Devtools[LayoutEditor]: Rework layout-editor workflow

Source/core/inspector/InspectorDOMAgent.cpp

Index: Source/core/inspector/InspectorDOMAgent.cpp
diff --git a/Source/core/inspector/InspectorDOMAgent.cpp b/Source/core/inspector/InspectorDOMAgent.cpp
index ef5031e94b2cf942e502c76bccbd6d3f22b4b70e..d8e1eed5c2e9b8ac51b1d041d44ec2270140771e 100644
--- a/Source/core/inspector/InspectorDOMAgent.cpp
+++ b/Source/core/inspector/InspectorDOMAgent.cpp
@@ -317,6 +317,7 @@ InspectorDOMAgent::InspectorDOMAgent(InspectorPageAgent* pageAgent, InjectedScri
     , m_searchingForNode(NotSearching)
     , m_suppressAttributeModifiedEvent(false)
     , m_backendNodeIdToInspect(0)
+    , m_searchingInLayoutEditorPaused(false)
 {
 }
 
@@ -1127,7 +1128,7 @@ void InspectorDOMAgent::discardSearchResults(ErrorString*, const String& searchI
 
 bool InspectorDOMAgent::handleMousePress()
 {
-    if (m_searchingForNode == NotSearching)
+    if (m_searchingForNode == NotSearching || (m_searchingForNode == SearchingInLayoutEditor && m_searchingInLayoutEditorPaused))
         return false;
 
     if (m_hoveredNodeForInspectMode) {
@@ -1140,7 +1141,7 @@ bool InspectorDOMAgent::handleMousePress()
 
 bool InspectorDOMAgent::handleGestureEvent(LocalFrame* frame, const PlatformGestureEvent& event)
 {
-    if (m_searchingForNode == NotSearching || event.type() != PlatformEvent::GestureTap)
+    if (m_searchingForNode == NotSearching || event.type() != PlatformEvent::GestureTap || (m_searchingForNode == SearchingInLayoutEditor && m_searchingInLayoutEditorPaused))
         return false;
     Node* node = hoveredNodeForEvent(frame, event, false);
     if (node && m_inspectModeHighlightConfig) {
@@ -1153,7 +1154,7 @@ bool InspectorDOMAgent::handleGestureEvent(LocalFrame* frame, const PlatformGest
 
 bool InspectorDOMAgent::handleTouchEvent(LocalFrame* frame, const PlatformTouchEvent& event)
 {
-    if (m_searchingForNode == NotSearching)
+    if (m_searchingForNode == NotSearching || (m_searchingForNode == SearchingInLayoutEditor && m_searchingInLayoutEditorPaused))
         return false;
     Node* node = hoveredNodeForEvent(frame, event, false);
     if (node && m_inspectModeHighlightConfig) {
@@ -1182,11 +1183,16 @@ void InspectorDOMAgent::inspect(Node* inspectedNode)
     }
 
     frontend()->inspectNodeRequested(backendNodeId);
+
+    if (m_searchingForNode == SearchingInLayoutEditor) {
+        m_searchingInLayoutEditorPaused = true;
+        m_overlay->setInspectModeEnabled(false);
+    }
 }
 
 bool InspectorDOMAgent::handleMouseMove(LocalFrame* frame, const PlatformMouseEvent& event)
 {
-    if (m_searchingForNode == NotSearching)
+    if (m_searchingForNode == NotSearching || (m_searchingForNode == SearchingInLayoutEditor && m_searchingInLayoutEditorPaused))
         return false;
 
     if (!frame->view() || !frame->contentLayoutObject())
@@ -1265,11 +1271,22 @@ PassOwnPtr<InspectorHighlightConfig> InspectorDOMAgent::highlightConfigFromInspe
     return highlightConfig.release();
 }
 
-void InspectorDOMAgent::setInspectModeEnabled(ErrorString* errorString, bool enabled, const bool* inspectUAShadowDOM, const RefPtr<JSONObject>* highlightConfig)
+void InspectorDOMAgent::setInspectModeEnabled(ErrorString* errorString, bool enabled, const String* mode, const RefPtr<JSONObject>* highlightConfig)
 {
     if (enabled && !pushDocumentUponHandlelessOperation(errorString))
         return;
-    SearchMode searchMode = enabled ? (asBool(inspectUAShadowDOM) ? SearchingForUAShadow : SearchingForNormal) : NotSearching;
+    SearchMode searchMode = SearchingForNormal;
+    if (!enabled) {
+        searchMode = NotSearching;
+    } else if (!mode) {
+        searchMode = SearchingForNormal;
+    } else if (*mode == "showUAShadowDOM") {
+        searchMode = SearchingForUAShadow;
+    } else if (*mode == "showLayoutEditor") {
+        searchMode = SearchingInLayoutEditor;
+        m_searchingInLayoutEditorPaused = false;
+    }
+
     setSearchingForNode(errorString, searchMode, highlightConfig ? highlightConfig->get() : nullptr);
 }
 
@@ -2221,6 +2238,20 @@ bool InspectorDOMAgent::pushDocumentUponHandlelessOperation(ErrorString* errorSt
     return true;
 }
 
+void InspectorDOMAgent::resumeSearchingForNode(Node* startNode)
+{
+    if (m_searchingForNode != SearchingInLayoutEditor)
+        return;
+
+    m_searchingInLayoutEditorPaused = false;
+    m_overlay->setInspectModeEnabled(true);
+    if (startNode && m_inspectModeHighlightConfig) {
+        m_hoveredNodeForInspectMode = startNode;
+        m_overlay->highlightNode(startNode, 0, *m_inspectModeHighlightConfig, false);
+    }
+
+}
+
 DEFINE_TRACE(InspectorDOMAgent)
 {
     visitor->trace(m_domListener);