michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "CompositionStringSynthesizer.h"
michael@0: #include "nsContentUtils.h"
michael@0: #include "nsIDocShell.h"
michael@0: #include "nsIFrame.h"
michael@0: #include "nsIPresShell.h"
michael@0: #include "nsIWidget.h"
michael@0: #include "nsPIDOMWindow.h"
michael@0: #include "nsView.h"
michael@0: #include "mozilla/TextEvents.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace dom {
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(CompositionStringSynthesizer,
michael@0:                   nsICompositionStringSynthesizer)
michael@0: 
michael@0: CompositionStringSynthesizer::CompositionStringSynthesizer(
michael@0:                                 nsPIDOMWindow* aWindow)
michael@0: {
michael@0:   mWindow = do_GetWeakReference(aWindow);
michael@0:   mClauses = new TextRangeArray();
michael@0:   ClearInternal();
michael@0: }
michael@0: 
michael@0: CompositionStringSynthesizer::~CompositionStringSynthesizer()
michael@0: {
michael@0: }
michael@0: 
michael@0: void
michael@0: CompositionStringSynthesizer::ClearInternal()
michael@0: {
michael@0:   mString.Truncate();
michael@0:   mClauses->Clear();
michael@0:   mCaret.mRangeType = 0;
michael@0: }
michael@0: 
michael@0: nsIWidget*
michael@0: CompositionStringSynthesizer::GetWidget()
michael@0: {
michael@0:   nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
michael@0:   if (!window) {
michael@0:     return nullptr;
michael@0:   }
michael@0:   nsIDocShell *docShell = window->GetDocShell();
michael@0:   if (!docShell) {
michael@0:     return nullptr;
michael@0:   }
michael@0:   nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
michael@0:   if (!presShell) {
michael@0:     return nullptr;
michael@0:   }
michael@0:   nsIFrame* frame = presShell->GetRootFrame();
michael@0:   if (!frame) {
michael@0:     return nullptr;
michael@0:   }
michael@0:   return frame->GetView()->GetNearestWidget(nullptr);
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: CompositionStringSynthesizer::SetString(const nsAString& aString)
michael@0: {
michael@0:   nsCOMPtr<nsIWidget> widget = GetWidget();
michael@0:   NS_ENSURE_TRUE(widget && !widget->Destroyed(), NS_ERROR_NOT_AVAILABLE);
michael@0: 
michael@0:   mString = aString;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: CompositionStringSynthesizer::AppendClause(uint32_t aLength,
michael@0:                                            uint32_t aAttribute)
michael@0: {
michael@0:   nsCOMPtr<nsIWidget> widget = GetWidget();
michael@0:   NS_ENSURE_TRUE(widget && !widget->Destroyed(), NS_ERROR_NOT_AVAILABLE);
michael@0: 
michael@0:   switch (aAttribute) {
michael@0:     case ATTR_RAWINPUT:
michael@0:     case ATTR_SELECTEDRAWTEXT:
michael@0:     case ATTR_CONVERTEDTEXT:
michael@0:     case ATTR_SELECTEDCONVERTEDTEXT: {
michael@0:       TextRange textRange;
michael@0:       textRange.mStartOffset =
michael@0:         mClauses->IsEmpty() ? 0 : mClauses->LastElement().mEndOffset;
michael@0:       textRange.mEndOffset = textRange.mStartOffset + aLength;
michael@0:       textRange.mRangeType = aAttribute;
michael@0:       mClauses->AppendElement(textRange);
michael@0:       return NS_OK;
michael@0:     }
michael@0:     default:
michael@0:       return NS_ERROR_INVALID_ARG;
michael@0:   }
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: CompositionStringSynthesizer::SetCaret(uint32_t aOffset, uint32_t aLength)
michael@0: {
michael@0:   nsCOMPtr<nsIWidget> widget = GetWidget();
michael@0:   NS_ENSURE_TRUE(widget && !widget->Destroyed(), NS_ERROR_NOT_AVAILABLE);
michael@0: 
michael@0:   mCaret.mStartOffset = aOffset;
michael@0:   mCaret.mEndOffset = mCaret.mStartOffset + aLength;
michael@0:   mCaret.mRangeType = NS_TEXTRANGE_CARETPOSITION;
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: CompositionStringSynthesizer::DispatchEvent(bool* aDefaultPrevented)
michael@0: {
michael@0:   NS_ENSURE_ARG_POINTER(aDefaultPrevented);
michael@0:   nsCOMPtr<nsIWidget> widget = GetWidget();
michael@0:   NS_ENSURE_TRUE(widget && !widget->Destroyed(), NS_ERROR_NOT_AVAILABLE);
michael@0: 
michael@0:   if (!nsContentUtils::IsCallerChrome()) {
michael@0:     return NS_ERROR_DOM_SECURITY_ERR;
michael@0:   }
michael@0: 
michael@0:   if (!mClauses->IsEmpty() &&
michael@0:       mClauses->LastElement().mEndOffset != mString.Length()) {
michael@0:     NS_WARNING("Sum of length of the all clauses must be same as the string "
michael@0:                "length");
michael@0:     ClearInternal();
michael@0:     return NS_ERROR_ILLEGAL_VALUE;
michael@0:   }
michael@0:   if (mCaret.mRangeType == NS_TEXTRANGE_CARETPOSITION) {
michael@0:     if (mCaret.mEndOffset > mString.Length()) {
michael@0:       NS_WARNING("Caret position is out of the composition string");
michael@0:       ClearInternal();
michael@0:       return NS_ERROR_ILLEGAL_VALUE;
michael@0:     }
michael@0:     mClauses->AppendElement(mCaret);
michael@0:   }
michael@0: 
michael@0:   WidgetTextEvent textEvent(true, NS_TEXT_TEXT, widget);
michael@0:   textEvent.time = PR_IntervalNow();
michael@0:   textEvent.theText = mString;
michael@0:   if (!mClauses->IsEmpty()) {
michael@0:     textEvent.mRanges = mClauses;
michael@0:   }
michael@0: 
michael@0:   // XXX How should we set false for this on b2g?
michael@0:   textEvent.mFlags.mIsSynthesizedForTests = true;
michael@0: 
michael@0:   nsEventStatus status = nsEventStatus_eIgnore;
michael@0:   nsresult rv = widget->DispatchEvent(&textEvent, status);
michael@0:   *aDefaultPrevented = (status == nsEventStatus_eConsumeNoDefault);
michael@0: 
michael@0:   ClearInternal();
michael@0: 
michael@0:   NS_ENSURE_SUCCESS(rv, rv);
michael@0: 
michael@0:   return NS_OK;
michael@0: }
michael@0: 
michael@0: } // namespace dom
michael@0: } // namespace mozilla