mole expand/collapse API

chrome/browser/extensions/extension_toolstrip_api.cc

+// 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.
+
+#include "chrome/browser/extensions/extension_toolstrip_api.h"
+
+#include "chrome/browser/browser.h"
+#include "chrome/browser/extensions/extension_host.h"
+#include "chrome/browser/extensions/extension_shelf_model.h"
+
+namespace extension_toolstrip_api_functions {
+const char kExpandFunction[] = "toolstrip.expand";
+const char kCollapseFunction[] = "toolstrip.collapse";
+};  // namespace extension_toolstrip_api_functions
+
+namespace {
+// Errors.
+const char kNotAToolstripError[] = "This page is not a toolstrip.";
+const char kAlreadyExpandedError[] = "This toolstrip is already expanded.";
+const char kAlreadyCollapsedError[] = "This toolstrip is already collapsed.";
+const char kInvalidURLError[] = "Invalid URL";
+const char kBadHeightError[] = "Bad height.";
+
+// TODO(erikkay) what are good values here?
+const int kMinHeight = 50;
+const int kMaxHeight = 1000;
+};  // namespace
+
+bool ToolstripFunction::RunImpl() {
+  ExtensionHost* host = dispatcher()->GetExtensionHost();
+  if (!host) {
+    error_ = kNotAToolstripError;
+    return false;
+  }
+  Browser* browser = dispatcher()->GetBrowser();
+  if (!browser) {
+    error_ = kNotAToolstripError;
+    return false;
+  }
+  model_ = browser->extension_shelf_model();
+  if (!model_) {
+    error_ = kNotAToolstripError;
+    return false;
+  }
+  toolstrip_ = model_->ToolstripForHost(host);
+  if (toolstrip_ == model_->end()) {
+    error_ = kNotAToolstripError;
+    return false;
+  }
+  return true;
+}
+
+bool ToolstripExpandFunction::RunImpl() {
+  if (!ToolstripFunction::RunImpl())
+    return false;
+  if (toolstrip_->height != 0) {
+    error_ = kAlreadyExpandedError;
+    return false;
+  }
+
+  EXTENSION_FUNCTION_VALIDATE(args_->IsType(Value::TYPE_LIST));
+  const ListValue* args = static_cast<const ListValue*>(args_);
+  EXTENSION_FUNCTION_VALIDATE(args->GetSize() <= 2);
+
+  int height;
+  EXTENSION_FUNCTION_VALIDATE(args->GetInteger(0, &height));
+  EXTENSION_FUNCTION_VALIDATE(height >= 0);
+  if (height < kMinHeight || height > kMaxHeight) {
+    error_ = kBadHeightError;
+    return false;
+  }
+
+  GURL url;
+  if (args->GetSize() == 2) {
+    Value* url_val;
+    EXTENSION_FUNCTION_VALIDATE(args->Get(1, &url_val));
+    if (url_val->GetType() != Value::TYPE_NULL) {
+      std::string url_str;
+      EXTENSION_FUNCTION_VALIDATE(url_val->GetAsString(&url_str));
+      url = GURL(url_str);
+      if (!url.is_valid() && !url.is_empty()) {
+        error_ = kInvalidURLError;
+        return false;
+      }
+    }
+  }
+
+  model_->ExpandToolstrip(toolstrip_, url, height);
+  return true;
+}
+
+bool ToolstripCollapseFunction::RunImpl() {
+  if (!ToolstripFunction::RunImpl())
+    return false;
+
+  if (toolstrip_->height == 0) {
+    error_ = kAlreadyCollapsedError;
+    return false;
+  }
+
+  GURL url;
+  if (args_->GetType() != Value::TYPE_NULL) {
+    std::string url_str;
+    EXTENSION_FUNCTION_VALIDATE(args_->GetAsString(&url_str));
+    url = GURL(url_str);
+    if (!url.is_valid() && !url.is_empty()) {
+      error_ = kInvalidURLError;
+      return false;
+    }
+  }
+
+  model_->CollapseToolstrip(toolstrip_, url);
+  return true;
+}