Web Inspector: add generic support for undo-ing DOM edits.

Web Inspector: add generic support for undo-ing DOM edits.
https://bugs.webkit.org/show_bug.cgi?id=77875

Reviewed by Yury Semikhatsky.

Source/WebCore:

This change introduces InspectorHistory::Action that encapsulates all DOM modifications
initiated by the inspector. There is a way to undo these actions up until the undoable
state marker.

Tests: inspector/elements/undo-dom-edits-2.html
       inspector/elements/undo-dom-edits.html
       inspector/styles/undo-add-property.html
       inspector/styles/undo-change-property.html
       inspector/styles/undo-property-toggle.html

* CMakeLists.txt:
* GNUmakefile.list.am:
* Target.pri:
* WebCore.gypi:
* WebCore.vcproj/WebCore.vcproj:
* WebCore.xcodeproj/project.pbxproj:
* inspector/Inspector.json:
* inspector/InspectorAllInOne.cpp:
* inspector/InspectorCSSAgent.cpp:
(InspectorCSSAgent::StyleSheetAction):
(WebCore::InspectorCSSAgent::StyleSheetAction::StyleSheetAction):
(WebCore::InspectorCSSAgent::StyleSheetAction::perform):
(WebCore::InspectorCSSAgent::StyleSheetAction::undo):
(WebCore):
(InspectorCSSAgent::SetStyleSheetTextAction):
(WebCore::InspectorCSSAgent::SetStyleSheetTextAction::SetStyleSheetTextAction):
(WebCore::InspectorCSSAgent::SetStyleSheetTextAction::perform):
(WebCore::InspectorCSSAgent::SetStyleSheetTextAction::undo):
(InspectorCSSAgent::SetPropertyTextAction):
(WebCore::InspectorCSSAgent::SetPropertyTextAction::SetPropertyTextAction):
(WebCore::InspectorCSSAgent::SetPropertyTextAction::toString):
(WebCore::InspectorCSSAgent::SetPropertyTextAction::perform):
(WebCore::InspectorCSSAgent::SetPropertyTextAction::undo):
(WebCore::InspectorCSSAgent::SetPropertyTextAction::mergeId):
(WebCore::InspectorCSSAgent::SetPropertyTextAction::merge):
(InspectorCSSAgent::TogglePropertyAction):
(WebCore::InspectorCSSAgent::TogglePropertyAction::TogglePropertyAction):
(WebCore::InspectorCSSAgent::TogglePropertyAction::perform):
(WebCore::InspectorCSSAgent::TogglePropertyAction::undo):
(WebCore::InspectorCSSAgent::getStyleSheetText):
(WebCore::InspectorCSSAgent::setStyleSheetText):
(WebCore::InspectorCSSAgent::setPropertyText):
(WebCore::InspectorCSSAgent::toggleProperty):
* inspector/InspectorCSSAgent.h:
(InspectorCSSAgent):
* inspector/InspectorDOMAgent.cpp:
(InspectorDOMAgent::DOMAction):
(WebCore::InspectorDOMAgent::DOMAction::DOMAction):
(WebCore::InspectorDOMAgent::DOMAction::perform):
(WebCore::InspectorDOMAgent::DOMAction::undo):
(WebCore):
(InspectorDOMAgent::RemoveChildAction):
(WebCore::InspectorDOMAgent::RemoveChildAction::RemoveChildAction):
(WebCore::InspectorDOMAgent::RemoveChildAction::perform):
(WebCore::InspectorDOMAgent::RemoveChildAction::undo):
(InspectorDOMAgent::InsertBeforeAction):
(WebCore::InspectorDOMAgent::InsertBeforeAction::InsertBeforeAction):
(WebCore::InspectorDOMAgent::InsertBeforeAction::perform):
(WebCore::InspectorDOMAgent::InsertBeforeAction::undo):
(InspectorDOMAgent::RemoveAttributeAction):
(WebCore::InspectorDOMAgent::RemoveAttributeAction::RemoveAttributeAction):
(WebCore::InspectorDOMAgent::RemoveAttributeAction::perform):
(WebCore::InspectorDOMAgent::RemoveAttributeAction::undo):
(InspectorDOMAgent::SetAttributeAction):
(WebCore::InspectorDOMAgent::SetAttributeAction::SetAttributeAction):
(WebCore::InspectorDOMAgent::SetAttributeAction::perform):
(WebCore::InspectorDOMAgent::SetAttributeAction::undo):
(InspectorDOMAgent::SetOuterHTMLAction):
(WebCore::InspectorDOMAgent::SetOuterHTMLAction::SetOuterHTMLAction):
(WebCore::InspectorDOMAgent::SetOuterHTMLAction::perform):
(WebCore::InspectorDOMAgent::SetOuterHTMLAction::undo):
(WebCore::InspectorDOMAgent::SetOuterHTMLAction::newNode):
(InspectorDOMAgent::ReplaceWholeTextAction):
(WebCore::InspectorDOMAgent::ReplaceWholeTextAction::ReplaceWholeTextAction):
(WebCore::InspectorDOMAgent::ReplaceWholeTextAction::perform):
(WebCore::InspectorDOMAgent::ReplaceWholeTextAction::undo):
(WebCore::InspectorDOMAgent::InspectorDOMAgent):
(WebCore::InspectorDOMAgent::reset):
(WebCore::InspectorDOMAgent::setAttributeValue):
(WebCore::InspectorDOMAgent::setAttributesAsText):
(WebCore::InspectorDOMAgent::removeAttribute):
(WebCore::InspectorDOMAgent::removeNode):
(WebCore::InspectorDOMAgent::setNodeName):
(WebCore::InspectorDOMAgent::setOuterHTML):
(WebCore::InspectorDOMAgent::setNodeValue):
(WebCore::InspectorDOMAgent::moveTo):
(WebCore::InspectorDOMAgent::undo):
(WebCore::InspectorDOMAgent::markUndoableState):
* inspector/InspectorDOMAgent.h:
(InspectorDOMAgent):
(WebCore::InspectorDOMAgent::history):
* inspector/InspectorHistory.cpp: Added.
(WebCore::InspectorHistory::Action::Action):
(WebCore):
(WebCore::InspectorHistory::Action::~Action):
(WebCore::InspectorHistory::Action::toString):
(WebCore::InspectorHistory::Action::isUndoableStateMark):
(WebCore::InspectorHistory::Action::mergeId):
(WebCore::InspectorHistory::Action::merge):
(WebCore::InspectorHistory::InspectorHistory):
(WebCore::InspectorHistory::~InspectorHistory):
(WebCore::InspectorHistory::perform):
(WebCore::InspectorHistory::markUndoableState):
(WebCore::InspectorHistory::undo):
(WebCore::InspectorHistory::reset):
* inspector/InspectorHistory.h: Added.
(WebCore):
(InspectorHistory):
(Action):
* inspector/InspectorStyleSheet.cpp:
(WebCore::InspectorStyle::setPropertyText):
(WebCore::InspectorStyle::styleText):
(WebCore::InspectorStyleSheet::addRule):
(WebCore::InspectorStyleSheet::buildObjectForStyleSheet):
(WebCore::InspectorStyleSheet::buildObjectForStyle):
(WebCore::InspectorStyleSheet::setPropertyText):
(WebCore::InspectorStyleSheet::getText):
(WebCore::InspectorStyleSheetForInlineStyle::getText):
* inspector/InspectorStyleSheet.h:
(InspectorStyle):
(InspectorStyleSheet):
(InspectorStyleSheetForInlineStyle):
* inspector/front-end/CSSStyleModel.js:
(WebInspector.CSSProperty.prototype.setText):
* inspector/front-end/ElementsPanel.js:
(WebInspector.ElementsPanel.prototype._selectedNodeChanged):
(WebInspector.ElementsPanel.prototype._updateSidebars):
(WebInspector.ElementsPanel.prototype.handleShortcut):
* inspector/front-end/StylesSidebarPane.js:
(WebInspector.StylePropertiesSection.prototype.onpopulate):
(WebInspector.StylePropertiesSection.prototype.addNewBlankProperty):
(WebInspector.ComputedStylePropertiesSection.prototype.onpopulate):
(WebInspector.StylePropertyTreeElement):
(WebInspector.StylePropertyTreeElement.prototype):

LayoutTests:

* http/tests/inspector/elements-test.js:
(initialize_ElementTest.InspectorTest.rangeText):
(initialize_ElementTest.InspectorTest.generateUndoTest):
* inspector/elements/undo-dom-edits-2-expected.txt: Added.
* inspector/elements/undo-dom-edits-2.html: Added.
* inspector/elements/undo-dom-edits-expected.txt: Added.
* inspector/elements/undo-dom-edits.html: Added.
* inspector/styles/undo-add-property-expected.txt: Added.
* inspector/styles/undo-add-property.html: Added.
* inspector/styles/undo-change-property-expected.txt: Added.
* inspector/styles/undo-change-property.html: Added.
* inspector/styles/undo-property-toggle-expected.txt: Added.
* inspector/styles/undo-property-toggle.html: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@106953 268f45cc-cd09-0410-ab3c-d52691b4dbfc