Move src/chrome/views to src/views. RS=darin http://crbug.com/11387

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15604 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 132 insertions, 0 deletions

diff --git a/views/controls/native_control.h b/views/controls/native_control.h
new file mode 100644
index 0000000..0573168
--- /dev/null
+++ b/views/controls/native_control.h
@@ -0,0 +1,132 @@
+// Copyright (c) 2006-2008 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.
+
+#ifndef VIEWS_CONTROLS_NATIVE_CONTROL_H_
+#define VIEWS_CONTROLS_NATIVE_CONTROL_H_
+
+#include <windows.h>
+
+#include "views/view.h"
+
+namespace views {
+
+class HWNDView;
+class NativeControlContainer;
+
+////////////////////////////////////////////////////////////////////////////////
+//
+// NativeControl is an abstract view that is used to implement views wrapping
+// native controls. Subclasses can simply implement CreateNativeControl() to
+// wrap a new kind of control
+//
+////////////////////////////////////////////////////////////////////////////////
+class NativeControl : public View {
+ public:
+   enum Alignment {
+     LEADING = 0,
+     CENTER,
+     TRAILING };
+
+  NativeControl();
+  virtual ~NativeControl();
+
+  virtual void ViewHierarchyChanged(bool is_add, View *parent, View *child);
+  virtual void Layout();
+
+  // Overridden to properly set the native control state.
+  virtual void SetVisible(bool f);
+  virtual void SetEnabled(bool enabled);
+
+  // Overridden to do nothing.
+  virtual void Paint(ChromeCanvas* canvas);
+ protected:
+  friend class NativeControlContainer;
+
+  // Overridden by sub-classes to create the windows control which is wrapped
+  virtual HWND CreateNativeControl(HWND parent_container) = 0;
+
+  // Invoked when the native control sends a WM_NOTIFY message to its parent
+  virtual LRESULT OnNotify(int w_param, LPNMHDR l_param) = 0;
+
+  // Invoked when the native control sends a WM_COMMAND message to its parent
+  virtual LRESULT OnCommand(UINT code, int id, HWND source) { return 0; }
+
+  // Invoked when the appropriate gesture for a context menu is issued.
+  virtual void OnContextMenu(const CPoint& location);
+
+  // Overridden so to set the native focus to the native control.
+  virtual void Focus();
+
+  // Invoked when the native control sends a WM_DESTORY message to its parent.
+  virtual void OnDestroy() { }
+
+  // Return the native control
+  virtual HWND GetNativeControlHWND();
+
+  // Invoked by the native windows control when it has been destroyed. This is
+  // invoked AFTER WM_DESTORY has been sent. Any window commands send to the
+  // HWND will most likely fail.
+  void NativeControlDestroyed();
+
+  // Overridden so that the control properly reflects parent's visibility.
+  virtual void VisibilityChanged(View* starting_from, bool is_visible);
+
+  // Controls that have fixed sizes should call these methods to specify the
+  // actual size and how they should be aligned within their parent.
+  void SetFixedWidth(int width, Alignment alignment);
+  void SetFixedHeight(int height, Alignment alignment);
+
+  // Derived classes interested in receiving key down notification should
+  // override this method and return true.  In which case OnKeyDown is called
+  // when a key down message is sent to the control.
+  // Note that this method is called at the time of the control creation: the
+  // behavior will not change if the returned value changes after the control
+  // has been created.
+  virtual bool NotifyOnKeyDown() const { return false; }
+
+  // Invoked when a key is pressed on the control (if NotifyOnKeyDown returns
+  // true).  Should return true if the key message was processed, false
+  // otherwise.
+  virtual bool OnKeyDown(int virtual_key_code) { return false; }
+
+  // Returns additional extended style flags. When subclasses call
+  // CreateWindowEx in order to create the underlying control, they must OR the
+  // ExStyle parameter with the value returned by this function.
+  //
+  // We currently use this method in order to add flags such as WS_EX_LAYOUTRTL
+  // to the HWND for views with right-to-left UI layout.
+  DWORD GetAdditionalExStyle() const;
+
+  // TODO(xji): we use the following temporary function as we transition the
+  // various native controls to use the right set of RTL flags. This function
+  // will go away (and be replaced by GetAdditionalExStyle()) once all the
+  // controls are properly transitioned.
+  DWORD GetAdditionalRTLStyle() const;
+
+  // This variable is protected to provide subclassers direct access. However
+  // subclassers should always check for NULL since this variable is only
+  // initialized in ValidateNativeControl().
+  HWNDView* hwnd_view_;
+
+  // Fixed size information.  -1 for a size means no fixed size.
+  int fixed_width_;
+  Alignment horizontal_alignment_;
+  int fixed_height_;
+  Alignment vertical_alignment_;
+
+ private:
+
+  void ValidateNativeControl();
+
+  static LRESULT CALLBACK NativeControlWndProc(HWND window, UINT message,
+                                               WPARAM w_param, LPARAM l_param);
+
+  NativeControlContainer* container_;
+
+  DISALLOW_COPY_AND_ASSIGN(NativeControl);
+};
+
+}  // namespace views
+
+#endif  // VIEWS_CONTROLS_NATIVE_CONTROL_H_