1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/base/CompositionStringSynthesizer.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,160 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "CompositionStringSynthesizer.h"
1.10 +#include "nsContentUtils.h"
1.11 +#include "nsIDocShell.h"
1.12 +#include "nsIFrame.h"
1.13 +#include "nsIPresShell.h"
1.14 +#include "nsIWidget.h"
1.15 +#include "nsPIDOMWindow.h"
1.16 +#include "nsView.h"
1.17 +#include "mozilla/TextEvents.h"
1.18 +
1.19 +namespace mozilla {
1.20 +namespace dom {
1.21 +
1.22 +NS_IMPL_ISUPPORTS(CompositionStringSynthesizer,
1.23 + nsICompositionStringSynthesizer)
1.24 +
1.25 +CompositionStringSynthesizer::CompositionStringSynthesizer(
1.26 + nsPIDOMWindow* aWindow)
1.27 +{
1.28 + mWindow = do_GetWeakReference(aWindow);
1.29 + mClauses = new TextRangeArray();
1.30 + ClearInternal();
1.31 +}
1.32 +
1.33 +CompositionStringSynthesizer::~CompositionStringSynthesizer()
1.34 +{
1.35 +}
1.36 +
1.37 +void
1.38 +CompositionStringSynthesizer::ClearInternal()
1.39 +{
1.40 + mString.Truncate();
1.41 + mClauses->Clear();
1.42 + mCaret.mRangeType = 0;
1.43 +}
1.44 +
1.45 +nsIWidget*
1.46 +CompositionStringSynthesizer::GetWidget()
1.47 +{
1.48 + nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
1.49 + if (!window) {
1.50 + return nullptr;
1.51 + }
1.52 + nsIDocShell *docShell = window->GetDocShell();
1.53 + if (!docShell) {
1.54 + return nullptr;
1.55 + }
1.56 + nsCOMPtr<nsIPresShell> presShell = docShell->GetPresShell();
1.57 + if (!presShell) {
1.58 + return nullptr;
1.59 + }
1.60 + nsIFrame* frame = presShell->GetRootFrame();
1.61 + if (!frame) {
1.62 + return nullptr;
1.63 + }
1.64 + return frame->GetView()->GetNearestWidget(nullptr);
1.65 +}
1.66 +
1.67 +NS_IMETHODIMP
1.68 +CompositionStringSynthesizer::SetString(const nsAString& aString)
1.69 +{
1.70 + nsCOMPtr<nsIWidget> widget = GetWidget();
1.71 + NS_ENSURE_TRUE(widget && !widget->Destroyed(), NS_ERROR_NOT_AVAILABLE);
1.72 +
1.73 + mString = aString;
1.74 + return NS_OK;
1.75 +}
1.76 +
1.77 +NS_IMETHODIMP
1.78 +CompositionStringSynthesizer::AppendClause(uint32_t aLength,
1.79 + uint32_t aAttribute)
1.80 +{
1.81 + nsCOMPtr<nsIWidget> widget = GetWidget();
1.82 + NS_ENSURE_TRUE(widget && !widget->Destroyed(), NS_ERROR_NOT_AVAILABLE);
1.83 +
1.84 + switch (aAttribute) {
1.85 + case ATTR_RAWINPUT:
1.86 + case ATTR_SELECTEDRAWTEXT:
1.87 + case ATTR_CONVERTEDTEXT:
1.88 + case ATTR_SELECTEDCONVERTEDTEXT: {
1.89 + TextRange textRange;
1.90 + textRange.mStartOffset =
1.91 + mClauses->IsEmpty() ? 0 : mClauses->LastElement().mEndOffset;
1.92 + textRange.mEndOffset = textRange.mStartOffset + aLength;
1.93 + textRange.mRangeType = aAttribute;
1.94 + mClauses->AppendElement(textRange);
1.95 + return NS_OK;
1.96 + }
1.97 + default:
1.98 + return NS_ERROR_INVALID_ARG;
1.99 + }
1.100 +}
1.101 +
1.102 +NS_IMETHODIMP
1.103 +CompositionStringSynthesizer::SetCaret(uint32_t aOffset, uint32_t aLength)
1.104 +{
1.105 + nsCOMPtr<nsIWidget> widget = GetWidget();
1.106 + NS_ENSURE_TRUE(widget && !widget->Destroyed(), NS_ERROR_NOT_AVAILABLE);
1.107 +
1.108 + mCaret.mStartOffset = aOffset;
1.109 + mCaret.mEndOffset = mCaret.mStartOffset + aLength;
1.110 + mCaret.mRangeType = NS_TEXTRANGE_CARETPOSITION;
1.111 + return NS_OK;
1.112 +}
1.113 +
1.114 +NS_IMETHODIMP
1.115 +CompositionStringSynthesizer::DispatchEvent(bool* aDefaultPrevented)
1.116 +{
1.117 + NS_ENSURE_ARG_POINTER(aDefaultPrevented);
1.118 + nsCOMPtr<nsIWidget> widget = GetWidget();
1.119 + NS_ENSURE_TRUE(widget && !widget->Destroyed(), NS_ERROR_NOT_AVAILABLE);
1.120 +
1.121 + if (!nsContentUtils::IsCallerChrome()) {
1.122 + return NS_ERROR_DOM_SECURITY_ERR;
1.123 + }
1.124 +
1.125 + if (!mClauses->IsEmpty() &&
1.126 + mClauses->LastElement().mEndOffset != mString.Length()) {
1.127 + NS_WARNING("Sum of length of the all clauses must be same as the string "
1.128 + "length");
1.129 + ClearInternal();
1.130 + return NS_ERROR_ILLEGAL_VALUE;
1.131 + }
1.132 + if (mCaret.mRangeType == NS_TEXTRANGE_CARETPOSITION) {
1.133 + if (mCaret.mEndOffset > mString.Length()) {
1.134 + NS_WARNING("Caret position is out of the composition string");
1.135 + ClearInternal();
1.136 + return NS_ERROR_ILLEGAL_VALUE;
1.137 + }
1.138 + mClauses->AppendElement(mCaret);
1.139 + }
1.140 +
1.141 + WidgetTextEvent textEvent(true, NS_TEXT_TEXT, widget);
1.142 + textEvent.time = PR_IntervalNow();
1.143 + textEvent.theText = mString;
1.144 + if (!mClauses->IsEmpty()) {
1.145 + textEvent.mRanges = mClauses;
1.146 + }
1.147 +
1.148 + // XXX How should we set false for this on b2g?
1.149 + textEvent.mFlags.mIsSynthesizedForTests = true;
1.150 +
1.151 + nsEventStatus status = nsEventStatus_eIgnore;
1.152 + nsresult rv = widget->DispatchEvent(&textEvent, status);
1.153 + *aDefaultPrevented = (status == nsEventStatus_eConsumeNoDefault);
1.154 +
1.155 + ClearInternal();
1.156 +
1.157 + NS_ENSURE_SUCCESS(rv, rv);
1.158 +
1.159 + return NS_OK;
1.160 +}
1.161 +
1.162 +} // namespace dom
1.163 +} // namespace mozilla
