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ui/views/controls/tabbed_pane/native_tabbed_pane_views.cc

Index: ui/views/controls/tabbed_pane/native_tabbed_pane_views.cc
===================================================================
--- ui/views/controls/tabbed_pane/native_tabbed_pane_views.cc	(revision 0)
+++ ui/views/controls/tabbed_pane/native_tabbed_pane_views.cc	(revision 0)
@@ -0,0 +1,348 @@
+// Copyright (c) 2011 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 "ui/views/controls/tabbed_pane/native_tabbed_pane_views.h"
+
+#include "base/logging.h"
+#include "base/stl_util.h"
+#include "ui/base/resource/resource_bundle.h"
+#include "ui/gfx/canvas_skia.h"
+#include "ui/gfx/font.h"
+#include "ui/views/controls/tabbed_pane/tabbed_pane.h"
+#include "ui/views/controls/tabbed_pane/tabbed_pane_listener.h"
+#include "ui/views/layout/fill_layout.h"
+#include "ui/views/widget/widget.h"
+
+namespace views {
+
+class TabStrip;
+
+class Tab : public View {
+ public:
+  Tab(TabStrip* tab_strip, const string16& title, View* contents)
+      : tab_strip_(tab_strip),
+        title_(title),
+        contents_(contents) {}
+  virtual ~Tab() {}
+
+  static int GetMinimumTabHeight() {
+    return gfx::Font().GetHeight() + 10;
+  }
+
+  static View* GetContents(View* tab) {
+    return static_cast<Tab*>(tab)->contents_;
+  }
+
+  // Overridden from View:
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
+    canvas->FillRect(GetTabColor(), GetLocalBounds());
+    canvas->DrawStringInt(title_, gfx::Font(), SK_ColorBLACK, GetLocalBounds());
+  }
+  virtual bool OnMousePressed(const MouseEvent& event) OVERRIDE;
+  virtual gfx::Size GetPreferredSize() OVERRIDE {
+    gfx::Size ps(gfx::Font().GetStringWidth(title_), GetMinimumTabHeight());
+    ps.Enlarge(10, 0);
+    return ps;
+  }
+
+ private:
+  SkColor GetTabColor() const;
+
+  TabStrip* tab_strip_;
+  string16 title_;
+  View* contents_;
+
+  DISALLOW_COPY_AND_ASSIGN(Tab);
+};
+
+class TabStrip : public View {
+ public:
+  explicit TabStrip(NativeTabbedPaneViews* owner)
+      : owner_(owner),
+        selected_tab_(NULL) {
+  }
+  virtual ~TabStrip() {}
+
+  void SelectTab(View* tab) {
+    if (tab == selected_tab_)
+      return;
+    if (selected_tab_)
+      selected_tab_->SchedulePaint();
+    selected_tab_ = tab;
+    selected_tab_->SchedulePaint();
+    owner_->TabSelectionChanged(tab);
+  }
+
+  bool IsTabSelected(const View* tab) const {
+    return tab == selected_tab_;
+  }
+
+  int GetSelectedIndex() const {
+    return GetIndexOf(selected_tab_);
+  }
+
+  View* selected_tab() { return selected_tab_; }
+
+  View* RemoveTabAt(int index) {
+    View* contents = Tab::GetContents(child_at(index));
+    delete child_at(index);
+    return contents;
+  }
+
+  // Overridden from View:
+  virtual gfx::Size GetPreferredSize() OVERRIDE {
+    return gfx::Size(50, Tab::GetMinimumTabHeight());
+  }
+  virtual void Layout() OVERRIDE {
+    int x = 0;
+    for (int i = 0; i < child_count(); ++i) {
+      gfx::Size ps = child_at(i)->GetPreferredSize();
+      child_at(i)->SetBounds(x, 0, ps.width(), ps.height());
+      x = child_at(i)->bounds().right();
+    }
+  }
+
+ private:
+  NativeTabbedPaneViews* owner_;
+  View* selected_tab_;
+
+  DISALLOW_COPY_AND_ASSIGN(TabStrip);
+};
+
+bool Tab::OnMousePressed(const MouseEvent& event) {
+  tab_strip_->SelectTab(this);
+  return true;
+}
+
+SkColor Tab::GetTabColor() const {
+  return tab_strip_->IsTabSelected(this) ? SK_ColorRED : SK_ColorBLUE;
+}
+
+// Custom layout manager that takes care of sizing and displaying the tab pages.
+class TabLayout : public LayoutManager {
+ public:
+  TabLayout() {}
+
+  // Switches to the tab page identified.
+  void SwitchToPage(View* host, View* page) {
+    for (int i = 0; i < host->child_count(); ++i) {
+      View* child = host->child_at(i);
+      // The child might not have been laid out yet.
+      if (child == page)
+        child->SetBoundsRect(host->GetContentsBounds());
+      child->SetVisible(child == page);
+    }
+
+    FocusManager* focus_manager = page->GetFocusManager();
+    DCHECK(focus_manager);
+    const View* focused_view = focus_manager->GetFocusedView();
+    if (focused_view && host->Contains(focused_view) &&
+        !page->Contains(focused_view))
+      focus_manager->SetFocusedView(page);
+  }
+
+ private:
+  // LayoutManager overrides:
+  virtual void Layout(View* host) OVERRIDE {
+    gfx::Rect bounds(host->GetContentsBounds());
+    for (int i = 0; i < host->child_count(); ++i) {
+      View* child = host->child_at(i);
+      // We only layout visible children, since it may be expensive.
+      if (child->IsVisible() && child->bounds() != bounds)
+        child->SetBoundsRect(bounds);
+    }
+  }
+
+  virtual gfx::Size GetPreferredSize(View* host) OVERRIDE {
+    // First, query the preferred sizes to determine a good width.
+    int width = 0;
+    for (int i = 0; i < host->child_count(); ++i) {
+      View* page = host->child_at(i);
+      width = std::max(width, page->GetPreferredSize().width());
+    }
+    // After we know the width, decide on the height.
+    return gfx::Size(width, GetPreferredHeightForWidth(host, width));
+  }
+
+  virtual int GetPreferredHeightForWidth(View* host, int width) OVERRIDE {
+    int height = 0;
+    for (int i = 0; i < host->child_count(); ++i) {
+      View* page = host->child_at(i);
+      height = std::max(height, page->GetHeightForWidth(width));
+    }
+    return height;
+  }
+
+  DISALLOW_COPY_AND_ASSIGN(TabLayout);
+};
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeTabbedPaneViews, public:
+
+NativeTabbedPaneViews::NativeTabbedPaneViews(TabbedPane* tabbed_pane)
+    : tabbed_pane_(tabbed_pane),
+      tab_layout_manager_(new TabLayout),
+      ALLOW_THIS_IN_INITIALIZER_LIST(tab_strip_(new TabStrip(this))),
+      content_window_(NULL) {
+  AddChildView(tab_strip_);
+}
+
+NativeTabbedPaneViews::~NativeTabbedPaneViews() {
+}
+
+void NativeTabbedPaneViews::TabSelectionChanged(View* selected) {
+  if (content_window_) {
+    View* content_root = content_window_->GetRootView();
+    tab_layout_manager_->SwitchToPage(content_root, Tab::GetContents(selected));
+  }
+  if (tabbed_pane_->listener())
+    tabbed_pane_->listener()->TabSelectedAt(tab_strip_->GetIndexOf(selected));
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeTabbedPaneViews, NativeTabbedPaneWrapper implementation:
+
+void NativeTabbedPaneViews::AddTab(const string16& title, View* contents) {
+  AddTabAtIndex(tab_strip_->child_count(), title, contents, true);
+}
+
+void NativeTabbedPaneViews::AddTabAtIndex(int index,
+                                          const string16& title,
+                                          View* contents,
+                                          bool select_if_first_tab) {
+  DCHECK(index <= static_cast<int>(tab_strip_->child_count()));
+  contents->set_parent_owned(false);
+  contents->SetVisible(false);
+
+  tab_strip_->AddChildViewAt(new Tab(tab_strip_, title, contents), index);
+
+  // Add native tab only if the native control is alreay created.
+  if (content_window_) {
+    View* content_root = content_window_->GetRootView();
+    content_root->AddChildView(contents);
+
+    // Switch to the newly added tab if requested;
+    if (tab_strip_->child_count() == 1 && select_if_first_tab)
+      tab_layout_manager_->SwitchToPage(content_root, contents);
+  }
+}
+
+View* NativeTabbedPaneViews::RemoveTabAtIndex(int index) {
+  DCHECK(index >= 0 && index < tab_strip_->child_count());
+
+  if (index < (tab_strip_->child_count() - 1)) {
+    // Select the next tab.
+    SelectTabAt(index + 1);
+  } else {
+    // We are the last tab, select the previous one.
+    if (index > 0) {
+      SelectTabAt(index - 1);
+    } else if (content_window_) {
+      // That was the last tab. Remove the contents.
+      content_window_->GetRootView()->RemoveAllChildViews(false);
+    }
+  }
+  return tab_strip_->RemoveTabAt(index);
+}
+
+void NativeTabbedPaneViews::SelectTabAt(int index) {
+  DCHECK((index >= 0) && (index < tab_strip_->child_count()));
+  tab_strip_->SelectTab(tab_strip_->child_at(index));
+}
+
+int NativeTabbedPaneViews::GetTabCount() {
+  return tab_strip_->child_count();
+}
+
+int NativeTabbedPaneViews::GetSelectedTabIndex() {
+  return tab_strip_->GetSelectedIndex();
+}
+
+View* NativeTabbedPaneViews::GetSelectedTab() {
+  return tab_strip_->selected_tab();
+}
+
+View* NativeTabbedPaneViews::GetView() {
+  return this;
+}
+
+void NativeTabbedPaneViews::SetFocus() {
+  // Focus the associated HWND.
+  OnFocus();
+}
+
+gfx::Size NativeTabbedPaneViews::GetPreferredSize() {
+  return gfx::Size(0, tab_strip_->GetPreferredSize().height());
+}
+
+gfx::NativeView NativeTabbedPaneViews::GetTestingHandle() const {
+  return NULL;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeTabbedPaneViews, View overrides:
+
+void NativeTabbedPaneViews::Layout() {
+  gfx::Size ps = tab_strip_->GetPreferredSize();
+  tab_strip_->SetBounds(0, 0, width(), ps.height());
+
+  gfx::Point child_origin(0, tab_strip_->bounds().bottom());
+  View::ConvertPointToWidget(this, &child_origin);
+
+  if (content_window_) {
+    content_window_->SetBounds(gfx::Rect(child_origin.x(),
+                                         child_origin.y(),
+                                         width(),
+                                         std::max(0, height() - ps.height())));
+  }
+}
+
+FocusTraversable* NativeTabbedPaneViews::GetFocusTraversable() {
+  return content_window_;
+}
+
+void NativeTabbedPaneViews::ViewHierarchyChanged(bool is_add,
+                                                 View *parent,
+                                                 View *child) {
+  if (is_add && child == this)
+    InitControl();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeTabbedPaneViews, private:
+
+void NativeTabbedPaneViews::InitControl() {
+  content_window_ = new Widget;
+  Widget::InitParams params(Widget::InitParams::TYPE_CONTROL);
+  params.parent = GetWidget()->GetNativeView();
+  content_window_->Init(params);
+  content_window_->GetRootView()->SetLayoutManager(tab_layout_manager_);
+  content_window_->GetRootView()->set_background(
+      Background::CreateSolidBackground(SK_ColorLTGRAY));
+  content_window_->SetFocusTraversableParentView(this);
+  content_window_->SetFocusTraversableParent(
+      GetWidget()->GetFocusTraversable());
+
+  // Add tabs that are already added if any.
+  if (tab_strip_->has_children())
+    InitializeTabs();
+}
+
+void NativeTabbedPaneViews::InitializeTabs() {
+  View* content_root = content_window_->GetRootView();
+  for (std::vector<View*>::const_iterator tab = tab_strip_->children_begin();
+       tab != tab_strip_->children_end(); ++tab)
+    content_root->AddChildView(Tab::GetContents(*tab));
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeTabbedPaneWrapper, public:
+
+// static
+NativeTabbedPaneWrapper* NativeTabbedPaneWrapper::CreateNativeWrapper(
+    TabbedPane* tabbed_pane) {
+  return new NativeTabbedPaneViews(tabbed_pane);
+}
+
+}  // namespace views
Property changes on: ui\views\controls\tabbed_pane\native_tabbed_pane_views.cc
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Added: svn:eol-style
   + LF