Expose the type of an AccessibilityControlInfo. (This will allow us...

chrome/browser/accessibility_events.h

 // 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.
 
 #ifndef CHROME_BROWSER_ACCESSIBILITY_EVENTS_H_
 #define CHROME_BROWSER_ACCESSIBILITY_EVENTS_H_
 #pragma once
 
 #include <string>
 
@@ skipping 13 matching lines @@
 // Abstract parent class for accessibility information about a control
 // passed to event listeners.
 class AccessibilityControlInfo {
  public:
   virtual ~AccessibilityControlInfo() { }
 
   // Serialize this class as a DictionaryValue that can be converted to
   // a JavaScript object.
   virtual void SerializeToDict(DictionaryValue *dict) const;
 
+  // Return the specific type of this control, which will be one of the
+  // string constants defined in extension_accessibility_api_constants.h.
+  virtual const char* type() const = 0;
+
   Profile* profile() const { return profile_; }
 
   const std::string& name() const { return name_; }
 
  protected:
   // The constructor can only be called by subclasses.
   AccessibilityControlInfo(Profile* profile, std::string control_name)
       : profile_(profile), name_(control_name) { }
 
   // The profile this control belongs to.
   Profile* profile_;
 
   // The name of the control, like "OK" or "Password".
   std::string name_;
 };
 
 // Accessibility information about a window passed to onWindowOpened
 // and onWindowClosed event listeners.
 class AccessibilityWindowInfo : public AccessibilityControlInfo {
  public:
   AccessibilityWindowInfo(Profile* profile, std::string window_name)
       : AccessibilityControlInfo(profile, window_name) { }
 
-  virtual void SerializeToDict(DictionaryValue *dict) const;
+  virtual const char* type() const;
 };
 
 // Accessibility information about a push button passed to onControlFocused
 // and onControlAction event listeners.
 class AccessibilityButtonInfo : public AccessibilityControlInfo {
  public:
   AccessibilityButtonInfo(Profile* profile, std::string button_name)
       : AccessibilityControlInfo(profile, button_name) { }
 
-  virtual void SerializeToDict(DictionaryValue *dict) const;
+  virtual const char* type() const;
 };
 
 // Accessibility information about a hyperlink passed to onControlFocused
 // and onControlAction event listeners.
 class AccessibilityLinkInfo : public AccessibilityControlInfo {
  public:
   AccessibilityLinkInfo(Profile* profile, std::string link_name)
       : AccessibilityControlInfo(profile, link_name) { }
 
-  virtual void SerializeToDict(DictionaryValue *dict) const;
+  virtual const char* type() const;
 };
 
 // Accessibility information about a radio button passed to onControlFocused
 // and onControlAction event listeners.
 class AccessibilityRadioButtonInfo : public AccessibilityControlInfo {
  public:
   AccessibilityRadioButtonInfo(Profile* profile,
                                std::string name,
                                bool checked,
                                int item_index,
                                int item_count)
       : AccessibilityControlInfo(profile, name),
         checked_(checked),
         item_index_(item_index),
         item_count_(item_count) {
   }
 
+  virtual const char* type() const;
+
   virtual void SerializeToDict(DictionaryValue *dict) const;
 
   void SetChecked(bool checked) { checked_ = checked; }
 
  private:
   bool checked_;
   // The 0-based index of this radio button and number of buttons in the group.
   int item_index_;
   int item_count_;
 };
 
 // Accessibility information about a checkbox passed to onControlFocused
 // and onControlAction event listeners.
 class AccessibilityCheckboxInfo : public AccessibilityControlInfo {
  public:
   AccessibilityCheckboxInfo(Profile* profile,
                             std::string name,
                             bool checked)
       : AccessibilityControlInfo(profile, name),
         checked_(checked) {
   }
 
+  virtual const char* type() const;
+
   virtual void SerializeToDict(DictionaryValue *dict) const;
 
   void SetChecked(bool checked) { checked_ = checked; }
 
  private:
   bool checked_;
 };
 
 // Accessibility information about a tab passed to onControlFocused
 // and onControlAction event listeners.
 class AccessibilityTabInfo : public AccessibilityControlInfo {
  public:
   AccessibilityTabInfo(Profile* profile,
                        std::string tab_name,
                        int tab_index,
                        int tab_count)
       : AccessibilityControlInfo(profile, tab_name),
         tab_index_(tab_index),
         tab_count_(tab_count) {
   }
 
+  virtual const char* type() const;
+
   virtual void SerializeToDict(DictionaryValue *dict) const;
 
   void SetTab(int tab_index, std::string tab_name) {
     tab_index_ = tab_index;
     name_ = tab_name;
   }
 
  private:
   // The 0-based index of this tab and number of tabs in the group.
   int tab_index_;
   int tab_count_;
 };
 
 // Accessibility information about a combo box passed to onControlFocused
 // and onControlAction event listeners.
 class AccessibilityComboBoxInfo : public AccessibilityControlInfo {
  public:
   AccessibilityComboBoxInfo(Profile* profile,
                             std::string name,
                             std::string value,
                             int item_index,
                             int item_count)
       : AccessibilityControlInfo(profile, name),
         value_(value),
         item_index_(item_index),
         item_count_(item_count) {
   }
 
+  virtual const char* type() const;
+
   virtual void SerializeToDict(DictionaryValue *dict) const;
 
   void SetValue(int item_index, std::string value) {
     item_index_ = item_index;
     value_ = value;
   }
 
  private:
   std::string value_;
   // The 0-based index of the current item and the number of total items.
@@ skipping 10 matching lines @@
   AccessibilityTextBoxInfo(Profile* profile,
                            std::string name,
                            bool password)
       : AccessibilityControlInfo(profile, name),
         value_(""),
         password_(password),
         selection_start_(0),
         selection_end_(0) {
   }
 
+  virtual const char* type() const;
+
   virtual void SerializeToDict(DictionaryValue *dict) const;
 
   void SetValue(std::string value, int selection_start, int selection_end) {
     value_ = value;
     selection_start_ = selection_start;
     selection_end_ = selection_end;
   }
 
  private:
   std::string value_;
@@ skipping 10 matching lines @@
                            std::string name,
                            std::string value,
                            int item_index,
                            int item_count)
       : AccessibilityControlInfo(profile, name),
         value_(value),
         item_index_(item_index),
         item_count_(item_count) {
   }
 
+  virtual const char* type() const;
+
   virtual void SerializeToDict(DictionaryValue *dict) const;
 
   void SetValue(int item_index, std::string value) {
     item_index_ = item_index;
     value_ = value;
   }
 
  private:
   std::string value_;
   // The 0-based index of the current item and the number of total items.
   // If the value is not one of the drop-down options, |item_index_| should
   // be -1.
   int item_index_;
   int item_count_;
 };
 
 // Accessibility information about a menu; this class is used by
 // onMenuOpened, onMenuClosed, and onControlFocused event listeners.
 class AccessibilityMenuInfo : public AccessibilityControlInfo {
  public:
   AccessibilityMenuInfo(Profile* profile, std::string menu_name)
       : AccessibilityControlInfo(profile, menu_name) { }
 
-  virtual void SerializeToDict(DictionaryValue *dict) const;
+  virtual const char* type() const;
 };
 
 // Accessibility information about a menu item; this class is used by
 // onControlFocused event listeners.
 class AccessibilityMenuItemInfo : public AccessibilityControlInfo {
  public:
   AccessibilityMenuItemInfo(Profile* profile,
                             std::string name,
                             bool has_submenu,
                             int item_index,
                             int item_count)
       : AccessibilityControlInfo(profile, name),
         has_submenu_(has_submenu),
         item_index_(item_index),
         item_count_(item_count) {
   }
 
+  virtual const char* type() const;
+
   virtual void SerializeToDict(DictionaryValue *dict) const;
 
  private:
   bool has_submenu_;
   // The 0-based index of the current item and the number of total items.
   int item_index_;
   int item_count_;
 };
 
 #endif  // CHROME_BROWSER_ACCESSIBILITY_EVENTS_H_