<nsIInterfaceRequestor> requestor(do_QueryInterface(mContainer));
if (requestor) {
nsCOMPtr<nsILinkHandler> linkHandler;
requestor->GetInterface(NS_GET_IID(nsILinkHandler),
getter_AddRefs(linkHandler));
mPresContext->SetContainer(mContainer);
mPresContext->SetLinkHandler(linkHandler);
// Set script-context-owner in the document
nsCOMPtr<nsIScriptGlobalObjectOwner> owner;
requestor->GetInterface(NS_GET_IID(nsIScriptGlobalObjectOwner),
getter_AddRefs(owner));
if (nsnull != owner) {
nsCOMPtr<nsIScriptGlobalObject> global;
rv = owner->GetScriptGlobalObject(getter_AddRefs(global));
if (NS_SUCCEEDED(rv) && (nsnull != global)) {
mDocument->SetScriptGlobalObject(global);
nsCOMPtr<nsIDOMDocument> domdoc(do_QueryInterface(mDocument));
if (nsnull != domdoc) {
global->SetNewDocument(domdoc);
}
}
}
}
// Create the ViewManager and Root View...
rv = MakeWindow(aParentWidget, aBounds);
if (NS_FAILED(rv)) return rv;
// Create the style set...
nsIStyleSet* styleSet;
rv = CreateStyleSet(mDocument, &styleSet);
if (NS_FAILED(rv)) return rv;
// Now make the shell for the document
rv = mDocument->CreateShell(mPresContext, mViewManager, styleSet,
getter_AddRefs(mPresShell));
NS_RELEASE(styleSet);
if (NS_FAILED(rv)) return rv;
mPresShell->BeginObservingDocument();
// Initialize our view manager
nsRect bounds;
mWindow->GetBounds(bounds);
nscoord width = bounds.width;
nscoord height = bounds.height;
float p2t;
mPresContext->GetPixelsToTwips(&p2t);
width = NSIntPixelsToTwips(width, p2t);
height = NSIntPixelsToTwips(height, p2t);
mViewManager->DisableRefresh();
mViewManager->SetWindowDimensions(width, height);
if (!makeCX) {
// Make shell an observer for next time
// XXX - we observe the docuement always, see above after preshell is created
// mPresShell->BeginObservingDocument();
//XXX I don't think this should be done *here*; and why paint nothing
//(which turns out to cause black flashes!)???
// Resize-reflow this time
mPresShell->InitialReflow(width, height);
// Now trigger a refresh
if (mEnableRendering) {
mViewManager->EnableRefresh(NS_VMREFRESH_IMMEDIATE);
}
}
// now register ourselves as a selection listener, so that we get called
// when the selection changes in the window
nsDocViwerSelectionListener *selectionListener;
NS_NEWXPCOM(selectionListener, nsDocViwerSelectionListener);
if (!selectionListener) return NS_ERROR_OUT_OF_MEMORY;
selectionListener->Init(this);
// this is the owning reference. The nsCOMPtr will take care of releasing
// our ref to the listener on destruction.
NS_ADDREF(selectionListener);
rv = selectionListener->QueryInterface(NS_GET_IID(nsIDOMSelectionListener), getter_AddRefs(mSelectionListener));
NS_RELEASE(selectionListener);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIDOMSelection> selection;
rv = GetDocumentSelection(getter_AddRefs(selection));
if (NS_FAILED(rv)) return rv;
rv = selection->AddSelectionListener(mSelectionListener);
if (NS_FAILED(rv)) return rv;
return rv;
}
NS_IMETHODIMP
DocumentViewerImpl::Stop(void)
{
if (mDocument) {
mDocument->StopDocumentLoad();
}
if (mPresContext) {
mPresContext->Stop();
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::SetUAStyleSheet(nsIStyleSheet* aUAStyleSheet)
{
mUAStyleSheet = dont_QueryInterface(aUAStyleSheet);
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::GetDocument(nsIDocument*& aResult)
{
aResult = mDocument;
NS_IF_ADDREF(aResult);
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::GetPresShell(nsIPresShell*& aResult)
{
aResult = mPresShell;
NS_IF_ADDREF(aResult);
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::GetPresContext(nsIPresContext*& aResult)
{
aResult = mPresContext;
NS_IF_ADDREF(aResult);
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::GetBounds(nsRect& aResult)
{
NS_PRECONDITION(mWindow, "null window");
if (mWindow) {
mWindow->GetBounds(aResult);
}
else {
aResult.SetRect(0, 0, 0, 0);
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::SetBounds(const nsRect& aBounds)
{
NS_PRECONDITION(mWindow, "null window");
if (mWindow) {
// Don't have the widget repaint. Layout will generate repaint requests
// during reflow
mWindow->Resize(aBounds.x, aBounds.y, aBounds.width, aBounds.height,
PR_FALSE);
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::Move(PRInt32 aX, PRInt32 aY)
{
NS_PRECONDITION(mWindow, "null window");
if (mWindow) {
mWindow->Move(aX, aY);
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::Show(void)
{
NS_PRECONDITION(mWindow, "null window");
if (mWindow) {
mWindow->Show(PR_TRUE);
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::Hide(void)
{
NS_PRECONDITION(mWindow, "null window");
if (mWindow) {
mWindow->Show(PR_FALSE);
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::PrintContent(nsIWebShell *aParent,nsIDeviceContext *aDContext)
{
NS_ENSURE_ARG_POINTER(aParent);
NS_ENSURE_ARG_POINTER(aDContext);
nsCOMPtr<nsIStyleSet> ss;
nsCOMPtr<nsIViewManager> vm;
PRInt32 width, height;
nsIView *view;
nsresult rv;
PRInt32 count,i;
nsCOMPtr<nsIContentViewer> viewer;
nsCOMPtr<nsIDocShellTreeNode> parentAsNode(do_QueryInterface(aParent));
parentAsNode->GetChildCount(&count);
if(count> 0) {
for(i=0;i<count;i++) {
nsCOMPtr<nsIDocShellTreeItem> child;
parentAsNode->GetChildAt(i, getter_AddRefs(child));
nsCOMPtr<nsIDocShell> childAsShell(do_QueryInterface(child));
childAsShell->GetContentViewer(getter_AddRefs(viewer));
nsCOMPtr<nsIContentViewerFile> viewerFile(do_QueryInterface(viewer));
if (viewerFile) {
nsCOMPtr<nsIWebShell> childWebShell(do_QueryInterface(child));
NS_ENSURE_SUCCESS(viewerFile->PrintContent(childWebShell,aDContext), NS_ERROR_FAILURE);
}
}
} else {
aDContext->BeginDocument();
aDContext->GetDeviceSurfaceDimensions(width, height);
nsCOMPtr<nsIPresContext> cx;
rv = NS_NewPrintContext(getter_AddRefs(cx));
if (NS_FAILED(rv)) {
return rv;
}
cx->Init(aDContext);
nsCompatibility mode;
mPresContext->GetCompatibilityMode(&mode);
cx->SetCompatibilityMode(mode);
cx->SetContainer(aParent);
CreateStyleSet(mDocument, getter_AddRefs(ss));
nsCOMPtr<nsIPresShell> ps;
rv = NS_NewPresShell(getter_AddRefs(ps));
if (NS_FAILED(rv)) {
return rv;
}
rv = nsComponentManager::CreateInstance(kViewManagerCID,
nsnull,
NS_GET_IID(nsIViewManager),
(void **)getter_AddRefs(vm));
if (NS_FAILED(rv)) {
return rv;
}
rv = vm->Init(aDContext);
if (NS_FAILED(rv)) {
return rv;
}
nsRect tbounds = nsRect(0, 0, width, height);
// Create a child window of the parent that is our "root view/window"
rv = nsComponentManager::CreateInstance(kViewCID, nsnull, NS_GET_IID(nsIView), (void **)&view);
if (NS_FAILED(rv)) {
return rv;
}
rv = view->Init(vm, tbounds, nsnull);
if (NS_FAILED(rv)) {
return rv;
}
// Setup hierarchical relationship in view manager
vm->SetRootView(view);
ps->Init(mDocument, cx, vm, ss);
//lay it out...
ps->InitialReflow(width, height);
// Ask the page sequence frame to print all the pages
nsIPageSequenceFrame* pageSequence;
nsPrintOptions options;
ps->GetPageSequenceFrame(&pageSequence);
NS_ASSERTION(nsnull != pageSequence, "no page sequence frame");
if (nsnull != mFilePointer) {
// output the regression test
nsIFrameDebug* fdbg;
nsIFrame* root;
ps->GetRootFrame(&root);
if (NS_SUCCEEDED(root->QueryInterface(NS_GET_IID(nsIFrameDebug), (void**) &fdbg))) {
fdbg->DumpRegressionData(cx, mFilePointer, 0);
}
fclose(mFilePointer);
} else {
pageSequence->Print(cx, options, nsnull);
}
aDContext->EndDocument();
ps->EndObservingDocument();
}
return NS_OK;
}
void DocumentViewerImpl::Notify(nsIImageGroup *aImageGroup,
nsImageGroupNotification aNotificationType)
{
//
// Image are being loaded... Set the flag to delay printing until
// all images are loaded.
//
if (aNotificationType == nsImageGroupNotification_kStartedLoading) {
mIsPrinting = PR_TRUE;
}
//
// All the images have been loaded, so the document is ready to print.
//
// However, at this point we are unable to release the resources that
// were allocated for printing... This is because ImgLib resources will
// be deleted and *this* is an ImgLib notification routine. So, fire an
// event to do the actual printing.
//
else if(aNotificationType == nsImageGroupNotification_kFinishedLoading) {
nsresult rv;
nsCOMPtr<nsIEventQueue> eventQ;
// Get the event queue of the current thread...
NS_WITH_SERVICE(nsIEventQueueService, eventQService, kEventQueueService, &rv);
if (NS_FAILED(rv)) return;
rv = eventQService->GetThreadEventQueue(NS_CURRENT_THREAD,
getter_AddRefs(eventQ));
if (NS_FAILED(rv)) return;
PRStatus status;
PLEvent *event = new PLEvent;
if (!event) return;
//
// AddRef this because it is being placed in the PLEvent struct.
// It will be Released when DestroyPLEvent is called...
//
NS_ADDREF_THIS();
PL_InitEvent(event,
this,
(PLHandleEventProc) DocumentViewerImpl::HandlePLEvent,
(PLDestroyEventProc) DocumentViewerImpl::DestroyPLEvent);
status = eventQ->PostEvent(event);
}
}
NS_IMETHODIMP
DocumentViewerImpl::SetEnableRendering(PRBool aOn)
{
mEnableRendering = aOn;
if (mViewManager) {
if (aOn) {
mViewManager->EnableRefresh(NS_VMREFRESH_IMMEDIATE);
nsIView* view;
mViewManager->GetRootView(view); // views are not refCounted
if (view) {
mViewManager->UpdateView(view, NS_VMREFRESH_IMMEDIATE);
}
}
else {
mViewManager->DisableRefresh();
}
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::GetEnableRendering(PRBool* aResult)
{
NS_PRECONDITION(nsnull != aResult, "null OUT ptr");
if (aResult) {
*aResult = mEnableRendering;
}
return NS_OK;
}
void
DocumentViewerImpl::ForceRefresh()
{
mWindow->Invalidate(PR_TRUE);
}
nsresult
DocumentViewerImpl::CreateStyleSet(nsIDocument* aDocument,
nsIStyleSet** aStyleSet)
{
// this should eventually get expanded to allow for creating
// different sets for different media
nsresult rv;
if (!mUAStyleSheet) {
NS_WARNING("unable to load UA style sheet");
}
rv = NS_NewStyleSet(aStyleSet);
if (NS_OK == rv) {
PRInt32 index = aDocument->GetNumberOfStyleSheets();
while (0 < index--) {
nsCOMPtr<nsIStyleSheet> sheet(getter_AddRefs(aDocument->GetStyleSheetAt(index)));
/*
* GetStyleSheetAt will return all style sheets in the document but
* we're only interested in the ones that are enabled.
*/
PRBool styleEnabled;
sheet->GetEnabled(styleEnabled);
if (styleEnabled) {
(*aStyleSet)->AddDocStyleSheet(sheet, aDocument);
}
}
if (mUAStyleSheet) {
(*aStyleSet)->AppendBackstopStyleSheet(mUAStyleSheet);
}
}
return rv;
}
nsresult
DocumentViewerImpl::MakeWindow(nsIWidget* aParentWidget,
const nsRect& aBounds)
{
nsresult rv;
rv = nsComponentManager::CreateInstance(kViewManagerCID,
nsnull,
NS_GET_IID(nsIViewManager),
getter_AddRefs(mViewManager));
nsCOMPtr<nsIDeviceContext> dx;
mPresContext->GetDeviceContext(getter_AddRefs(dx));
nsRect tbounds = aBounds;
float p2t;
mPresContext->GetPixelsToTwips(&p2t);
tbounds *= p2t;
// Initialize the view manager with an offset. This allows the viewmanager
// to manage a coordinate space offset from (0,0)
if ((NS_OK != rv) || (NS_OK != mViewManager->Init(dx, tbounds.x, tbounds.y))) {
return rv;
}
// Reset the bounds offset so the root view is set to 0,0. The offset is
// specified in nsIViewManager::Init above.
// Besides, layout will reset the root view to (0,0) during reflow,
// so changing it to 0,0 eliminates placing
// the root view in the wrong place initially.
tbounds.x = 0;
tbounds.y = 0;
// Create a child window of the parent that is our "root view/window"
// Create a view
rv = nsComponentManager::CreateInstance(kViewCID,
nsnull,
NS_GET_IID(nsIView),
(void**)&mView);
if ((NS_OK != rv) || (NS_OK != mView->Init(mViewManager,
tbounds,
nsnull))) {
return rv;
}
rv = mView->CreateWidget(kWidgetCID, nsnull, aParentWidget->GetNativeData(NS_NATIVE_WIDGET));
if (rv != NS_OK)
return rv;
// Setup hierarchical relationship in view manager
mViewManager->SetRootView(mView);
mView->GetWidget(*getter_AddRefs(mWindow));
//set frame rate to 25 fps
mViewManager->SetFrameRate(25);
// This SetFocus is necessary so the Arrow Key and Page Key events
// go to the scrolled view as soon as the Window is created instead of going to
// the browser window (this enables keyboard scrolling of the document)
// mWindow->SetFocus();
return rv;
}
nsresult DocumentViewerImpl::GetDocumentSelection(nsIDOMSelection **aSelection)
{
if (!aSelection) return NS_ERROR_NULL_POINTER;
if (!mPresShell) return NS_ERROR_NOT_INITIALIZED;
return mPresShell->GetSelection(SELECTION_NORMAL, aSelection);
}
NS_IMETHODIMP
DocumentViewerImpl::CreateDocumentViewerUsing(nsIPresContext* aPresContext,
nsIDocumentViewer*& aResult)
{
if (!mDocument) {
// XXX better error
return NS_ERROR_NULL_POINTER;
}
if (nsnull == aPresContext) {
return NS_ERROR_NULL_POINTER;
}
// Create new viewer
DocumentViewerImpl* viewer = new DocumentViewerImpl(aPresContext);
if (nsnull == viewer) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(viewer);
// XXX make sure the ua style sheet is used (for now; need to be
// able to specify an alternate)
viewer->SetUAStyleSheet(mUAStyleSheet);
// Bind the new viewer to the old document
nsresult rv = viewer->BindToDocument(mDocument, "create");/* XXX verb? */
aResult = viewer;
return rv;
}
void PR_CALLBACK DocumentViewerImpl::HandlePLEvent(PLEvent* aEvent)
{
DocumentViewerImpl *viewer;
viewer = (DocumentViewerImpl*)PL_GetEventOwner(aEvent);
NS_ASSERTION(viewer, "The event owner is null.");
if (viewer) {
viewer->DocumentReadyForPrinting();
}
}
void PR_CALLBACK DocumentViewerImpl::DestroyPLEvent(PLEvent* aEvent)
{
DocumentViewerImpl *viewer;
viewer = (DocumentViewerImpl*)PL_GetEventOwner(aEvent);
NS_IF_RELEASE(viewer);
delete aEvent;
}
void DocumentViewerImpl::DocumentReadyForPrinting()
{
nsCOMPtr<nsIWebShell> webContainer;
webContainer = do_QueryInterface(mContainer);
if(webContainer) {
//
// Remove ourselves as an image group observer...
//
nsCOMPtr<nsIImageGroup> imageGroup;
mPrintPC->GetImageGroup(getter_AddRefs(imageGroup));
if (imageGroup) {
imageGroup->RemoveObserver(this);
}
//
// Send the document to the printer...
//
nsresult rv = PrintContent(webContainer, mPrintDC);
NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "bad result from PrintConent");
// printing is complete, clean up now
mIsPrinting = PR_FALSE;
mPrintPS->EndObservingDocument();
if (mPrintListener)
mPrintListener->OnEndPrinting(NS_OK);
NS_RELEASE(mPrintPS);
NS_RELEASE(mPrintVM);
NS_RELEASE(mPrintSS);
NS_RELEASE(mPrintDC);
}
}
#ifdef XP_MAC
#pragma mark -
#endif
/* ========================================================================================
* nsIContentViewerEdit
* ======================================================================================== */
NS_IMETHODIMP DocumentViewerImpl::Search()
{
NS_ASSERTION(0, "NOT IMPLEMENTED");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP DocumentViewerImpl::GetSearchable(PRBool *aSearchable)
{
NS_ASSERTION(0, "NOT IMPLEMENTED");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP DocumentViewerImpl::ClearSelection()
{
NS_ASSERTION(0, "NOT IMPLEMENTED");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP DocumentViewerImpl::SelectAll()
{
// XXX this is a temporary implementation copied from nsWebShell
// for now. I think nsDocument and friends should have some helper
// functions to make this easier.
nsCOMPtr<nsIDOMSelection> selection;
nsresult rv;
rv = GetDocumentSelection(getter_AddRefs(selection));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIDOMHTMLDocument> htmldoc = do_QueryInterface(mDocument);
nsCOMPtr<nsIDOMNode> bodyNode;
if (htmldoc)
{
nsCOMPtr<nsIDOMHTMLElement>bodyElement;
rv = htmldoc->GetBody(getter_AddRefs(bodyElement));
if (NS_FAILED(rv) || !bodyElement) return rv;
bodyNode = do_QueryInterface(bodyElement);
}
else if (mDocument)
{
nsCOMPtr<nsIContent> rootContent = getter_AddRefs(mDocument->GetRootContent());
bodyNode = do_QueryInterface(rootContent);
}
if (!bodyNode) return NS_ERROR_FAILURE;
rv = selection->ClearSelection();
if (NS_FAILED(rv)) return rv;
static NS_DEFINE_CID(kCDOMRangeCID, NS_RANGE_CID);
nsCOMPtr<nsIDOMRange> range;
rv = nsComponentManager::CreateInstance(kCDOMRangeCID, nsnull,
NS_GET_IID(nsIDOMRange),
getter_AddRefs(range));
rv = range->SelectNodeContents(bodyNode);
if (NS_FAILED(rv)) return rv;
rv = selection->AddRange(range);
return rv;
}
NS_IMETHODIMP DocumentViewerImpl::CopySelection()
{
if (!mPresShell) return NS_ERROR_NOT_INITIALIZED;
return mPresShell->DoCopy();
}
NS_IMETHODIMP DocumentViewerImpl::GetCopyable(PRBool *aCopyable)
{
nsCOMPtr<nsIDOMSelection> selection;
nsresult rv;
rv = GetDocumentSelection(getter_AddRefs(selection));
if (NS_FAILED(rv)) return rv;
PRBool isCollapsed;
selection->GetIsCollapsed(&isCollapsed);
*aCopyable = !isCollapsed;
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::CutSelection()
{
NS_ASSERTION(0, "NOT IMPLEMENTED");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP DocumentViewerImpl::GetCutable(PRBool *aCutable)
{
*aCutable = PR_FALSE; // mm, will this ever be called for an editable document?
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::Paste()
{
NS_ASSERTION(0, "NOT IMPLEMENTED");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP DocumentViewerImpl::GetPasteable(PRBool *aPasteable)
{
*aPasteable = PR_FALSE;
return NS_OK;
}
#ifdef XP_MAC
#pragma mark -
#endif
/* ========================================================================================
* nsIContentViewerFile
* ======================================================================================== */
NS_IMETHODIMP
DocumentViewerImpl::Save()
{
NS_ASSERTION(0, "NOT IMPLEMENTED");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
DocumentViewerImpl::GetSaveable(PRBool *aSaveable)
{
NS_ASSERTION(0, "NOT IMPLEMENTED");
return NS_ERROR_NOT_IMPLEMENTED;
}
static NS_DEFINE_IID(kIDeviceContextSpecFactoryIID, NS_IDEVICE_CONTEXT_SPEC_FACTORY_IID);
static NS_DEFINE_IID(kDeviceContextSpecFactoryCID, NS_DEVICE_CONTEXT_SPEC_FACTORY_CID);
/** ---------------------------------------------------
* See documentation above in the nsIContentViewerfile class definition
* @update 01/24/00 dwc
*/
NS_IMETHODIMP
DocumentViewerImpl::Print(PRBool aSilent,FILE *aFile, nsIPrintListener *aPrintListener)
{
nsCOMPtr<nsIWebShell> webContainer;
nsCOMPtr<nsIDeviceContextSpecFactory> factory;
PRInt32 width,height;
nsComponentManager::CreateInstance(kDeviceContextSpecFactoryCID,
nsnull,
kIDeviceContextSpecFactoryIID,
(void **)getter_AddRefs(factory));
if (factory) {
#ifdef DEBUG_dcone
printf("PRINT JOB STARTING\n");
#endif
nsIDeviceContextSpec *devspec = nsnull;
nsCOMPtr<nsIDeviceContext> dx;
mPrintDC = nsnull;
mFilePointer = aFile;
factory->CreateDeviceContextSpec(nsnull, devspec, aSilent);
if (nsnull != devspec) {
mPresContext->GetDeviceContext(getter_AddRefs(dx));
nsresult rv = dx->GetDeviceContextFor(devspec, mPrintDC);
if (NS_SUCCEEDED(rv)) {
NS_RELEASE(devspec);
// Get the webshell for this documentviewer
webContainer = do_QueryInterface(mContainer);
if(webContainer) {
// load the document and do the initial reflow on the entire document
rv = NS_NewPrintContext(&mPrintPC);
if(NS_FAILED(rv)){
return rv;
}
mPrintDC->GetDeviceSurfaceDimensions(width,height);
mPrintPC->Init(mPrintDC);
mPrintPC->SetContainer(webContainer);
CreateStyleSet(mDocument,&mPrintSS);
rv = NS_NewPresShell(&mPrintPS);
if(NS_FAILED(rv)){
return rv;
}
rv = nsComponentManager::CreateInstance(kViewManagerCID, nsnull, NS_GET_IID(nsIViewManager),(void**)&mPrintVM);
if(NS_FAILED(rv)) {
return rv;
}
rv = mPrintVM->Init(mPrintDC);
if(NS_FAILED(rv)) {
return rv;
}
rv = nsComponentManager::CreateInstance(kViewCID, nsnull, NS_GET_IID(nsIView),(void**)&mPrintView);
if(NS_FAILED(rv)) {
return rv;
}
nsRect tbounds = nsRect(0,0,width,height);
rv = mPrintView->Init(mPrintVM,tbounds,nsnull);
if(NS_FAILED(rv)) {
return rv;
}
// setup hierarchical relationship in view manager
mPrintVM->SetRootView(mPrintView);
mPrintPS->Init(mDocument,mPrintPC,mPrintVM,mPrintSS);
nsCOMPtr<nsIImageGroup> imageGroup;
mPrintPC->GetImageGroup(getter_AddRefs(imageGroup));
if (imageGroup) {
imageGroup->AddObserver(this);
}
mPrintPS->InitialReflow(width,height);
#ifdef DEBUG_dcone
float a1,a2;
PRInt32 i1,i2;
printf("CRITICAL PRINTING INFORMATION\n");
printf("PRESSHELL(%x) PRESCONTEXT(%x)\nVIEWMANAGER(%x) VIEW(%x)\n",
mPrintPS, mPrintPC,mPrintDC,mPrintVM,mPrintView);
// DEVICE CONTEXT INFORMATION from PresContext
printf("DeviceContext of Presentation Context(%x)\n",dx);
dx->GetDevUnitsToTwips(a1);
dx->GetTwipsToDevUnits(a2);
printf(" DevToTwips = %f TwipToDev = %f\n",a1,a2);
dx->GetAppUnitsToDevUnits(a1);
dx->GetDevUnitsToAppUnits(a2);
printf(" AppUnitsToDev = %f DevUnitsToApp = %f\n",a1,a2);
dx->GetCanonicalPixelScale(a1);
printf(" GetCanonicalPixelScale = %f\n",a1);
dx->GetScrollBarDimensions(a1, a2);
printf(" ScrollBar x = %f y = %f\n",a1,a2);
dx->GetZoom(a1);
printf(" Zoom = %f\n",a1);
dx->GetDepth((PRUint32&)i1);
printf(" Depth = %d\n",i1);
dx->GetDeviceSurfaceDimensions(i1,i2);
printf(" DeviceDimension w = %d h = %d\n",i1,i2);
// DEVICE CONTEXT INFORMATION
printf("DeviceContext created for print(%x)\n",mPrintDC);
mPrintDC->GetDevUnitsToTwips(a1);
mPrintDC->GetTwipsToDevUnits(a2);
printf(" DevToTwips = %f TwipToDev = %f\n",a1,a2);
mPrintDC->GetAppUnitsToDevUnits(a1);
mPrintDC->GetDevUnitsToAppUnits(a2);
printf(" AppUnitsToDev = %f DevUnitsToApp = %f\n",a1,a2);
mPrintDC->GetCanonicalPixelScale(a1);
printf(" GetCanonicalPixelScale = %f\n",a1);
mPrintDC->GetScrollBarDimensions(a1, a2);
printf(" ScrollBar x = %f y = %f\n",a1,a2);
mPrintDC->GetZoom(a1);
printf(" Zoom = %f\n",a1);
mPrintDC->GetDepth((PRUint32&)i1);
printf(" Depth = %d\n",i1);
mPrintDC->GetDeviceSurfaceDimensions(i1,i2);
printf(" DeviceDimension w = %d h = %d\n",i1,i2);
#endif
// Print listener setup...
if (aPrintListener)
{
mPrintListener = aPrintListener;
mPrintListener->OnStartPrinting();
/* RICHIE mPrintListener->OnProgressPrinting(PRUint32 aProgress, PRUint32 aProgressMax); */
}
//
// The mIsPrinting flag is set when the ImageGroup observer is
// notified that images must be loaded as a result of the
// InitialReflow...
//
if(!mIsPrinting){
DocumentReadyForPrinting();
#ifdef DEBUG_dcone
printf("PRINT JOB ENDING, OBSERVER WAS NOT CALLED\n");
#endif
} else {
// use the observer mechanism to finish the printing
#ifdef DEBUG_dcone
printf("PRINTING OBSERVER STARTED\n");
#endif
}
}
}
}
}
return NS_OK;
}
NS_IMETHODIMP
DocumentViewerImpl::GetPrintable(PRBool *aPrintable)
{
NS_ENSURE_ARG_POINTER(aPrintable);
*aPrintable = PR_TRUE;
return NS_OK;
}
#ifdef XP_MAC
#pragma mark -
#endif
//*****************************************************************************
// nsIMarkupDocumentViewer
//*****************************************************************************
NS_IMETHODIMP DocumentViewerImpl::ScrollToNode(nsIDOMNode* aNode)
{
NS_ENSURE_ARG(aNode);
nsCOMPtr<nsIPresShell> presShell;
NS_ENSURE_SUCCESS(GetPresShell(*(getter_AddRefs(presShell))), NS_ERROR_FAILURE);
// Get the nsIContent interface, because that's what we need to
// get the primary frame
nsCOMPtr<nsIContent> content(do_QueryInterface(aNode));
NS_ENSURE_TRUE(content, NS_ERROR_FAILURE);
// Get the primary frame
nsIFrame* frame; // Remember Frames aren't ref-counted. They are in their
// own special little world.
NS_ENSURE_SUCCESS(presShell->GetPrimaryFrameFor(content, &frame),
NS_ERROR_FAILURE);
// tell the pres shell to scroll to the frame
NS_ENSURE_SUCCESS(presShell->ScrollFrameIntoView(frame,
NS_PRESSHELL_SCROLL_TOP,
NS_PRESSHELL_SCROLL_ANYWHERE),
NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::GetAllowPlugins(PRBool* aAllowPlugins)
{
NS_ENSURE_ARG_POINTER(aAllowPlugins);
*aAllowPlugins = mAllowPlugins;
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::SetAllowPlugins(PRBool aAllowPlugins)
{
mAllowPlugins = aAllowPlugins;
return NS_OK;
}
// XXX: SEMANTIC CHANGE!
// returns a copy of the string. Caller is responsible for freeing result
// using Recycle(aDefaultCharacterSet)
NS_IMETHODIMP DocumentViewerImpl::GetDefaultCharacterSet(PRUnichar** aDefaultCharacterSet)
{
NS_ENSURE_ARG_POINTER(aDefaultCharacterSet);
NS_ENSURE_STATE(mContainer);
static char *gDefCharset = nsnull; // XXX: memory leak!
if (0 == mDefaultCharacterSet.Length())
{
if ((nsnull == gDefCharset) || (nsnull == *gDefCharset))
{
nsCOMPtr<nsIWebShell> webShell;
webShell = do_QueryInterface(mContainer);
if (webShell)
{
nsCOMPtr<nsIPref> prefs(do_GetService(NS_PREF_PROGID));
if(prefs)
prefs->CopyCharPref("intl.charset.default", &gDefCharset);
}
}
if ((nsnull == gDefCharset) || (nsnull == *gDefCharset))
mDefaultCharacterSet = "ISO-8859-1";
else
mDefaultCharacterSet = gDefCharset;
}
*aDefaultCharacterSet = mDefaultCharacterSet.ToNewUnicode();
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::SetDefaultCharacterSet(const PRUnichar* aDefaultCharacterSet)
{
mDefaultCharacterSet = aDefaultCharacterSet; // this does a copy of aDefaultCharacterSet
// now set the default char set on all children of mContainer
nsCOMPtr<nsIDocShellTreeNode> docShellNode(do_QueryInterface(mContainer));
if (docShellNode)
{
PRInt32 i;
PRInt32 n;
docShellNode->GetChildCount(&n);
for (i=0; i < n; i++)
{
nsCOMPtr<nsIDocShellTreeItem> child;
docShellNode->GetChildAt(i, getter_AddRefs(child));
nsCOMPtr<nsIDocShell> childAsShell(do_QueryInterface(child));
NS_ASSERTION(childAsShell, "null child in docshell");
if (childAsShell)
{
nsCOMPtr<nsIContentViewer> childCV;
childAsShell->GetContentViewer(getter_AddRefs(childCV));
if (childCV)
{
nsCOMPtr<nsIMarkupDocumentViewer> markupCV = do_QueryInterface(childCV);
if (markupCV) {
markupCV->SetDefaultCharacterSet(aDefaultCharacterSet);
}
}
}
}
}
return NS_OK;
}
// XXX: SEMANTIC CHANGE!
// returns a copy of the string. Caller is responsible for freeing result
// using Recycle(aForceCharacterSet)
NS_IMETHODIMP DocumentViewerImpl::GetForceCharacterSet(PRUnichar** aForceCharacterSet)
{
NS_ENSURE_ARG_POINTER(aForceCharacterSet);
nsAutoString emptyStr;
if (mForceCharacterSet.Equals(emptyStr)) {
*aForceCharacterSet = nsnull;
}
else {
*aForceCharacterSet = mForceCharacterSet.ToNewUnicode();
}
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::SetForceCharacterSet(const PRUnichar* aForceCharacterSet)
{
mForceCharacterSet = aForceCharacterSet;
// now set the force char set on all children of mContainer
nsCOMPtr<nsIDocShellTreeNode> docShellNode(do_QueryInterface(mContainer));
if (docShellNode)
{
PRInt32 i;
PRInt32 n;
docShellNode->GetChildCount(&n);
for (i=0; i < n; i++)
{
nsCOMPtr<nsIDocShellTreeItem> child;
docShellNode->GetChildAt(i, getter_AddRefs(child));
nsCOMPtr<nsIDocShell> childAsShell(do_QueryInterface(child));
NS_ASSERTION(childAsShell, "null child in docshell");
if (childAsShell)
{
nsCOMPtr<nsIContentViewer> childCV;
childAsShell->GetContentViewer(getter_AddRefs(childCV));
if (childCV)
{
nsCOMPtr<nsIMarkupDocumentViewer> markupCV = do_QueryInterface(childCV);
if (markupCV) {
markupCV->SetForceCharacterSet(aForceCharacterSet);
}
}
}
}
}
return NS_OK;
}
// XXX: SEMANTIC CHANGE!
// returns a copy of the string. Caller is responsible for freeing result
// using Recycle(aHintCharacterSet)
NS_IMETHODIMP DocumentViewerImpl::GetHintCharacterSet(PRUnichar * *aHintCharacterSet)
{
NS_ENSURE_ARG_POINTER(aHintCharacterSet);
if(kCharsetUninitialized == mHintCharsetSource) {
*aHintCharacterSet = nsnull;
} else {
*aHintCharacterSet = mHintCharset.ToNewUnicode();
// this can't possibly be right. we can't set a value just because somebody got a related value!
//mHintCharsetSource = kCharsetUninitialized;
}
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::GetHintCharacterSetSource(PRInt32 *aHintCharacterSetSource)
{
NS_ENSURE_ARG_POINTER(aHintCharacterSetSource);
*aHintCharacterSetSource = mHintCharsetSource;
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::SetHintCharacterSetSource(PRInt32 aHintCharacterSetSource)
{
mHintCharsetSource = (nsCharsetSource)aHintCharacterSetSource;
// now set the force char set on all children of mContainer
nsCOMPtr<nsIDocShellTreeNode> docShellNode(do_QueryInterface(mContainer));
if (docShellNode)
{
PRInt32 i;
PRInt32 n;
docShellNode->GetChildCount(&n);
for (i=0; i < n; i++)
{
nsCOMPtr<nsIDocShellTreeItem> child;
docShellNode->GetChildAt(i, getter_AddRefs(child));
nsCOMPtr<nsIDocShell> childAsShell(do_QueryInterface(child));
NS_ASSERTION(childAsShell, "null child in docshell");
if (childAsShell)
{
nsCOMPtr<nsIContentViewer> childCV;
childAsShell->GetContentViewer(getter_AddRefs(childCV));
if (childCV)
{
nsCOMPtr<nsIMarkupDocumentViewer> markupCV = do_QueryInterface(childCV);
if (markupCV) {
markupCV->SetHintCharacterSetSource(aHintCharacterSetSource);
}
}
}
}
}
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::SetHintCharacterSet(const PRUnichar* aHintCharacterSet)
{
mHintCharset = aHintCharacterSet;
// now set the force char set on all children of mContainer
nsCOMPtr<nsIDocShellTreeNode> docShellNode(do_QueryInterface(mContainer));
if (docShellNode)
{
PRInt32 i;
PRInt32 n;
docShellNode->GetChildCount(&n);
for (i=0; i < n; i++)
{
nsCOMPtr<nsIDocShellTreeItem> child;
docShellNode->GetChildAt(i, getter_AddRefs(child));
nsCOMPtr<nsIDocShell> childAsShell(do_QueryInterface(child));
NS_ASSERTION(childAsShell, "null child in docshell");
if (childAsShell)
{
nsCOMPtr<nsIContentViewer> childCV;
childAsShell->GetContentViewer(getter_AddRefs(childCV));
if (childCV)
{
nsCOMPtr<nsIMarkupDocumentViewer> markupCV = do_QueryInterface(childCV);
if (markupCV) {
markupCV->SetHintCharacterSet(aHintCharacterSet);
}
}
}
}
}
return NS_OK;
}
NS_IMETHODIMP DocumentViewerImpl::SizeToContent()
{
nsCOMPtr<nsIDocShellTreeItem> docShellAsItem(do_QueryInterface(mContainer));
NS_ENSURE_TRUE(docShellAsItem, NS_ERROR_FAILURE);
nsCOMPtr<nsIDocShellTreeItem> docShellParent;
docShellAsItem->GetSameTypeParent(getter_AddRefs(docShellParent));
// It's only valid to access this from a top frame. Doesn't work from
// sub-frames.
NS_ENSURE_TRUE(!docShellParent, NS_ERROR_FAILURE);
nsCOMPtr<nsIPresShell> presShell;
GetPresShell(*getter_AddRefs(presShell));
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(presShell->ResizeReflow(NS_UNCONSTRAINEDSIZE,
NS_UNCONSTRAINEDSIZE), NS_ERROR_FAILURE);
nsCOMPtr<nsIPresContext> presContext;
GetPresContext(*getter_AddRefs(presContext));
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
nsRect shellArea;
PRInt32 width, height;
float pixelScale;
// so how big is it?
presContext->GetVisibleArea(shellArea);
presContext->GetTwipsToPixels(&pixelScale);
width = PRInt32((float)shellArea.width*pixelScale);
height = PRInt32((float)shellArea.height*pixelScale);
nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
docShellAsItem->GetTreeOwner(getter_AddRefs(treeOwner));
NS_ENSURE_TRUE(treeOwner, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(treeOwner->SizeShellTo(docShellAsItem, width, height),
NS_ERROR_FAILURE);
return NS_OK;
}
#ifdef XP_MAC
#pragma mark -
#endif
NS_IMPL_ISUPPORTS(nsDocViwerSelectionListener, NS_GET_IID(nsIDOMSelectionListener));
nsresult nsDocViwerSelectionListener::Init(DocumentViewerImpl *aDocViewer)
{
mDocViewer = aDocViewer;
return NS_OK;
}
NS_IMETHODIMP nsDocViwerSelectionListener::NotifySelectionChanged()
{
NS_ASSERTION(mDocViewer, "Should have doc viewer!");
// get the selection state
nsCOMPtr<nsIDOMSelection> selection;
nsresult rv = mDocViewer->GetDocumentSelection(getter_AddRefs(selection));
if (NS_FAILED(rv)) return rv;
PRBool selectionCollapsed;
selection->GetIsCollapsed(&selectionCollapsed);
// we only call UpdateCommands when the selection changes from collapsed
// to non-collapsed or vice versa. We might need another update string
// for simple selection changes, but that would be expenseive.
if (!mGotSelectionState || mSelectionWasCollapsed != selectionCollapsed)
{
nsCOMPtr<nsIDocument> theDoc;
mDocViewer->GetDocument(*getter_AddRefs(theDoc));
if (!theDoc) return NS_ERROR_FAILURE;
nsCOMPtr<nsIScriptGlobalObject> scriptGlobalObject;
theDoc->GetScriptGlobalObject(getter_AddRefs(scriptGlobalObject));
nsCOMPtr<nsIDOMWindow> domWindow = do_QueryInterface(scriptGlobalObject);
if (!domWindow) return NS_ERROR_FAILURE;
domWindow->UpdateCommands(nsAutoString("select"));
mGotSelectionState = PR_TRUE;
mSelectionWasCollapsed = selectionCollapsed;
}
return NS_OK;
}
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