The Tor Browser / annotate

layout/forms/nsTextControlFrame.h@97036ab72558 (annotated)

layout/forms/nsTextControlFrame.h

Tue, 06 Jan 2015 21:39:09 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Tue, 06 Jan 2015 21:39:09 +0100
branch
TOR_BUG_9701
changeset 8
97036ab72558
permissions
-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0 2 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #ifndef nsTextControlFrame_h___
michael@0 7 #define nsTextControlFrame_h___
michael@0 8
michael@0 9 #include "mozilla/Attributes.h"
michael@0 10 #include "nsContainerFrame.h"
michael@0 11 #include "nsIAnonymousContentCreator.h"
michael@0 12 #include "nsITextControlFrame.h"
michael@0 13 #include "nsITextControlElement.h"
michael@0 14 #include "nsIStatefulFrame.h"
michael@0 15
michael@0 16 class nsISelectionController;
michael@0 17 class EditorInitializerEntryTracker;
michael@0 18 class nsTextEditorState;
michael@0 19 class nsIEditor;
michael@0 20 namespace mozilla {
michael@0 21 namespace dom {
michael@0 22 class Element;
michael@0 23 }
michael@0 24 }
michael@0 25
michael@0 26 class nsTextControlFrame : public nsContainerFrame,
michael@0 27 public nsIAnonymousContentCreator,
michael@0 28 public nsITextControlFrame,
michael@0 29 public nsIStatefulFrame
michael@0 30 {
michael@0 31 public:
michael@0 32 NS_DECL_FRAMEARENA_HELPERS
michael@0 33
michael@0 34 NS_DECLARE_FRAME_PROPERTY(ContentScrollPos, DestroyPoint)
michael@0 35
michael@0 36 nsTextControlFrame(nsIPresShell* aShell, nsStyleContext* aContext);
michael@0 37 virtual ~nsTextControlFrame();
michael@0 38
michael@0 39 virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
michael@0 40
michael@0 41 virtual nsIScrollableFrame* GetScrollTargetFrame() MOZ_OVERRIDE {
michael@0 42 return do_QueryFrame(GetFirstPrincipalChild());
michael@0 43 }
michael@0 44
michael@0 45 virtual nscoord GetMinWidth(nsRenderingContext* aRenderingContext) MOZ_OVERRIDE;
michael@0 46 virtual nscoord GetPrefWidth(nsRenderingContext* aRenderingContext) MOZ_OVERRIDE;
michael@0 47
michael@0 48 virtual nsSize ComputeAutoSize(nsRenderingContext *aRenderingContext,
michael@0 49 nsSize aCBSize, nscoord aAvailableWidth,
michael@0 50 nsSize aMargin, nsSize aBorder,
michael@0 51 nsSize aPadding, bool aShrinkWrap) MOZ_OVERRIDE;
michael@0 52
michael@0 53 virtual nsresult Reflow(nsPresContext* aPresContext,
michael@0 54 nsHTMLReflowMetrics& aDesiredSize,
michael@0 55 const nsHTMLReflowState& aReflowState,
michael@0 56 nsReflowStatus& aStatus) MOZ_OVERRIDE;
michael@0 57
michael@0 58 virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState) MOZ_OVERRIDE;
michael@0 59 virtual bool IsCollapsed() MOZ_OVERRIDE;
michael@0 60
michael@0 61 virtual bool IsLeaf() const MOZ_OVERRIDE;
michael@0 62
michael@0 63 #ifdef ACCESSIBILITY
michael@0 64 virtual mozilla::a11y::AccType AccessibleType() MOZ_OVERRIDE;
michael@0 65 #endif
michael@0 66
michael@0 67 #ifdef DEBUG_FRAME_DUMP
michael@0 68 virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE
michael@0 69 {
michael@0 70 aResult.AssignLiteral("nsTextControlFrame");
michael@0 71 return NS_OK;
michael@0 72 }
michael@0 73 #endif
michael@0 74
michael@0 75 virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
michael@0 76 {
michael@0 77 // nsStackFrame is already both of these, but that's somewhat bogus,
michael@0 78 // and we really mean it.
michael@0 79 return nsContainerFrame::IsFrameOfType(aFlags &
michael@0 80 ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
michael@0 81 }
michael@0 82
michael@0 83 // nsIAnonymousContentCreator
michael@0 84 virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) MOZ_OVERRIDE;
michael@0 85 virtual void AppendAnonymousContentTo(nsBaseContentList& aElements,
michael@0 86 uint32_t aFilter) MOZ_OVERRIDE;
michael@0 87
michael@0 88 // Utility methods to set current widget state
michael@0 89
michael@0 90 virtual nsresult SetInitialChildList(ChildListID aListID,
michael@0 91 nsFrameList& aChildList) MOZ_OVERRIDE;
michael@0 92
michael@0 93 virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
michael@0 94 const nsRect& aDirtyRect,
michael@0 95 const nsDisplayListSet& aLists) MOZ_OVERRIDE;
michael@0 96
michael@0 97 virtual mozilla::dom::Element* GetPseudoElement(nsCSSPseudoElements::Type aType) MOZ_OVERRIDE;
michael@0 98
michael@0 99 //==== BEGIN NSIFORMCONTROLFRAME
michael@0 100 virtual void SetFocus(bool aOn , bool aRepaint) MOZ_OVERRIDE;
michael@0 101 virtual nsresult SetFormProperty(nsIAtom* aName, const nsAString& aValue) MOZ_OVERRIDE;
michael@0 102
michael@0 103 //==== END NSIFORMCONTROLFRAME
michael@0 104
michael@0 105 //==== NSITEXTCONTROLFRAME
michael@0 106
michael@0 107 NS_IMETHOD GetEditor(nsIEditor **aEditor) MOZ_OVERRIDE;
michael@0 108 NS_IMETHOD SetSelectionStart(int32_t aSelectionStart) MOZ_OVERRIDE;
michael@0 109 NS_IMETHOD SetSelectionEnd(int32_t aSelectionEnd) MOZ_OVERRIDE;
michael@0 110 NS_IMETHOD SetSelectionRange(int32_t aSelectionStart,
michael@0 111 int32_t aSelectionEnd,
michael@0 112 SelectionDirection aDirection = eNone) MOZ_OVERRIDE;
michael@0 113 NS_IMETHOD GetSelectionRange(int32_t* aSelectionStart,
michael@0 114 int32_t* aSelectionEnd,
michael@0 115 SelectionDirection* aDirection = nullptr) MOZ_OVERRIDE;
michael@0 116 NS_IMETHOD GetOwnedSelectionController(nsISelectionController** aSelCon) MOZ_OVERRIDE;
michael@0 117 virtual nsFrameSelection* GetOwnedFrameSelection() MOZ_OVERRIDE;
michael@0 118
michael@0 119 nsresult GetPhonetic(nsAString& aPhonetic) MOZ_OVERRIDE;
michael@0 120
michael@0 121 /**
michael@0 122 * Ensure mEditor is initialized with the proper flags and the default value.
michael@0 123 * @throws NS_ERROR_NOT_INITIALIZED if mEditor has not been created
michael@0 124 * @throws various and sundry other things
michael@0 125 */
michael@0 126 virtual nsresult EnsureEditorInitialized() MOZ_OVERRIDE;
michael@0 127
michael@0 128 //==== END NSITEXTCONTROLFRAME
michael@0 129
michael@0 130 //==== NSISTATEFULFRAME
michael@0 131
michael@0 132 NS_IMETHOD SaveState(nsPresState** aState) MOZ_OVERRIDE;
michael@0 133 NS_IMETHOD RestoreState(nsPresState* aState) MOZ_OVERRIDE;
michael@0 134
michael@0 135 //=== END NSISTATEFULFRAME
michael@0 136
michael@0 137 //==== OVERLOAD of nsIFrame
michael@0 138 virtual nsIAtom* GetType() const MOZ_OVERRIDE;
michael@0 139
michael@0 140 /** handler for attribute changes to mContent */
michael@0 141 virtual nsresult AttributeChanged(int32_t aNameSpaceID,
michael@0 142 nsIAtom* aAttribute,
michael@0 143 int32_t aModType) MOZ_OVERRIDE;
michael@0 144
michael@0 145 nsresult GetText(nsString& aText);
michael@0 146
michael@0 147 virtual nsresult PeekOffset(nsPeekOffsetStruct *aPos) MOZ_OVERRIDE;
michael@0 148
michael@0 149 NS_DECL_QUERYFRAME
michael@0 150
michael@0 151 // Temp reference to scriptrunner
michael@0 152 // We could make these auto-Revoking via the "delete" entry for safety
michael@0 153 NS_DECLARE_FRAME_PROPERTY(TextControlInitializer, nullptr)
michael@0 154
michael@0 155 protected:
michael@0 156 /**
michael@0 157 * Launch the reflow on the child frames - see nsTextControlFrame::Reflow()
michael@0 158 */
michael@0 159 void ReflowTextControlChild(nsIFrame* aFrame,
michael@0 160 nsPresContext* aPresContext,
michael@0 161 const nsHTMLReflowState& aReflowState,
michael@0 162 nsReflowStatus& aStatus,
michael@0 163 nsHTMLReflowMetrics& aParentDesiredSize);
michael@0 164
michael@0 165 public: //for methods who access nsTextControlFrame directly
michael@0 166 void SetValueChanged(bool aValueChanged);
michael@0 167
michael@0 168 // called by the focus listener
michael@0 169 nsresult MaybeBeginSecureKeyboardInput();
michael@0 170 void MaybeEndSecureKeyboardInput();
michael@0 171
michael@0 172 #define DEFINE_TEXTCTRL_FORWARDER(type, name) \
michael@0 173 type name() { \
michael@0 174 nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent()); \
michael@0 175 NS_ASSERTION(txtCtrl, "Content not a text control element"); \
michael@0 176 return txtCtrl->name(); \
michael@0 177 }
michael@0 178 #define DEFINE_TEXTCTRL_CONST_FORWARDER(type, name) \
michael@0 179 type name() const { \
michael@0 180 nsCOMPtr<nsITextControlElement> txtCtrl = do_QueryInterface(GetContent()); \
michael@0 181 NS_ASSERTION(txtCtrl, "Content not a text control element"); \
michael@0 182 return txtCtrl->name(); \
michael@0 183 }
michael@0 184
michael@0 185 DEFINE_TEXTCTRL_CONST_FORWARDER(bool, IsSingleLineTextControl)
michael@0 186 DEFINE_TEXTCTRL_CONST_FORWARDER(bool, IsTextArea)
michael@0 187 DEFINE_TEXTCTRL_CONST_FORWARDER(bool, IsPlainTextControl)
michael@0 188 DEFINE_TEXTCTRL_CONST_FORWARDER(bool, IsPasswordTextControl)
michael@0 189 DEFINE_TEXTCTRL_FORWARDER(int32_t, GetCols)
michael@0 190 DEFINE_TEXTCTRL_FORWARDER(int32_t, GetWrapCols)
michael@0 191 DEFINE_TEXTCTRL_FORWARDER(int32_t, GetRows)
michael@0 192
michael@0 193 #undef DEFINE_TEXTCTRL_CONST_FORWARDER
michael@0 194 #undef DEFINE_TEXTCTRL_FORWARDER
michael@0 195
michael@0 196 protected:
michael@0 197 class EditorInitializer;
michael@0 198 friend class EditorInitializer;
michael@0 199 friend class nsTextEditorState; // needs access to UpdateValueDisplay
michael@0 200
michael@0 201 class EditorInitializer : public nsRunnable {
michael@0 202 public:
michael@0 203 EditorInitializer(nsTextControlFrame* aFrame) :
michael@0 204 mFrame(aFrame) {}
michael@0 205
michael@0 206 NS_IMETHOD Run() MOZ_OVERRIDE;
michael@0 207
michael@0 208 // avoids use of nsWeakFrame
michael@0 209 void Revoke() {
michael@0 210 mFrame = nullptr;
michael@0 211 }
michael@0 212
michael@0 213 private:
michael@0 214 nsTextControlFrame* mFrame;
michael@0 215 };
michael@0 216
michael@0 217 class ScrollOnFocusEvent;
michael@0 218 friend class ScrollOnFocusEvent;
michael@0 219
michael@0 220 class ScrollOnFocusEvent : public nsRunnable {
michael@0 221 public:
michael@0 222 ScrollOnFocusEvent(nsTextControlFrame* aFrame) :
michael@0 223 mFrame(aFrame) {}
michael@0 224
michael@0 225 NS_DECL_NSIRUNNABLE
michael@0 226
michael@0 227 void Revoke() {
michael@0 228 mFrame = nullptr;
michael@0 229 }
michael@0 230
michael@0 231 private:
michael@0 232 nsTextControlFrame* mFrame;
michael@0 233 };
michael@0 234
michael@0 235 nsresult OffsetToDOMPoint(int32_t aOffset, nsIDOMNode** aResult, int32_t* aPosition);
michael@0 236
michael@0 237 /**
michael@0 238 * Update the textnode under our anonymous div to show the new
michael@0 239 * value. This should only be called when we have no editor yet.
michael@0 240 * @throws NS_ERROR_UNEXPECTED if the div has no text content
michael@0 241 */
michael@0 242 nsresult UpdateValueDisplay(bool aNotify,
michael@0 243 bool aBeforeEditorInit = false,
michael@0 244 const nsAString *aValue = nullptr);
michael@0 245
michael@0 246 /**
michael@0 247 * Get the maxlength attribute
michael@0 248 * @param aMaxLength the value of the max length attr
michael@0 249 * @returns false if attr not defined
michael@0 250 */
michael@0 251 bool GetMaxLength(int32_t* aMaxLength);
michael@0 252
michael@0 253 /**
michael@0 254 * Find out whether an attribute exists on the content or not.
michael@0 255 * @param aAtt the attribute to determine the existence of
michael@0 256 * @returns false if it does not exist
michael@0 257 */
michael@0 258 bool AttributeExists(nsIAtom *aAtt) const
michael@0 259 { return mContent && mContent->HasAttr(kNameSpaceID_None, aAtt); }
michael@0 260
michael@0 261 /**
michael@0 262 * We call this when we are being destroyed or removed from the PFM.
michael@0 263 * @param aPresContext the current pres context
michael@0 264 */
michael@0 265 void PreDestroy();
michael@0 266
michael@0 267 // Compute our intrinsic size. This does not include any borders, paddings,
michael@0 268 // etc. Just the size of our actual area for the text (and the scrollbars,
michael@0 269 // for <textarea>).
michael@0 270 nsresult CalcIntrinsicSize(nsRenderingContext* aRenderingContext,
michael@0 271 nsSize& aIntrinsicSize,
michael@0 272 float aFontSizeInflation);
michael@0 273
michael@0 274 nsresult ScrollSelectionIntoView() MOZ_OVERRIDE;
michael@0 275
michael@0 276 private:
michael@0 277 //helper methods
michael@0 278 nsresult SetSelectionInternal(nsIDOMNode *aStartNode, int32_t aStartOffset,
michael@0 279 nsIDOMNode *aEndNode, int32_t aEndOffset,
michael@0 280 SelectionDirection aDirection = eNone);
michael@0 281 nsresult SelectAllOrCollapseToEndOfText(bool aSelect);
michael@0 282 nsresult SetSelectionEndPoints(int32_t aSelStart, int32_t aSelEnd,
michael@0 283 SelectionDirection aDirection = eNone);
michael@0 284
michael@0 285 /**
michael@0 286 * Return the root DOM element, and implicitly initialize the editor if needed.
michael@0 287 */
michael@0 288 mozilla::dom::Element* GetRootNodeAndInitializeEditor();
michael@0 289 nsresult GetRootNodeAndInitializeEditor(nsIDOMElement **aRootElement);
michael@0 290
michael@0 291 void FinishedInitializer() {
michael@0 292 Properties().Delete(TextControlInitializer());
michael@0 293 }
michael@0 294
michael@0 295 private:
michael@0 296 // these packed bools could instead use the high order bits on mState, saving 4 bytes
michael@0 297 bool mEditorHasBeenInitialized;
michael@0 298 bool mIsProcessing;
michael@0 299 // Keep track if we have asked a placeholder node creation.
michael@0 300 bool mUsePlaceholder;
michael@0 301
michael@0 302 #ifdef DEBUG
michael@0 303 bool mInEditorInitialization;
michael@0 304 friend class EditorInitializerEntryTracker;
michael@0 305 #endif
michael@0 306
michael@0 307 nsRevocableEventPtr<ScrollOnFocusEvent> mScrollEvent;
michael@0 308 };
michael@0 309
michael@0 310 #endif
michael@0 311
michael@0 312

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