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tenfourfox/embedding/components/find/nsWebBrowserFind.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#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 "nsIScriptSecurityManager.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsPIDOMWindow.h"
#include "nsIURI.h"
#include "nsIDocShell.h"
#include "nsIPresShell.h"
#include "nsPresContext.h"
#include "nsIDocument.h"
#include "nsIDOMDocument.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 "nsFind.h"
#include "nsError.h"
#include "nsFocusManager.h"
#include "mozilla/Services.h"
#include "mozilla/dom/Element.h"
#include "nsISimpleEnumerator.h"
#include "nsContentUtils.h"
#if DEBUG
#include "nsIWebNavigation.h"
#include "nsXPIDLString.h"
#endif
nsWebBrowserFind::nsWebBrowserFind()
: mFindBackwards(false)
, mWrapFind(false)
, mEntireWord(false)
, mMatchCase(false)
, mSearchSubFrames(true)
, mSearchParentFrames(true)
{
}
nsWebBrowserFind::~nsWebBrowserFind()
{
}
NS_IMPL_ISUPPORTS(nsWebBrowserFind, nsIWebBrowserFind,
nsIWebBrowserFindInFrames)
NS_IMETHODIMP
nsWebBrowserFind::FindNext(bool* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
*aResult = 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 =
mozilla::services::GetObserverService();
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
*aResult = searchWindowSupports == nullptr;
if (*aResult) {
return NS_OK;
}
}
// next, look in the current frame. If found, return.
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
rv = SearchInFrame(searchFrame, false, aResult);
if (NS_FAILED(rv)) {
return rv;
}
if (*aResult) {
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;
}
int32_t enumDirection = mFindBackwards ? nsIDocShell::ENUMERATE_BACKWARDS :
nsIDocShell::ENUMERATE_FORWARDS;
nsCOMPtr<nsISimpleEnumerator> docShellEnumerator;
rv = rootDocShell->GetDocShellEnumerator(nsIDocShellTreeItem::typeAll,
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.
bool hasMore, doFind = 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 = curItem->GetWindow();
if (!searchFrame) {
break;
}
OnStartSearchFrame(searchFrame);
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
rv = SearchInFrame(searchFrame, false, aResult);
if (NS_FAILED(rv)) {
return rv;
}
if (*aResult) {
return OnFind(searchFrame); // we are done
}
OnEndSearchFrame(searchFrame);
}
if (curItem.get() == startingItem.get()) {
doFind = 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 = nullptr;
rv = rootDocShell->GetDocShellEnumerator(nsIDocShellTreeItem::typeAll,
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;
}
searchFrame = curItem->GetWindow();
if (!searchFrame) {
rv = NS_ERROR_FAILURE;
break;
}
if (curItem.get() == startingItem.get()) {
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
rv = SearchInFrame(searchFrame, true, aResult);
if (NS_FAILED(rv)) {
return rv;
}
if (*aResult) {
return OnFind(searchFrame); // we are done
}
break;
}
OnStartSearchFrame(searchFrame);
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
rv = SearchInFrame(searchFrame, false, aResult);
if (NS_FAILED(rv)) {
return rv;
}
if (*aResult) {
return OnFind(searchFrame); // we are done
}
OnEndSearchFrame(searchFrame);
}
// remember where we left off
SetCurrentSearchFrame(searchFrame);
NS_ASSERTION(NS_SUCCEEDED(rv), "Something failed");
return rv;
}
NS_IMETHODIMP
nsWebBrowserFind::GetSearchString(char16_t** aSearchString)
{
NS_ENSURE_ARG_POINTER(aSearchString);
*aSearchString = ToNewUnicode(mSearchString);
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::SetSearchString(const char16_t* aSearchString)
{
mSearchString.Assign(aSearchString);
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::GetFindBackwards(bool* aFindBackwards)
{
NS_ENSURE_ARG_POINTER(aFindBackwards);
*aFindBackwards = mFindBackwards;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::SetFindBackwards(bool aFindBackwards)
{
mFindBackwards = aFindBackwards;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::GetWrapFind(bool* aWrapFind)
{
NS_ENSURE_ARG_POINTER(aWrapFind);
*aWrapFind = mWrapFind;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::SetWrapFind(bool aWrapFind)
{
mWrapFind = aWrapFind;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::GetEntireWord(bool* aEntireWord)
{
NS_ENSURE_ARG_POINTER(aEntireWord);
*aEntireWord = mEntireWord;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::SetEntireWord(bool aEntireWord)
{
mEntireWord = aEntireWord;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::GetMatchCase(bool* aMatchCase)
{
NS_ENSURE_ARG_POINTER(aMatchCase);
*aMatchCase = mMatchCase;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::SetMatchCase(bool aMatchCase)
{
mMatchCase = aMatchCase;
return NS_OK;
}
static bool
IsInNativeAnonymousSubtree(nsIContent* aContent)
{
while (aContent) {
nsIContent* bindingParent = aContent->GetBindingParent();
if (bindingParent == aContent) {
return true;
}
aContent = bindingParent;
}
return false;
}
void
nsWebBrowserFind::SetSelectionAndScroll(nsIDOMWindow* aWindow,
nsIDOMRange* aRange)
{
nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(aWindow);
nsCOMPtr<nsIDocument> doc = piWindow->GetDoc();
if (!doc) {
return;
}
nsIPresShell* presShell = doc->GetShell();
if (!presShell) {
return;
}
nsCOMPtr<nsIDOMNode> node;
aRange->GetStartContainer(getter_AddRefs(node));
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
nsIFrame* frame = content->GetPrimaryFrame();
if (!frame) {
return;
}
nsCOMPtr<nsISelectionController> selCon;
frame->GetSelectionController(presShell->GetPresContext(),
getter_AddRefs(selCon));
// since the match could be an anonymous textnode inside a
// <textarea> or text <input>, we need to get the outer frame
nsITextControlFrame* tcFrame = nullptr;
for (; content; content = content->GetParent()) {
if (!IsInNativeAnonymousSubtree(content)) {
nsIFrame* f = content->GetPrimaryFrame();
if (!f) {
return;
}
tcFrame = do_QueryFrame(f);
break;
}
}
nsCOMPtr<nsISelection> selection;
selCon->SetDisplaySelection(nsISelectionController::SELECTION_ON);
selCon->GetSelection(nsISelectionController::SELECTION_NORMAL,
getter_AddRefs(selection));
if (selection) {
selection->RemoveAllRanges();
selection->AddRange(aRange);
nsCOMPtr<nsIFocusManager> fm = do_GetService(FOCUSMANAGER_CONTRACTID);
if (fm) {
if (tcFrame) {
nsCOMPtr<nsIDOMElement> newFocusedElement(do_QueryInterface(content));
fm->SetFocus(newFocusedElement, nsIFocusManager::FLAG_NOSCROLL);
} else {
nsCOMPtr<nsIDOMElement> result;
fm->MoveFocus(aWindow, nullptr, nsIFocusManager::MOVEFOCUS_CARET,
nsIFocusManager::FLAG_NOSCROLL, getter_AddRefs(result));
}
}
// Scroll if necessary to make the selection visible:
// Must be the last thing to do - bug 242056
// After ScrollSelectionIntoView(), the pending notifications might be
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
selCon->ScrollSelectionIntoView(
nsISelectionController::SELECTION_NORMAL,
nsISelectionController::SELECTION_WHOLE_SELECTION,
nsISelectionController::SCROLL_CENTER_VERTICALLY |
nsISelectionController::SCROLL_SYNCHRONOUS);
}
}
// 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);
bodyElement.forget(aNode);
return NS_OK;
}
// 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);
docElement.forget(aNode);
return NS_OK;
}
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);
uint32_t 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,
bool aWrap)
{
NS_ENSURE_ARG_POINTER(aSel);
// There is a selection.
int32_t count = -1;
nsresult rv = aSel->GetRangeCount(&count);
NS_ENSURE_SUCCESS(rv, rv);
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));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIContent> bodyContent(do_QueryInterface(bodyNode));
NS_ENSURE_ARG_POINTER(bodyContent);
uint32_t childCount = bodyContent->GetChildCount();
// There are four possible range endpoints we might use:
// DocumentStart, SelectionStart, SelectionEnd, DocumentEnd.
nsCOMPtr<nsIDOMRange> range;
nsCOMPtr<nsIDOMNode> node;
int32_t 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;
}
NS_IMETHODIMP
nsWebBrowserFind::GetSearchFrames(bool* 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(bool aSearchFrames)
{
mSearchSubFrames = aSearchFrames;
mSearchParentFrames = aSearchFrames;
return NS_OK;
}
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;
}
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;
}
NS_IMETHODIMP
nsWebBrowserFind::GetSearchSubframes(bool* aSearchSubframes)
{
NS_ENSURE_ARG_POINTER(aSearchSubframes);
*aSearchSubframes = mSearchSubFrames;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::SetSearchSubframes(bool aSearchSubframes)
{
mSearchSubFrames = aSearchSubframes;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::GetSearchParentFrames(bool* aSearchParentFrames)
{
NS_ENSURE_ARG_POINTER(aSearchParentFrames);
*aSearchParentFrames = mSearchParentFrames;
return NS_OK;
}
NS_IMETHODIMP
nsWebBrowserFind::SetSearchParentFrames(bool aSearchParentFrames)
{
mSearchParentFrames = aSearchParentFrames;
return NS_OK;
}
/*
This method handles finding in a single window (aka frame).
*/
nsresult
nsWebBrowserFind::SearchInFrame(nsIDOMWindow* aWindow, bool aWrapping,
bool* aDidFind)
{
NS_ENSURE_ARG(aWindow);
NS_ENSURE_ARG_POINTER(aDidFind);
*aDidFind = false;
nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(aWindow);
// Do security check, to ensure that the frame we're searching is
// acccessible from the frame where the Find is being run.
// get a uri for the window
nsCOMPtr<nsIDocument> theDoc = piWindow->GetDoc();
if (!theDoc) {
return NS_ERROR_FAILURE;
}
if (!nsContentUtils::SubjectPrincipal()->Subsumes(theDoc->NodePrincipal())) {
return NS_ERROR_DOM_PROP_ACCESS_DENIED;
}
nsresult rv;
nsCOMPtr<nsIFind> find = do_CreateInstance(NS_FIND_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
(void)find->SetCaseSensitive(mMatchCase);
(void)find->SetFindBackwards(mFindBackwards);
// XXX Make and set a line breaker here, once that's implemented.
(void)find->SetWordBreaker(nullptr);
// 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 = new nsRange(theDoc);
NS_ENSURE_ARG_POINTER(searchRange);
nsCOMPtr<nsIDOMRange> startPt = new nsRange(theDoc);
NS_ENSURE_ARG_POINTER(startPt);
nsCOMPtr<nsIDOMRange> endPt = new nsRange(theDoc);
NS_ENSURE_ARG_POINTER(endPt);
nsCOMPtr<nsIDOMRange> foundRange;
nsCOMPtr<nsIDOMDocument> domDoc = do_QueryInterface(theDoc);
MOZ_ASSERT(domDoc);
// If !aWrapping, search from selection to end
if (!aWrapping)
rv = GetSearchLimits(searchRange, startPt, endPt, domDoc, sel, 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, true);
NS_ENSURE_SUCCESS(rv, rv);
rv = find->Find(mSearchString, searchRange, startPt, endPt,
getter_AddRefs(foundRange));
if (NS_SUCCEEDED(rv) && foundRange) {
*aDidFind = true;
sel->RemoveAllRanges();
// Beware! This may flush notifications via synchronous
// ScrollSelectionIntoView.
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 = nullptr;
nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(aWindow);
nsCOMPtr<nsIDocument> doc = piWindow->GetDoc();
if (!doc) {
return;
}
nsIPresShell* presShell = doc->GetShell();
if (!presShell) {
return;
}
// text input controls have their independent selection controllers that we
// must use when they have focus.
nsPresContext* presContext = presShell->GetPresContext();
nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(aWindow));
nsCOMPtr<nsPIDOMWindow> focusedWindow;
nsCOMPtr<nsIContent> focusedContent = nsFocusManager::GetFocusedDescendant(
window, false, getter_AddRefs(focusedWindow));
nsIFrame* frame =
focusedContent ? focusedContent->GetPrimaryFrame() : nullptr;
nsCOMPtr<nsISelectionController> selCon;
if (frame) {
frame->GetSelectionController(presContext, getter_AddRefs(selCon));
selCon->GetSelection(nsISelectionController::SELECTION_NORMAL, aSel);
if (*aSel) {
int32_t 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);
}
nsCOMPtr<nsIFocusManager> fm = do_GetService(FOCUSMANAGER_CONTRACTID);
if (fm) {
// get the containing frame and focus it. For top-level windows, the right
// window should already be focused.
nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(aFoundWindow));
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMElement> frameElement =
do_QueryInterface(window->GetFrameElementInternal());
if (frameElement) {
fm->SetFocus(frameElement, 0);
}
mLastFocusedWindow = do_GetWeakReference(aFoundWindow);
}
return NS_OK;
}
// Utility method. This will always return nullptr if no docShell is returned.
// Oh why isn't there a better way to do this?
nsIDocShell*
nsWebBrowserFind::GetDocShellFromWindow(nsIDOMWindow* aWindow)
{
nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(aWindow));
if (!window) {
return nullptr;
}
return window->GetDocShell();
}
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