Win: Add listbox view.

views/controls/listbox/native_listbox_win.cc

+// Copyright (c) 2010 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 "views/controls/listbox/native_listbox_win.h"
+
+#include <commctrl.h>
+#include <windowsx.h>
+
+#include "app/l10n_util.h"
+#include "app/l10n_util_win.h"
+#include "app/resource_bundle.h"
+#include "base/logging.h"
+#include "base/utf_string_conversions.h"
+#include "base/win_util.h"
+#include "gfx/font.h"
+#include "views/controls/listbox/listbox.h"
+#include "views/widget/widget.h"
+
+namespace views {
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeListboxWin, public:
+
+NativeListboxWin::NativeListboxWin(Listbox* listbox,
+                                   const std::vector<string16>& strings,
+                                   Listbox::Listener* listener)
+    : listbox_(listbox),
+      strings_(strings),
+      listener_(listener) {
+  // Associates the actual HWND with the listbox so the listbox is the one
+  // considered as having the focus (not the wrapper) when the HWND is
+  // focused directly (with a click for example).
+  set_focus_view(listbox);
+}
+
+NativeListboxWin::~NativeListboxWin() {
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeListboxWin, NativeListboxWrapper implementation:
+
+int NativeListboxWin::GetRowCount() const {
+  if (!native_view())
+    return 0;
+  return ListBox_GetCount(native_view());
+}
+
+int NativeListboxWin::SelectedRow() const {
+  if (!native_view())
+    return -1;
+  return ListBox_GetCurSel(native_view());
+}
+
+void NativeListboxWin::SelectRow(int row) {
+  if (!native_view())
+    return;
+  ListBox_SetCurSel(native_view(), row);
+}
+
+View* NativeListboxWin::GetView() {
+  return this;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeListboxWin, View overrides:
+
+gfx::Size NativeListboxWin::GetPreferredSize() {
+  SIZE sz = {0};
+  SendMessage(native_view(), BCM_GETIDEALSIZE, 0,
+              reinterpret_cast<LPARAM>(&sz));
+
+  return gfx::Size(sz.cx, sz.cy);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeListboxWin, NativeControlWin overrides:
+
+bool NativeListboxWin::ProcessMessage(UINT message, WPARAM w_param,
+                                      LPARAM l_param, LRESULT* result) {
+  if (message == WM_COMMAND) {
+    switch (HIWORD(w_param)) {
+      case LBN_SELCHANGE:
+        if (listener_)
+          listener_->ListboxSelectionChanged(listbox_);
+        return true;
+      default:
+        break;
+    }
+  }
+
+  return NativeControlWin::ProcessMessage(message, w_param, l_param, result);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeListboxWin, protected:
+
+void NativeListboxWin::CreateNativeControl() {
+  int style = WS_CHILD | LBS_NOINTEGRALHEIGHT | LBS_NOTIFY;
+  // If there's only one column and the title string is empty, don't show a
+  // header.
+  HWND hwnd = ::CreateWindowEx(WS_EX_CLIENTEDGE | GetAdditionalRTLStyle(),
+                               WC_LISTBOX,
+                               L"",
+                               style,
+                               0, 0, width(), height(),
+                               listbox_->GetWidget()->GetNativeView(),
+                               NULL, NULL, NULL);
+  HFONT font = ResourceBundle::GetSharedInstance().
+      GetFont(ResourceBundle::BaseFont).hfont();
+  SendMessage(hwnd, WM_SETFONT, reinterpret_cast<WPARAM>(font), FALSE);
+  l10n_util::AdjustUIFontForWindow(hwnd);
+
+  for (size_t i = 0; i < strings_.size(); ++i)
+    ListBox_AddString(hwnd, UTF16ToWide(strings_[i]).c_str());
+
+  NativeControlCreated(hwnd);
+
+  // Bug 964884: detach the IME attached to this window.
+  // We should attach IMEs only when we need to input CJK strings.
+  ::ImmAssociateContextEx(hwnd, NULL, 0);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// NativeListboxWrapper, public:
+
+// static
+NativeListboxWrapper* NativeListboxWrapper::CreateNativeWrapper(
+    Listbox* listbox,
+    const std::vector<string16>& strings,
+    Listbox::Listener* listener) {
+  return new NativeListboxWin(listbox, strings, listener);
+}
+
+}  // namespace views