Ash devtools: Add support for changing visibility.

ash/common/devtools/ash_devtools_css_agent.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/common/devtools/ash_devtools_css_agent.h"
 
 #include "ash/common/wm_lookup.h"
 #include "ash/common/wm_window.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 
 namespace ash {
 namespace devtools {
 
 namespace {
 using namespace ui::devtools::protocol;
 
 const char kHeight[] = "height";
 const char kWidth[] = "width";
 const char kX[] = "x";
 const char kY[] = "y";
+const char kVisibility[] = "visibility";
 
 std::unique_ptr<CSS::SourceRange> BuildDefaultSourceRange() {
   // These tell the frontend where in the stylesheet a certain style
   // is located. Since we don't have stylesheets, this is all 0.
   // We need this because CSS fields are not editable unless
   // the range is provided.
   return CSS::SourceRange::create()
       .setStartLine(0)
       .setEndLine(0)
       .setStartColumn(0)
       .setEndColumn(0)
       .build();
 }
 
 std::unique_ptr<CSS::CSSProperty> BuildCSSProperty(const std::string& name,
                                                    int value) {
   return CSS::CSSProperty::create()
       .setRange(BuildDefaultSourceRange())
       .setName(name)
       .setValue(base::IntToString(value))
       .build();
 }
 
-std::unique_ptr<Array<CSS::CSSProperty>> BuildBoundsCSSPropertyArray(
-    const gfx::Rect& bounds) {
+std::unique_ptr<Array<CSS::CSSProperty>> BuildCSSPropertyArray(
+    const gfx::Rect& bounds,
+    const bool& visible) {

[varkha, 2017/03/08 15:23:59]

Here and below. No need to pass simple types by reference.

[thanhph, 2017/03/09 16:30:58]

Done.

   auto cssProperties = Array<CSS::CSSProperty>::create();
   cssProperties->addItem(BuildCSSProperty(kHeight, bounds.height()));
   cssProperties->addItem(BuildCSSProperty(kWidth, bounds.width()));
   cssProperties->addItem(BuildCSSProperty(kX, bounds.x()));
   cssProperties->addItem(BuildCSSProperty(kY, bounds.y()));
+  cssProperties->addItem(BuildCSSProperty(kVisibility, visible));
   return cssProperties;
 }
 
 std::unique_ptr<CSS::CSSStyle> BuildCSSStyle(int node_id,
-                                             const gfx::Rect& bounds) {
+                                             const gfx::Rect& bounds,
+                                             const bool& visible) {
   return CSS::CSSStyle::create()
       .setRange(BuildDefaultSourceRange())
       .setStyleSheetId(base::IntToString(node_id))
-      .setCssProperties(BuildBoundsCSSPropertyArray(bounds))
+      .setCssProperties(BuildCSSPropertyArray(bounds, visible))
       .setShorthandEntries(Array<std::string>::create())
       .build();
 }
 
-Response ParseBounds(const std::string& style_text, gfx::Rect& bounds) {
-  std::vector<std::string> tokens = base::SplitString(
-      style_text, ":;", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
-  for (size_t i = 0; i < tokens.size() - 1; i += 2) {
-    const std::string& property = tokens.at(i);
-    int value;
-    if (!base::StringToInt(tokens.at(i + 1), &value))
-      return Response::Error("Unable to parse value for property=" + property);
-
-    if (property == kHeight)
-      bounds.set_height(std::max(0, value));
-    else if (property == kWidth)
-      bounds.set_width(std::max(0, value));
-    else if (property == kX)
-      bounds.set_x(value);
-    else if (property == kY)
-      bounds.set_y(value);
-    else
-      return Response::Error("Unsupported property=" + property);
-  }
-  return Response::OK();
-}
-
 }  // namespace
 
 AshDevToolsCSSAgent::AshDevToolsCSSAgent(AshDevToolsDOMAgent* dom_agent)
     : dom_agent_(dom_agent) {
   DCHECK(dom_agent_);
 }
 
 AshDevToolsCSSAgent::~AshDevToolsCSSAgent() {
   disable();
 }
 
 ui::devtools::protocol::Response AshDevToolsCSSAgent::enable() {
   dom_agent_->AddObserver(this);
   return ui::devtools::protocol::Response::OK();
 }
 
 ui::devtools::protocol::Response AshDevToolsCSSAgent::disable() {
   dom_agent_->RemoveObserver(this);
   return ui::devtools::protocol::Response::OK();
 }
 
 ui::devtools::protocol::Response AshDevToolsCSSAgent::getMatchedStylesForNode(
     int node_id,
     ui::devtools::protocol::Maybe<ui::devtools::protocol::CSS::CSSStyle>*
         inline_style) {
   *inline_style = GetStylesForNode(node_id);
   if (!inline_style) {
     return ui::devtools::protocol::Response::Error(
-        "Node with that id not found");
+        "No node id " + std::to_string(node_id) + " found");

[varkha, 2017/03/08 15:23:59]

Maybe format as "Node with id=<node_id> not found" (here and below). Also this
could be a utility method to avoid duplication.

[sadrul, 2017/03/08 15:38:59]

+1 re utility method to generate the error message.

[thanhph, 2017/03/09 16:30:58]

Done, thanks! A helper function is added in anon namespace.

ui::devtools::protocol::Response NodeNotFoundError(int node_id) {               
  return ui::devtools::protocol::Response::Error(                               
       "Node with id=" + std::to_string(node_id) + " not found");               

}     

   }
   return ui::devtools::protocol::Response::OK();
 }
 
 ui::devtools::protocol::Response AshDevToolsCSSAgent::setStyleTexts(
     std::unique_ptr<ui::devtools::protocol::Array<
         ui::devtools::protocol::CSS::StyleDeclarationEdit>> edits,
     std::unique_ptr<
         ui::devtools::protocol::Array<ui::devtools::protocol::CSS::CSSStyle>>*
         result) {
   std::unique_ptr<
       ui::devtools::protocol::Array<ui::devtools::protocol::CSS::CSSStyle>>
       updated_styles = ui::devtools::protocol::Array<
           ui::devtools::protocol::CSS::CSSStyle>::create();
   for (size_t i = 0; i < edits->length(); i++) {
     auto* edit = edits->get(i);
     int node_id;
     if (!base::StringToInt(edit->getStyleSheetId(), &node_id))
       return ui::devtools::protocol::Response::Error("Invalid node id");
 
     gfx::Rect updated_bounds;
-    if (!GetBoundsForNodeId(node_id, &updated_bounds)) {
+    bool visible;
+    if (!GetNodeIdProperties(node_id, &updated_bounds, &visible)) {
       return ui::devtools::protocol::Response::Error(
-          "No node found with that id");
+          "No node id " + std::to_string(node_id) + " found");
     }
-
     ui::devtools::protocol::Response response(
-        ParseBounds(edit->getText(), updated_bounds));
+        ParseProperties(edit->getText(), &updated_bounds, &visible));
     if (!response.isSuccess())
       return response;
 
-    updated_styles->addItem(BuildCSSStyle(node_id, updated_bounds));
-    if (!UpdateBounds(node_id, updated_bounds)) {
+    updated_styles->addItem(BuildCSSStyle(node_id, updated_bounds, visible));
+
+    if (!UpdateObjectProperties(node_id, updated_bounds, visible)) {
       return ui::devtools::protocol::Response::Error(
-          "No node found with that id");
+          "No node id " + std::to_string(node_id) + " found");
     }
   }
-
   *result = std::move(updated_styles);
   return ui::devtools::protocol::Response::OK();
 }
 
 void AshDevToolsCSSAgent::OnWindowBoundsChanged(WmWindow* window) {
   InvalidateStyleSheet(dom_agent_->GetNodeIdFromWindow(window));
 }
 
 void AshDevToolsCSSAgent::OnWidgetBoundsChanged(views::Widget* widget) {
   InvalidateStyleSheet(dom_agent_->GetNodeIdFromWidget(widget));
 }
 
 void AshDevToolsCSSAgent::OnViewBoundsChanged(views::View* view) {
   InvalidateStyleSheet(dom_agent_->GetNodeIdFromView(view));
 }
 
 std::unique_ptr<ui::devtools::protocol::CSS::CSSStyle>
 AshDevToolsCSSAgent::GetStylesForNode(int node_id) {
   gfx::Rect bounds;
-  return GetBoundsForNodeId(node_id, &bounds) ? BuildCSSStyle(node_id, bounds)
-                                              : nullptr;
+  bool visible;
+  return GetNodeIdProperties(node_id, &bounds, &visible)
+             ? BuildCSSStyle(node_id, bounds, visible)
+             : nullptr;
 }
 
 void AshDevToolsCSSAgent::InvalidateStyleSheet(int node_id) {
   // The stylesheetId for each node is equivalent to its node_id (as a string).
   frontend()->styleSheetChanged(base::IntToString(node_id));
 }
 
-bool AshDevToolsCSSAgent::GetBoundsForNodeId(int node_id, gfx::Rect* bounds) {
+bool AshDevToolsCSSAgent::GetNodeIdProperties(int node_id,
+                                              gfx::Rect* bounds,
+                                              bool* visible) {
   WmWindow* window = dom_agent_->GetWindowFromNodeId(node_id);
   if (window) {
     *bounds = window->GetBounds();
+    *visible = window->IsVisible();
     return true;
   }
-
   views::Widget* widget = dom_agent_->GetWidgetFromNodeId(node_id);
   if (widget) {
     *bounds = widget->GetRestoredBounds();
+    *visible = widget->IsVisible();
     return true;
   }
-
   views::View* view = dom_agent_->GetViewFromNodeId(node_id);
   if (view) {
     *bounds = view->bounds();
+    *visible = view->visible();
     return true;
   }
-
   return false;
 }
 
-bool AshDevToolsCSSAgent::UpdateBounds(int node_id, const gfx::Rect& bounds) {
+bool AshDevToolsCSSAgent::UpdateObjectProperties(int node_id,
+                                                 const gfx::Rect& bounds,
+                                                 const bool& visible) {
   WmWindow* window = dom_agent_->GetWindowFromNodeId(node_id);
   if (window) {
     window->SetBounds(bounds);
+    if (visible != window->IsVisible()) {
+      if (visible)
+        window->Show();
+      else
+        window->Hide();
+    }
     return true;
   }
-
   views::Widget* widget = dom_agent_->GetWidgetFromNodeId(node_id);
   if (widget) {
     widget->SetBounds(bounds);
+    if (visible != widget->IsVisible()) {
+      if (visible)
+        widget->Show();
+      else
+        widget->Hide();
+    }
     return true;
   }
-
   views::View* view = dom_agent_->GetViewFromNodeId(node_id);
   if (view) {
     view->SetBoundsRect(bounds);
+    if (visible != view->visible())
+      view->SetVisible(visible);
     return true;
   }
+  return false;
+}
 
-  return false;
+Response AshDevToolsCSSAgent::ParseProperties(const std::string& style_text,
+                                              gfx::Rect* bounds,
+                                              bool* visible) {
+  std::vector<std::string> tokens = base::SplitString(
+      style_text, ":;", base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
+  for (size_t i = 0; i < tokens.size() - 1; i += 2) {
+    const std::string& property = tokens.at(i);
+    int value;
+    if (!base::StringToInt(tokens.at(i + 1), &value))
+      return Response::Error("Unable to parse value for property=" + property);
+
+    if (property == kHeight)
+      bounds->set_height(std::max(0, value));
+    else if (property == kWidth)
+      bounds->set_width(std::max(0, value));
+    else if (property == kX)
+      bounds->set_x(value);
+    else if (property == kY)
+      bounds->set_y(value);
+    else if (property == kVisibility)
+      *visible = std::max(0, value) == 1;
+    else
+      return Response::Error("Unsupported property=" + property);
+  }
+  return Response::OK();
 }
 
 }  // namespace devtools
 }  // namespace ash