Implement a GTK LocationBarView and Autocomplete{Edit,Popup}View.

This implements some beginning functionality of "omnibox".  It uses GtkTextView for a rich text edit for the location bar.  Color emphasis, inline autocomplete, and the results popup work.  You can select one of the omnibox results using the keyboard.  Mouse selection doesn't work.  The results popup code will have to be scraped and reimplemented with cairo / pango.

BUG=8236

Review URL: http://codereview.chromium.org/40013


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@11323 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 201 insertions, 0 deletions

diff --git a/chrome/browser/autocomplete/autocomplete_edit_view_gtk.h b/chrome/browser/autocomplete/autocomplete_edit_view_gtk.h
new file mode 100644
index 0000000..85d16ae
--- /dev/null
+++ b/chrome/browser/autocomplete/autocomplete_edit_view_gtk.h
@@ -0,0 +1,201 @@
+// Copyright (c) 2009 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 CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_
+#define CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_
+
+#include <gtk/gtk.h>
+
+#include "base/basictypes.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/autocomplete/autocomplete.h"
+#include "chrome/browser/autocomplete/autocomplete_edit_view.h"
+#include "chrome/browser/toolbar_model.h"
+#include "chrome/common/page_transition_types.h"
+#include "webkit/glue/window_open_disposition.h"
+
+class AutocompleteEditController;
+class AutocompleteEditModel;
+class AutocompletePopupViewGtk;
+class CommandUpdater;
+class Profile;
+class TabContents;
+class ToolbarModel;
+
+class AutocompleteEditViewGtk : public AutocompleteEditView {
+ public:
+  AutocompleteEditViewGtk(AutocompleteEditController* controller,
+                          ToolbarModel* toolbar_model,
+                          Profile* profile,
+                          CommandUpdater* command_updater);
+  ~AutocompleteEditViewGtk();
+
+  // Initialize, create the underlying widgets, etc.
+  void Init();
+
+  GtkWidget* widget() { return text_view_; }
+
+  // Grab keyboard input focus, putting focus on the location widget.
+  void FocusLocation();
+
+  // Implement the AutocompleteEditView interface.
+  virtual AutocompleteEditModel* model() { return model_.get(); }
+  virtual const AutocompleteEditModel* model() const { return model_.get(); }
+
+  virtual void SaveStateToTab(TabContents* tab);
+
+  virtual void Update(const TabContents* tab_for_state_restoring);
+
+  virtual void OpenURL(const GURL& url,
+                       WindowOpenDisposition disposition,
+                       PageTransition::Type transition,
+                       const GURL& alternate_nav_url,
+                       size_t selected_line,
+                       const std::wstring& keyword);
+
+  virtual std::wstring GetText() const;
+
+  virtual void SetUserText(const std::wstring& text) {
+    SetUserText(text, text, true);
+  }
+  virtual void SetUserText(const std::wstring& text,
+                           const std::wstring& display_text,
+                           bool update_popup);
+
+  virtual void SetWindowTextAndCaretPos(const std::wstring& text,
+                                        size_t caret_pos);
+
+  virtual bool IsSelectAll();
+  virtual void SelectAll(bool reversed);
+  virtual void RevertAll();
+
+  virtual void UpdatePopup();
+  virtual void ClosePopup();
+
+  virtual void OnTemporaryTextMaybeChanged(const std::wstring& display_text,
+                                           bool save_original_selection);
+  virtual bool OnInlineAutocompleteTextMaybeChanged(
+      const std::wstring& display_text, size_t user_text_length);
+  virtual void OnRevertTemporaryText();
+  virtual void OnBeforePossibleChange();
+  virtual bool OnAfterPossibleChange();
+
+  // Return the position (root coordinates) of the bottom left corner and width
+  // of the location input box.  Used by the popup view to position itself.
+  void BottomLeftPosWidth(int* x, int* y, int* width);
+
+ private:
+  // Modeled like the Windows CHARRANGE.  Represent a pair of cursor position
+  // offsets.  Since GtkTextIters are invalid after the buffer is changed, we
+  // work in character offsets (not bytes).
+  struct CharRange {
+    CharRange() : cp_min(0), cp_max(0) { }
+    CharRange(int n, int x) : cp_min(n), cp_max(x) { }
+
+    // Work in integers to match the gint GTK APIs.
+    int cp_min;  // For a selection: Represents the start.
+    int cp_max;  // For a selection: Represents the end (insert position).
+  };
+
+  // TODO(deanm): Would be nice to insulate the thunkers better, etc.
+  static void HandleBeginUserActionThunk(GtkTextBuffer* unused, gpointer self) {
+    reinterpret_cast<AutocompleteEditViewGtk*>(self)->HandleBeginUserAction();
+  }
+  void HandleBeginUserAction();
+
+  static void HandleEndUserActionThunk(GtkTextBuffer* unused, gpointer self) {
+    reinterpret_cast<AutocompleteEditViewGtk*>(self)->HandleEndUserAction();
+  }
+  void HandleEndUserAction();
+
+  static void HandleViewSizeRequest(GtkWidget* view, GtkRequisition* req,
+                                    gpointer unused);
+
+  static gboolean HandleViewButtonPressThunk(GtkWidget* view,
+                                             GdkEventButton* event,
+                                             gpointer self) {
+    return reinterpret_cast<AutocompleteEditViewGtk*>(self)->
+        HandleViewButtonPress(event);
+  }
+  gboolean HandleViewButtonPress(GdkEventButton* event);
+
+  static gboolean HandleViewFocusInThunk(GtkWidget* view,
+                                          GdkEventFocus* event,
+                                          gpointer self) {
+    return reinterpret_cast<AutocompleteEditViewGtk*>(self)->
+        HandleViewFocusIn();
+  }
+  gboolean HandleViewFocusIn();
+
+  static gboolean HandleViewFocusOutThunk(GtkWidget* view,
+                                          GdkEventFocus* event,
+                                          gpointer self) {
+    return reinterpret_cast<AutocompleteEditViewGtk*>(self)->
+        HandleViewFocusOut();
+  }
+  gboolean HandleViewFocusOut();
+
+  static void HandleViewMoveCursorThunk(GtkWidget* view,
+                                        GtkMovementStep step,
+                                        gint count,
+                                        gboolean extend_selection,
+                                        gpointer self) {
+    reinterpret_cast<AutocompleteEditViewGtk*>(self)->
+        HandleViewMoveCursor(step, count, extend_selection);
+  }
+  void HandleViewMoveCursor(GtkMovementStep step,
+                            gint count,
+                            gboolean extendion_selection);
+
+  // Get the character indices of the current selection.  This honors
+  // direction, cp_max is the insertion point, and cp_min is the bound.
+  CharRange GetSelection();
+
+  // Translate from character positions to iterators for the current buffer.
+  void ItersFromCharRange(const CharRange& range,
+                          GtkTextIter* iter_min,
+                          GtkTextIter* iter_max);
+
+  // Return the number of characers in the current buffer.
+  int GetTextLength();
+
+  // Try to parse the current text as a URL and colorize the components.
+  void EmphasizeURLComponents();
+
+  // Internally invoked whenever the text changes in some way.
+  void TextChanged();
+
+  GtkWidget* text_view_;
+
+  GtkTextTagTable* tag_table_;
+  GtkTextBuffer* text_buffer_;
+
+  GtkTextTag* base_tag_;
+  GtkTextTag* secure_scheme_tag_;
+  GtkTextTag* insecure_scheme_tag_;
+
+  scoped_ptr<AutocompleteEditModel> model_;
+  scoped_ptr<AutocompletePopupViewGtk> popup_view_;
+  AutocompleteEditController* controller_;
+  ToolbarModel* toolbar_model_;
+
+  // The object that handles additional command functionality exposed on the
+  // edit, such as invoking the keyword editor.
+  CommandUpdater* command_updater_;
+
+  // When true, the location bar view is read only and also is has a slightly
+  // different presentation (font size / color). This is used for popups.
+  // TODO(deanm).
+  bool popup_window_mode_;
+
+  ToolbarModel::SecurityLevel scheme_security_level_;
+
+  // Tracking state before and after a possible change.
+  std::wstring text_before_change_;
+  CharRange sel_before_change_;
+
+  DISALLOW_COPY_AND_ASSIGN(AutocompleteEditViewGtk);
+};
+
+#endif  // CHROME_BROWSER_AUTOCOMPLETE_AUTOCOMPLETE_EDIT_VIEW_GTK_H_