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RetroZilla/embedding/components/find/src/nsWebBrowserFind.cpp
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla 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/MPL/
*
* 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 the Mozilla browser.
*
* The Initial Developer of the Original Code is
* Netscape Communications, Inc.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Conrad Carlen <ccarlen@netscape.com>
* Simon Fraser <sfraser@netscape.com>
* Akkana Peck <akkana@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsWebBrowserFind.h"
// Only need this for NS_FIND_CONTRACTID,
// else we could use nsIDOMRange.h and nsIFind.h.
#include "nsFind.h"
#include "nsIComponentManager.h"
#include "nsIScriptGlobalObject.h"
#include "nsIScriptSecurityManager.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIDOMWindow.h"
#include "nsIDOMWindowInternal.h"
#include "nsPIDOMWindow.h"
#include "nsIURI.h"
#include "nsIDocShell.h"
#include "nsIEnumerator.h"
#include "nsIDocShellTreeItem.h"
#include "nsIPresShell.h"
#include "nsPresContext.h"
#include "nsIEventStateManager.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.h"
#include "nsIFocusController.h"
#include "nsISelectionController.h"
#include "nsISelection.h"
#include "nsIFrame.h"
#include "nsITextControlFrame.h"
#include "nsReadableUtils.h"
#include "nsIDOMHTMLElement.h"
#include "nsIDOMHTMLDocument.h"
#include "nsIContent.h"
#include "nsContentCID.h"
#include "nsIServiceManager.h"
#include "nsIObserverService.h"
#include "nsISupportsPrimitives.h"
#include "nsITimelineService.h"
#if DEBUG
#include "nsIWebNavigation.h"
#include "nsXPIDLString.h"
#endif
#ifdef XP_MACOSX
#include "nsAutoPtr.h"
#include <Scrap.h>
#endif
static NS_DEFINE_IID(kRangeCID, NS_RANGE_CID);
//*****************************************************************************
// nsWebBrowserFind
//*****************************************************************************
nsWebBrowserFind::nsWebBrowserFind() :
mFindBackwards(PR_FALSE),
mWrapFind(PR_FALSE),
mEntireWord(PR_FALSE),
mMatchCase(PR_FALSE),
mSearchSubFrames(PR_TRUE),
mSearchParentFrames(PR_TRUE)
{
}
nsWebBrowserFind::~nsWebBrowserFind()
{
}
NS_IMPL_ISUPPORTS2(nsWebBrowserFind, nsIWebBrowserFind, nsIWebBrowserFindInFrames)
/* boolean findNext (); */
NS_IMETHODIMP nsWebBrowserFind::FindNext(PRBool *outDidFind)
{
NS_ENSURE_ARG_POINTER(outDidFind);
*outDidFind = PR_FALSE;
NS_ENSURE_TRUE(CanFindNext(), NS_ERROR_NOT_INITIALIZED);
nsresult rv = NS_OK;
nsCOMPtr<nsIDOMWindow> searchFrame = do_QueryReferent(mCurrentSearchFrame);
NS_ENSURE_TRUE(searchFrame, NS_ERROR_NOT_INITIALIZED);
nsCOMPtr<nsIDOMWindow> rootFrame = do_QueryReferent(mRootSearchFrame);
NS_ENSURE_TRUE(rootFrame, NS_ERROR_NOT_INITIALIZED);
// first, if there's a "cmd_findagain" observer around, check to see if it
// wants to perform the find again command . If it performs the find again
// it will return true, in which case we exit ::FindNext() early.
// Otherwise, nsWebBrowserFind needs to perform the find again command itself
// this is used by nsTypeAheadFind, which controls find again when it was
// the last executed find in the current window.
nsCOMPtr<nsIObserverService> observerSvc =
do_GetService("@mozilla.org/observer-service;1");
if (observerSvc) {
nsCOMPtr<nsISupportsInterfacePointer> windowSupportsData =
do_CreateInstance(NS_SUPPORTS_INTERFACE_POINTER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsISupports> searchWindowSupports =
do_QueryInterface(rootFrame);
windowSupportsData->SetData(searchWindowSupports);
NS_NAMED_LITERAL_STRING(dnStr, "down");
NS_NAMED_LITERAL_STRING(upStr, "up");
observerSvc->NotifyObservers(windowSupportsData,
"nsWebBrowserFind_FindAgain",
mFindBackwards? upStr.get(): dnStr.get());
windowSupportsData->GetData(getter_AddRefs(searchWindowSupports));
// findnext performed if search window data cleared out
*outDidFind = searchWindowSupports == nsnull;
if (*outDidFind)
return NS_OK;
}
// next, look in the current frame. If found, return.
rv = SearchInFrame(searchFrame, PR_FALSE, outDidFind);
if (NS_FAILED(rv)) return rv;
if (*outDidFind)
return OnFind(searchFrame); // we are done
// if we are not searching other frames, return
if (!mSearchSubFrames && !mSearchParentFrames)
return NS_OK;
nsIDocShell *rootDocShell = GetDocShellFromWindow(rootFrame);
if (!rootDocShell) return NS_ERROR_FAILURE;
PRInt32 enumDirection;
if (mFindBackwards)
enumDirection = nsIDocShell::ENUMERATE_BACKWARDS;
else
enumDirection = nsIDocShell::ENUMERATE_FORWARDS;
nsCOMPtr<nsISimpleEnumerator> docShellEnumerator;
rv = rootDocShell->GetDocShellEnumerator(nsIDocShellTreeItem::typeContent,
enumDirection, getter_AddRefs(docShellEnumerator));
if (NS_FAILED(rv)) return rv;
// remember where we started
nsCOMPtr<nsIDocShellTreeItem> startingItem =
do_QueryInterface(GetDocShellFromWindow(searchFrame), &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIDocShellTreeItem> curItem;
// XXX We should avoid searching in frameset documents here.
// We also need to honour mSearchSubFrames and mSearchParentFrames.
PRBool hasMore, doFind = PR_FALSE;
while (NS_SUCCEEDED(docShellEnumerator->HasMoreElements(&hasMore)) && hasMore)
{
nsCOMPtr<nsISupports> curSupports;
rv = docShellEnumerator->GetNext(getter_AddRefs(curSupports));
if (NS_FAILED(rv)) break;
curItem = do_QueryInterface(curSupports, &rv);
if (NS_FAILED(rv)) break;
if (doFind)
{
searchFrame = do_GetInterface(curItem, &rv);
if (NS_FAILED(rv)) break;
OnStartSearchFrame(searchFrame);
rv = SearchInFrame(searchFrame, PR_FALSE, outDidFind);
if (NS_FAILED(rv)) return rv;
if (*outDidFind)
return OnFind(searchFrame); // we are done
OnEndSearchFrame(searchFrame);
}
if (curItem.get() == startingItem.get())
doFind = PR_TRUE; // start looking in frames after this one
};
if (!mWrapFind)
{
// remember where we left off
SetCurrentSearchFrame(searchFrame);
return NS_OK;
}
// From here on, we're wrapping, first through the other frames,
// then finally from the beginning of the starting frame back to
// the starting point.
// because nsISimpleEnumerator is totally lame and isn't resettable, I
// have to make a new one
docShellEnumerator = nsnull;
rv = rootDocShell->GetDocShellEnumerator(nsIDocShellTreeItem::typeContent,
enumDirection, getter_AddRefs(docShellEnumerator));
if (NS_FAILED(rv)) return rv;
while (NS_SUCCEEDED(docShellEnumerator->HasMoreElements(&hasMore)) && hasMore)
{
nsCOMPtr<nsISupports> curSupports;
rv = docShellEnumerator->GetNext(getter_AddRefs(curSupports));
if (NS_FAILED(rv)) break;
curItem = do_QueryInterface(curSupports, &rv);
if (NS_FAILED(rv)) break;
if (curItem.get() == startingItem.get())
{
rv = SearchInFrame(searchFrame, PR_TRUE, outDidFind);
if (NS_FAILED(rv)) return rv;
if (*outDidFind)
return OnFind(searchFrame); // we are done
break;
}
searchFrame = do_GetInterface(curItem, &rv);
if (NS_FAILED(rv)) break;
OnStartSearchFrame(searchFrame);
rv = SearchInFrame(searchFrame, PR_FALSE, outDidFind);
if (NS_FAILED(rv)) return rv;
if (*outDidFind)
return OnFind(searchFrame); // we are done
OnEndSearchFrame(searchFrame);
}
// remember where we left off
SetCurrentSearchFrame(searchFrame);
NS_ASSERTION(NS_SUCCEEDED(rv), "Something failed");
return rv;
}
/* attribute wstring searchString; */
NS_IMETHODIMP nsWebBrowserFind::GetSearchString(PRUnichar * *aSearchString)
{
NS_ENSURE_ARG_POINTER(aSearchString);
#ifdef XP_MACOSX
OSStatus err;
ScrapRef scrap;
err = ::GetScrapByName(kScrapFindScrap, kScrapGetNamedScrap, &scrap);
if (err == noErr) {
Size byteCount;
err = ::GetScrapFlavorSize(scrap, kScrapFlavorTypeUnicode, &byteCount);
if (err == noErr) {
NS_ASSERTION(byteCount%2 == 0, "byteCount not a multiple of 2");
nsAutoArrayPtr<PRUnichar> buffer(new PRUnichar[byteCount/2 + 1]);
NS_ENSURE_TRUE(buffer, NS_ERROR_OUT_OF_MEMORY);
err = ::GetScrapFlavorData(scrap, kScrapFlavorTypeUnicode, &byteCount, buffer.get());
if (err == noErr) {
buffer[byteCount/2] = PRUnichar('\0');
mSearchString.Assign(buffer);
}
}
}
#endif
*aSearchString = ToNewUnicode(mSearchString);
return NS_OK;
}
NS_IMETHODIMP nsWebBrowserFind::SetSearchString(const PRUnichar * aSearchString)
{
mSearchString.Assign(aSearchString);
#ifdef XP_MACOSX
OSStatus err;
ScrapRef scrap;
err = ::GetScrapByName(kScrapFindScrap, kScrapClearNamedScrap, &scrap);
if (err == noErr) {
::PutScrapFlavor(scrap, kScrapFlavorTypeUnicode, kScrapFlavorMaskNone,
(mSearchString.Length()*2), aSearchString);
}
#endif
return NS_OK;
}
/* attribute boolean findBackwards; */
NS_IMETHODIMP nsWebBrowserFind::GetFindBackwards(PRBool *aFindBackwards)
{
NS_ENSURE_ARG_POINTER(aFindBackwards);
*aFindBackwards = mFindBackwards;
return NS_OK;
}
NS_IMETHODIMP nsWebBrowserFind::SetFindBackwards(PRBool aFindBackwards)
{
mFindBackwards = aFindBackwards;
return NS_OK;
}
/* attribute boolean wrapFind; */
NS_IMETHODIMP nsWebBrowserFind::GetWrapFind(PRBool *aWrapFind)
{
NS_ENSURE_ARG_POINTER(aWrapFind);
*aWrapFind = mWrapFind;
return NS_OK;
}
NS_IMETHODIMP nsWebBrowserFind::SetWrapFind(PRBool aWrapFind)
{
mWrapFind = aWrapFind;
return NS_OK;
}
/* attribute boolean entireWord; */
NS_IMETHODIMP nsWebBrowserFind::GetEntireWord(PRBool *aEntireWord)
{
NS_ENSURE_ARG_POINTER(aEntireWord);
*aEntireWord = mEntireWord;
return NS_OK;
}
NS_IMETHODIMP nsWebBrowserFind::SetEntireWord(PRBool aEntireWord)
{
mEntireWord = aEntireWord;
return NS_OK;
}
/* attribute boolean matchCase; */
NS_IMETHODIMP nsWebBrowserFind::GetMatchCase(PRBool *aMatchCase)
{
NS_ENSURE_ARG_POINTER(aMatchCase);
*aMatchCase = mMatchCase;
return NS_OK;
}
NS_IMETHODIMP nsWebBrowserFind::SetMatchCase(PRBool aMatchCase)
{
mMatchCase = aMatchCase;
return NS_OK;
}
// Same as the tail-end of nsEventStateManager::FocusElementButNotDocument.
// Used here because nsEventStateManager::MoveFocusToCaret() doesn't
// support text input controls.
static void
FocusElementButNotDocument(nsIDocument* aDocument, nsIContent* aContent)
{
nsIFocusController *focusController = nsnull;
nsCOMPtr<nsPIDOMWindow> ourWindow =
do_QueryInterface(aDocument->GetScriptGlobalObject());
if (ourWindow)
focusController = ourWindow->GetRootFocusController();
if (!focusController)
return;
// Get previous focus
nsCOMPtr<nsIDOMElement> oldFocusedElement;
focusController->GetFocusedElement(getter_AddRefs(oldFocusedElement));
nsCOMPtr<nsIContent> oldFocusedContent =
do_QueryInterface(oldFocusedElement);
// Notify focus controller of new focus for this document
nsCOMPtr<nsIDOMElement> newFocusedElement(do_QueryInterface(aContent));
focusController->SetFocusedElement(newFocusedElement);
nsIPresShell* presShell = aDocument->GetShellAt(0);
nsIEventStateManager* esm = presShell->GetPresContext()->EventStateManager();
// Temporarily set esm::mCurrentFocus so that esm::GetContentState() tells
// layout system to show focus on this element.
esm->SetFocusedContent(aContent); // Reset back to null at the end.
aDocument->BeginUpdate(UPDATE_CONTENT_STATE);
aDocument->ContentStatesChanged(oldFocusedContent, aContent,
NS_EVENT_STATE_FOCUS);
aDocument->EndUpdate(UPDATE_CONTENT_STATE);
// Reset esm::mCurrentFocus = nsnull for this doc, so when this document
// does get focus next time via preHandleEvent() NS_GOTFOCUS,
// the old document gets blurred
esm->SetFocusedContent(nsnull);
}
static PRBool
IsNativeAnonymous(nsIContent* aContent)
{
while (aContent) {
nsIContent* bindingParent = aContent->GetBindingParent();
if (bindingParent == aContent) {
return PR_TRUE;
}
aContent = bindingParent;
}
return PR_FALSE;
}
void nsWebBrowserFind::SetSelectionAndScroll(nsIDOMWindow* aWindow,
nsIDOMRange* aRange)
{
nsCOMPtr<nsIDOMDocument> domDoc;
aWindow->GetDocument(getter_AddRefs(domDoc));
if (!domDoc) return;
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
nsIPresShell* presShell = doc->GetShellAt(0);
if (!presShell) return;
// since the match could be an anonymous textnode inside a
// <textarea> or text <input>, we need to get the outer frame
nsIFrame *frame = nsnull;
nsITextControlFrame *tcFrame = nsnull;
nsCOMPtr<nsIDOMNode> node;
aRange->GetStartContainer(getter_AddRefs(node));
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
for ( ; content; content = content->GetParent()) {
if (!IsNativeAnonymous(content)) {
presShell->GetPrimaryFrameFor(content, &frame);
if (!frame)
return;
CallQueryInterface(frame, &tcFrame);
break;
}
}
nsCOMPtr<nsISelection> selection;
nsCOMPtr<nsISelectionController> selCon;
if (!tcFrame) {
selCon = do_QueryInterface(presShell);
}
else {
tcFrame->GetSelectionContr(getter_AddRefs(selCon));
}
selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
selCon->GetSelection(nsISelectionController::SELECTION_NORMAL,
getter_AddRefs(selection));
if (selection) {
selection->RemoveAllRanges();
selection->AddRange(aRange);
if (tcFrame) {
FocusElementButNotDocument(doc, content);
}
else {
nsCOMPtr<nsPresContext> presContext = presShell->GetPresContext();
PRBool isSelectionWithFocus;
presContext->EventStateManager()->
MoveFocusToCaret(PR_TRUE, &isSelectionWithFocus);
}
// Scroll if necessary to make the selection visible:
// Must be the last thing to do - bug 242056
selCon->ScrollSelectionIntoView
(nsISelectionController::SELECTION_NORMAL,
nsISelectionController::SELECTION_FOCUS_REGION, PR_TRUE);
}
}
// Adapted from nsTextServicesDocument::GetDocumentContentRootNode
nsresult nsWebBrowserFind::GetRootNode(nsIDOMDocument* aDomDoc,
nsIDOMNode **aNode)
{
nsresult rv;
NS_ENSURE_ARG_POINTER(aNode);
*aNode = 0;
nsCOMPtr<nsIDOMHTMLDocument> htmlDoc = do_QueryInterface(aDomDoc);
if (htmlDoc)
{
// For HTML documents, the content root node is the body.
nsCOMPtr<nsIDOMHTMLElement> bodyElement;
rv = htmlDoc->GetBody(getter_AddRefs(bodyElement));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_ARG_POINTER(bodyElement);
return bodyElement->QueryInterface(NS_GET_IID(nsIDOMNode),
(void **)aNode);
}
// For non-HTML documents, the content root node will be the doc element.
nsCOMPtr<nsIDOMElement> docElement;
rv = aDomDoc->GetDocumentElement(getter_AddRefs(docElement));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_ARG_POINTER(docElement);
return docElement->QueryInterface(NS_GET_IID(nsIDOMNode), (void **)aNode);
}
nsresult nsWebBrowserFind::SetRangeAroundDocument(nsIDOMRange* aSearchRange,
nsIDOMRange* aStartPt,
nsIDOMRange* aEndPt,
nsIDOMDocument* aDoc)
{
nsCOMPtr<nsIDOMNode> bodyNode;
nsresult rv = GetRootNode(aDoc, getter_AddRefs(bodyNode));
nsCOMPtr<nsIContent> bodyContent (do_QueryInterface(bodyNode));
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_ARG_POINTER(bodyContent);
PRUint32 childCount = bodyContent->GetChildCount();
aSearchRange->SetStart(bodyNode, 0);
aSearchRange->SetEnd(bodyNode, childCount);
if (mFindBackwards)
{
aStartPt->SetStart(bodyNode, childCount);
aStartPt->SetEnd(bodyNode, childCount);
aEndPt->SetStart(bodyNode, 0);
aEndPt->SetEnd(bodyNode, 0);
}
else
{
aStartPt->SetStart(bodyNode, 0);
aStartPt->SetEnd(bodyNode, 0);
aEndPt->SetStart(bodyNode, childCount);
aEndPt->SetEnd(bodyNode, childCount);
}
return NS_OK;
}
// Set the range to go from the end of the current selection to the
// end of the document (forward), or beginning to beginning (reverse).
// or around the whole document if there's no selection.
nsresult
nsWebBrowserFind::GetSearchLimits(nsIDOMRange* aSearchRange,
nsIDOMRange* aStartPt,
nsIDOMRange* aEndPt,
nsIDOMDocument* aDoc,
nsISelection* aSel,
PRBool aWrap)
{
NS_ENSURE_ARG_POINTER(aSel);
// There is a selection.
PRInt32 count = -1;
nsresult rv = aSel->GetRangeCount(&count);
if (count < 1)
return SetRangeAroundDocument(aSearchRange, aStartPt, aEndPt, aDoc);
// Need bodyNode, for the start/end of the document
nsCOMPtr<nsIDOMNode> bodyNode;
rv = GetRootNode(aDoc, getter_AddRefs(bodyNode));
nsCOMPtr<nsIContent> bodyContent (do_QueryInterface(bodyNode));
NS_ENSURE_ARG_POINTER(bodyContent);
PRUint32 childCount = bodyContent->GetChildCount();
// There are four possible range endpoints we might use:
// DocumentStart, SelectionStart, SelectionEnd, DocumentEnd.
nsCOMPtr<nsIDOMRange> range;
nsCOMPtr<nsIDOMNode> node;
PRInt32 offset;
// Forward, not wrapping: SelEnd to DocEnd
if (!mFindBackwards && !aWrap)
{
// This isn't quite right, since the selection's ranges aren't
// necessarily in order; but they usually will be.
aSel->GetRangeAt(count-1, getter_AddRefs(range));
if (!range) return NS_ERROR_UNEXPECTED;
range->GetEndContainer(getter_AddRefs(node));
if (!node) return NS_ERROR_UNEXPECTED;
range->GetEndOffset(&offset);
aSearchRange->SetStart(node, offset);
aSearchRange->SetEnd(bodyNode, childCount);
aStartPt->SetStart(node, offset);
aStartPt->SetEnd(node, offset);
aEndPt->SetStart(bodyNode, childCount);
aEndPt->SetEnd(bodyNode, childCount);
}
// Backward, not wrapping: DocStart to SelStart
else if (mFindBackwards && !aWrap)
{
aSel->GetRangeAt(0, getter_AddRefs(range));
if (!range) return NS_ERROR_UNEXPECTED;
range->GetStartContainer(getter_AddRefs(node));
if (!node) return NS_ERROR_UNEXPECTED;
range->GetStartOffset(&offset);
aSearchRange->SetStart(bodyNode, 0);
aSearchRange->SetEnd(bodyNode, childCount);
aStartPt->SetStart(node, offset);
aStartPt->SetEnd(node, offset);
aEndPt->SetStart(bodyNode, 0);
aEndPt->SetEnd(bodyNode, 0);
}
// Forward, wrapping: DocStart to SelEnd
else if (!mFindBackwards && aWrap)
{
aSel->GetRangeAt(count-1, getter_AddRefs(range));
if (!range) return NS_ERROR_UNEXPECTED;
range->GetEndContainer(getter_AddRefs(node));
if (!node) return NS_ERROR_UNEXPECTED;
range->GetEndOffset(&offset);
aSearchRange->SetStart(bodyNode, 0);
aSearchRange->SetEnd(bodyNode, childCount);
aStartPt->SetStart(bodyNode, 0);
aStartPt->SetEnd(bodyNode, 0);
aEndPt->SetStart(node, offset);
aEndPt->SetEnd(node, offset);
}
// Backward, wrapping: SelStart to DocEnd
else if (mFindBackwards && aWrap)
{
aSel->GetRangeAt(0, getter_AddRefs(range));
if (!range) return NS_ERROR_UNEXPECTED;
range->GetStartContainer(getter_AddRefs(node));
if (!node) return NS_ERROR_UNEXPECTED;
range->GetStartOffset(&offset);
aSearchRange->SetStart(bodyNode, 0);
aSearchRange->SetEnd(bodyNode, childCount);
aStartPt->SetStart(bodyNode, childCount);
aStartPt->SetEnd(bodyNode, childCount);
aEndPt->SetStart(node, offset);
aEndPt->SetEnd(node, offset);
}
return NS_OK;
}
/* attribute boolean searchFrames; */
NS_IMETHODIMP nsWebBrowserFind::GetSearchFrames(PRBool *aSearchFrames)
{
NS_ENSURE_ARG_POINTER(aSearchFrames);
// this only returns true if we are searching both sub and parent
// frames. There is ambiguity if the caller has previously set
// one, but not both of these.
*aSearchFrames = mSearchSubFrames && mSearchParentFrames;
return NS_OK;
}
NS_IMETHODIMP nsWebBrowserFind::SetSearchFrames(PRBool aSearchFrames)
{
mSearchSubFrames = aSearchFrames;
mSearchParentFrames = aSearchFrames;
return NS_OK;
}
/* attribute nsIDOMWindow currentSearchFrame; */
NS_IMETHODIMP nsWebBrowserFind::GetCurrentSearchFrame(nsIDOMWindow * *aCurrentSearchFrame)
{
NS_ENSURE_ARG_POINTER(aCurrentSearchFrame);
nsCOMPtr<nsIDOMWindow> searchFrame = do_QueryReferent(mCurrentSearchFrame);
NS_IF_ADDREF(*aCurrentSearchFrame = searchFrame);
return (*aCurrentSearchFrame) ? NS_OK : NS_ERROR_NOT_INITIALIZED;
}
NS_IMETHODIMP nsWebBrowserFind::SetCurrentSearchFrame(nsIDOMWindow * aCurrentSearchFrame)
{
// is it ever valid to set this to null?
NS_ENSURE_ARG(aCurrentSearchFrame);
mCurrentSearchFrame = do_GetWeakReference(aCurrentSearchFrame);
return NS_OK;
}
/* attribute nsIDOMWindow rootSearchFrame; */
NS_IMETHODIMP nsWebBrowserFind::GetRootSearchFrame(nsIDOMWindow * *aRootSearchFrame)
{
NS_ENSURE_ARG_POINTER(aRootSearchFrame);
nsCOMPtr<nsIDOMWindow> searchFrame = do_QueryReferent(mRootSearchFrame);
NS_IF_ADDREF(*aRootSearchFrame = searchFrame);
return (*aRootSearchFrame) ? NS_OK : NS_ERROR_NOT_INITIALIZED;
}
NS_IMETHODIMP nsWebBrowserFind::SetRootSearchFrame(nsIDOMWindow * aRootSearchFrame)
{
// is it ever valid to set this to null?
NS_ENSURE_ARG(aRootSearchFrame);
mRootSearchFrame = do_GetWeakReference(aRootSearchFrame);
return NS_OK;
}
/* attribute boolean searchSubframes; */
NS_IMETHODIMP nsWebBrowserFind::GetSearchSubframes(PRBool *aSearchSubframes)
{
NS_ENSURE_ARG_POINTER(aSearchSubframes);
*aSearchSubframes = mSearchSubFrames;
return NS_OK;
}
NS_IMETHODIMP nsWebBrowserFind::SetSearchSubframes(PRBool aSearchSubframes)
{
mSearchSubFrames = aSearchSubframes;
return NS_OK;
}
/* attribute boolean searchParentFrames; */
NS_IMETHODIMP nsWebBrowserFind::GetSearchParentFrames(PRBool *aSearchParentFrames)
{
NS_ENSURE_ARG_POINTER(aSearchParentFrames);
*aSearchParentFrames = mSearchParentFrames;
return NS_OK;
}
NS_IMETHODIMP nsWebBrowserFind::SetSearchParentFrames(PRBool aSearchParentFrames)
{
mSearchParentFrames = aSearchParentFrames;
return NS_OK;
}
/*
This method handles finding in a single window (aka frame).
*/
nsresult nsWebBrowserFind::SearchInFrame(nsIDOMWindow* aWindow,
PRBool aWrapping,
PRBool* aDidFind)
{
NS_ENSURE_ARG(aWindow);
NS_ENSURE_ARG_POINTER(aDidFind);
*aDidFind = PR_FALSE;
nsCOMPtr<nsIDOMDocument> domDoc;
nsresult rv = aWindow->GetDocument(getter_AddRefs(domDoc));
NS_ENSURE_SUCCESS(rv, rv);
if (!domDoc) return NS_ERROR_FAILURE;
// Do security check, to ensure that the frame we're searching
// is from the same origin as the frame from which the Find is
// being run.
// get a uri for the window
nsCOMPtr<nsIDocument> theDoc = do_QueryInterface(domDoc);
if (!theDoc) return NS_ERROR_FAILURE;
nsIURI *docURI = theDoc->GetDocumentURI();
NS_ENSURE_TRUE(docURI, NS_ERROR_FAILURE);
// Get the security manager and do the same-origin check
nsCOMPtr<nsIScriptSecurityManager> secMan = do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = secMan->CheckSameOrigin(nsnull, docURI);
if (NS_FAILED(rv)) return rv;
if (!mFind) {
mFind = do_CreateInstance(NS_FIND_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
}
(void) mFind->SetCaseSensitive(mMatchCase);
(void) mFind->SetFindBackwards(mFindBackwards);
// XXX Make and set a line breaker here, once that's implemented.
(void) mFind->SetWordBreaker(0);
// Now make sure the content (for actual finding) and frame (for
// selection) models are up to date.
theDoc->FlushPendingNotifications(Flush_Frames);
nsCOMPtr<nsISelection> sel;
GetFrameSelection(aWindow, getter_AddRefs(sel));
NS_ENSURE_ARG_POINTER(sel);
nsCOMPtr<nsIDOMRange> searchRange (do_CreateInstance(kRangeCID));
NS_ENSURE_ARG_POINTER(searchRange);
nsCOMPtr<nsIDOMRange> startPt (do_CreateInstance(kRangeCID));
NS_ENSURE_ARG_POINTER(startPt);
nsCOMPtr<nsIDOMRange> endPt (do_CreateInstance(kRangeCID));
NS_ENSURE_ARG_POINTER(endPt);
nsCOMPtr<nsIDOMRange> foundRange;
// If !aWrapping, search from selection to end
if (!aWrapping)
rv = GetSearchLimits(searchRange, startPt, endPt, domDoc, sel,
PR_FALSE);
// If aWrapping, search the part of the starting frame
// up to the point where we left off.
else
rv = GetSearchLimits(searchRange, startPt, endPt, domDoc, sel,
PR_TRUE);
NS_ENSURE_SUCCESS(rv, rv);
rv = mFind->Find(mSearchString.get(), searchRange, startPt, endPt,
getter_AddRefs(foundRange));
if (NS_SUCCEEDED(rv) && foundRange)
{
*aDidFind = PR_TRUE;
sel->RemoveAllRanges();
SetSelectionAndScroll(aWindow, foundRange);
}
return rv;
}
// called when we start searching a frame that is not the initial
// focussed frame. Prepare the frame to be searched.
// we clear the selection, so that the search starts from the top
// of the frame.
nsresult nsWebBrowserFind::OnStartSearchFrame(nsIDOMWindow *aWindow)
{
return ClearFrameSelection(aWindow);
}
// called when we are done searching a frame and didn't find anything,
// and about about to start searching the next frame.
nsresult nsWebBrowserFind::OnEndSearchFrame(nsIDOMWindow *aWindow)
{
return NS_OK;
}
void
nsWebBrowserFind::GetFrameSelection(nsIDOMWindow* aWindow,
nsISelection** aSel)
{
*aSel = nsnull;
nsCOMPtr<nsIDOMDocument> domDoc;
aWindow->GetDocument(getter_AddRefs(domDoc));
if (!domDoc) return;
nsCOMPtr<nsIDocument> doc(do_QueryInterface(domDoc));
nsIPresShell* presShell = doc->GetShellAt(0);
if (!presShell) return;
// text input controls have their independent selection controllers
// that we must use when they have focus.
nsPresContext *presContext = presShell->GetPresContext();
nsIFrame *frame = nsnull;
presContext->EventStateManager()->GetFocusedFrame(&frame);
if (!frame) {
nsCOMPtr<nsPIDOMWindow> ourWindow =
do_QueryInterface(doc->GetScriptGlobalObject());
if (ourWindow) {
nsIFocusController *focusController =
ourWindow->GetRootFocusController();
if (focusController) {
nsCOMPtr<nsIDOMElement> focusedElement;
focusController->GetFocusedElement(getter_AddRefs(focusedElement));
if (focusedElement) {
nsCOMPtr<nsIContent> content(do_QueryInterface(focusedElement));
presShell->GetPrimaryFrameFor(content, &frame);
}
}
}
}
nsCOMPtr<nsISelectionController> selCon;
if (frame) {
frame->GetSelectionController(presContext, getter_AddRefs(selCon));
selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, aSel);
if (*aSel) {
PRInt32 count = -1;
(*aSel)->GetRangeCount(&count);
if (count > 0) {
return;
}
NS_RELEASE(*aSel);
}
}
selCon = do_QueryInterface(presShell);
selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, aSel);
}
nsresult nsWebBrowserFind::ClearFrameSelection(nsIDOMWindow *aWindow)
{
NS_ENSURE_ARG(aWindow);
nsCOMPtr<nsISelection> selection;
GetFrameSelection(aWindow, getter_AddRefs(selection));
if (selection)
selection->RemoveAllRanges();
return NS_OK;
}
nsresult nsWebBrowserFind::OnFind(nsIDOMWindow *aFoundWindow)
{
SetCurrentSearchFrame(aFoundWindow);
// We don't want a selection to appear in two frames simultaneously
nsCOMPtr<nsIDOMWindow> lastFocusedWindow = do_QueryReferent(mLastFocusedWindow);
if (lastFocusedWindow && lastFocusedWindow != aFoundWindow)
ClearFrameSelection(lastFocusedWindow);
// focus the frame we found in
nsCOMPtr<nsPIDOMWindow> ourWindow = do_QueryInterface(aFoundWindow);
nsIFocusController *focusController = nsnull;
if (ourWindow)
focusController = ourWindow->GetRootFocusController();
if (focusController)
{
nsCOMPtr<nsIDOMWindowInternal> windowInt = do_QueryInterface(aFoundWindow);
focusController->SetFocusedWindow(windowInt);
mLastFocusedWindow = do_GetWeakReference(aFoundWindow);
}
return NS_OK;
}
/*---------------------------------------------------------------------------
GetDocShellFromWindow
Utility method. This will always return nsnull if no docShell
is returned. Oh why isn't there a better way to do this?
----------------------------------------------------------------------------*/
nsIDocShell *
nsWebBrowserFind::GetDocShellFromWindow(nsIDOMWindow *inWindow)
{
nsCOMPtr<nsIScriptGlobalObject> scriptGO(do_QueryInterface(inWindow));
if (!scriptGO) return nsnull;
return scriptGO->GetDocShell();
}
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