Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 142 insertions, 0 deletions

diff --git a/chrome/browser/controller.cc b/chrome/browser/controller.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include <algorithm>
+
+#include "chrome/browser/controller.h"
+#include "base/logging.h"
+
+CommandController::CommandController(CommandHandler* handler) :
+    handler_(handler) {
+}
+
+CommandController::~CommandController() {
+  // The button controllers are command observers hence this list
+  // must be deleted before the commands below.
+  std::vector<ButtonController*>::iterator bc_iter;
+  for (bc_iter = managed_button_controllers_.begin();
+       bc_iter != managed_button_controllers_.end();
+       ++bc_iter)
+    delete *bc_iter;
+
+  CommandMap::iterator command;
+  for (command = commands_.begin(); command != commands_.end(); ++command) {
+    DCHECK(command->second);
+    delete command->second->observers;
+    delete command->second;
+  }
+}
+
+bool CommandController::IsCommandEnabled(int id) const {
+  const CommandMap::const_iterator command(commands_.find(id));
+  if (command == commands_.end())
+    return false;
+
+  DCHECK(command->second);
+  return command->second->enabled;
+}
+
+bool CommandController::SupportsCommand(int id) const {
+  return commands_.find(id) != commands_.end();
+}
+
+bool CommandController::GetContextualLabel(int id, std::wstring* out) const {
+  return handler_->GetContextualLabel(id, out);
+}
+
+void CommandController::ExecuteCommand(int id) {
+  if (IsCommandEnabled(id))
+    handler_->ExecuteCommand(id);
+}
+
+void CommandController::UpdateCommandEnabled(int id, bool enabled) {
+  Command* command = GetCommand(id, true);
+  if (command->enabled == enabled)
+    return;  // Nothing to do.
+  command->enabled = enabled;
+  CommandObserverList* list = command->observers;
+
+  // FIXME: If Update calls RemoveCommandObserver, the iterator will be
+  //        invalidated. Darin says he's working on a new ObserverList
+  //        class that will handle this properly. For right now, don't
+  //        do that!
+  CommandObserverList::const_iterator end = list->end();
+  CommandObserverList::iterator observer = list->begin();
+  while (observer != end)
+    (*observer++)->SetEnabled(enabled);
+}
+
+Command* CommandController::GetCommand(int id, bool create) {
+  Command* command = NULL;
+  bool supported = SupportsCommand(id);
+  if (supported) {
+    command = commands_[id];
+  } else if (create) {
+    command = new Command;
+    DCHECK(command) << "Controller::GetCommand - OOM!";
+    command->observers = new CommandObserverList;
+    DCHECK(command->observers) << "Controller::GetCommand - OOM!";
+    command->enabled = false;
+    commands_[id] = command;
+  }
+  return command;
+}
+
+void CommandController::AddCommandObserver(int id, CommandObserver* observer) {
+  Command* command = GetCommand(id, true);
+  CommandObserverList* list = command->observers;
+
+  CommandObserverList::const_iterator end = list->end();
+  CommandObserverList::iterator existing =
+      find(list->begin(), list->end(), observer);
+  if (existing != end)
+    return;
+
+  list->push_back(observer);
+}
+
+void CommandController::RemoveCommandObserver(int id,
+                                              CommandObserver* observer) {
+  Command* command = GetCommand(id, false);
+  if (!command)
+    return;
+
+  CommandObserverList* list = command->observers;
+  CommandObserverList::const_iterator end = list->end();
+  CommandObserverList::iterator existing =
+      find(list->begin(), list->end(), observer);
+
+  if (existing != end)
+    list->erase(existing);
+}
+
+void CommandController::AddManagedButton(ChromeViews::Button* b, int command) {
+  ButtonController* bc = new ButtonController(b, this, command);
+  managed_button_controllers_.push_back(bc);
+}