Remove extension application launch code from Browser

chrome/browser/ui/extensions/application_launch.cc

+// Copyright (c) 2012 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/ui/extensions/application_launch.h"
+
+#include "base/metrics/field_trial.h"
+#include "base/metrics/histogram.h"
+#include "chrome/browser/extensions/api/app/app_api.h"
+#include "chrome/browser/extensions/default_apps_trial.h"
+#include "chrome/browser/extensions/extension_prefs.h"
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/extensions/extension_tab_helper.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/browser_window.h"
+#include "chrome/browser/ui/panels/panel_manager.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/browser/web_applications/web_app.h"
+#include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_constants.h"
+#include "chrome/common/url_constants.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_view.h"
+#include "content/public/common/renderer_preferences.h"
+
+#if defined(USE_ASH)
+#include "ash/ash_switches.h"
+#include "chrome/browser/ui/views/ash/panel_view_aura.h"
+#endif
+
+using content::WebContents;
+using extensions::Extension;
+
+namespace {
+
+// Get the launch URL for a given extension, with optional override/fallback.
+// |override_url|, if non-empty, will be preferred over the extension's
+// launch url.
+GURL UrlForExtension(const Extension* extension,
+                     const GURL& override_url) {
+  if (!extension)
+    return override_url;
+
+  GURL url;
+  if (!override_url.is_empty()) {
+    DCHECK(extension->web_extent().MatchesURL(override_url));
+    url = override_url;
+  } else {
+    url = extension->GetFullLaunchURL();
+  }
+
+  // For extensions lacking launch urls, determine a reasonable fallback.
+  if (!url.is_valid()) {
+    url = extension->options_url();
+    if (!url.is_valid())
+      url = GURL(chrome::kChromeUIExtensionsURL);
+  }
+
+  return url;
+}
+
+bool AllowPanels(const std::string& app_name) {
+  return PanelManager::ShouldUsePanels(
+      web_app::GetExtensionIdFromApplicationName(app_name));
+}
+
+}  // namespace
+
+namespace application_launch {
+
+WebContents* OpenApplication(Profile* profile,
+                             const Extension* extension,
+                             extension_misc::LaunchContainer container,
+                             const GURL& override_url,
+                             WindowOpenDisposition disposition) {
+  WebContents* tab = NULL;
+  ExtensionPrefs* prefs = profile->GetExtensionService()->extension_prefs();
+  prefs->SetActiveBit(extension->id(), true);
+
+  UMA_HISTOGRAM_ENUMERATION("Extensions.AppLaunchContainer", container, 100);
+
+  if (extension->is_platform_app()) {
+    extensions::AppEventRouter::DispatchOnLaunchedEvent(profile, extension);
+    return NULL;
+  }
+
+  switch (container) {
+    case extension_misc::LAUNCH_NONE: {
+      NOTREACHED();
+      break;
+    }
+    case extension_misc::LAUNCH_PANEL:
+#if defined(USE_ASH)
+      if (extension &&
+          CommandLine::ForCurrentProcess()->HasSwitch(
+              ash::switches::kAuraPanelManager)) {
+        tab = OpenApplicationPanel(profile, extension, override_url);
+        break;
+      }
+      // else fall through to LAUNCH_WINDOW
+#endif
+    case extension_misc::LAUNCH_WINDOW:
+      tab = OpenApplicationWindow(profile, extension, container,
+                                  override_url, NULL);
+      break;
+    case extension_misc::LAUNCH_TAB: {
+      tab = OpenApplicationTab(profile, extension, override_url,
+                               disposition);
+      break;
+    }
+    default:
+      NOTREACHED();
+      break;
+  }
+  return tab;
+}
+
+#if defined(USE_ASH)
+WebContents* OpenApplicationPanel(
+    Profile* profile,
+    const Extension* extension,
+    const GURL& url_input) {
+  GURL url = UrlForExtension(extension, url_input);
+  std::string app_name =
+      web_app::GenerateApplicationNameFromExtensionId(extension->id());
+  gfx::Rect panel_bounds;
+  panel_bounds.set_width(extension->launch_width());
+  panel_bounds.set_height(extension->launch_height());
+  PanelViewAura* panel_view = new PanelViewAura(app_name);
+  panel_view->Init(profile, url, panel_bounds);
+  return panel_view->WebContents();
+}
+#endif
+
+WebContents* OpenApplicationWindow(
+    Profile* profile,
+    const Extension* extension,
+    extension_misc::LaunchContainer container,
+    const GURL& url_input,
+    Browser** app_browser) {
+  DCHECK(!url_input.is_empty() || extension);
+  GURL url = UrlForExtension(extension, url_input);
+
+  std::string app_name;
+  app_name = extension ?
+      web_app::GenerateApplicationNameFromExtensionId(extension->id()) :
+      web_app::GenerateApplicationNameFromURL(url);
+
+  Browser::Type type = Browser::TYPE_POPUP;
+  if (extension &&
+      container == extension_misc::LAUNCH_PANEL &&
+      AllowPanels(app_name)) {
+    type = Browser::TYPE_PANEL;
+  }
+
+  gfx::Rect window_bounds;
+  if (extension) {
+    window_bounds.set_width(extension->launch_width());
+    window_bounds.set_height(extension->launch_height());
+  }
+
+  Browser::CreateParams params(type, profile);
+  params.app_name = app_name;
+  params.initial_bounds = window_bounds;
+
+#if defined(USE_ASH)
+  if (extension &&
+      container == extension_misc::LAUNCH_WINDOW) {
+    // In ash, LAUNCH_FULLSCREEN launches in a maximized app window and
+    // LAUNCH_WINDOW launches in a normal app window.
+    ExtensionPrefs::LaunchType launch_type =
+        profile->GetExtensionService()->extension_prefs()->GetLaunchType(
+            extension->id(), ExtensionPrefs::LAUNCH_DEFAULT);
+    if (launch_type == ExtensionPrefs::LAUNCH_FULLSCREEN)
+      params.initial_show_state = ui::SHOW_STATE_MAXIMIZED;
+    else if (launch_type == ExtensionPrefs::LAUNCH_WINDOW)
+      params.initial_show_state = ui::SHOW_STATE_NORMAL;
+  }
+#endif
+
+  Browser* browser = Browser::CreateWithParams(params);
+
+  if (app_browser)
+    *app_browser = browser;
+
+  TabContentsWrapper* wrapper =
+      browser->AddSelectedTabWithURL(url, content::PAGE_TRANSITION_START_PAGE);
+  WebContents* contents = wrapper->web_contents();
+  contents->GetMutableRendererPrefs()->can_accept_load_drops = false;
+  contents->GetRenderViewHost()->SyncRendererPrefs();
+  // TODO(stevenjb): Find the right centralized place to do this. Currently it
+  // is only done for app tabs in normal browsers through SetExtensionAppById.
+  if (extension && type == Browser::TYPE_PANEL)
+    wrapper->extension_tab_helper()->SetExtensionAppIconById(extension->id());
+
+  browser->window()->Show();
+
+  // TODO(jcampan): http://crbug.com/8123 we should not need to set the initial
+  //                focus explicitly.
+  contents->GetView()->SetInitialFocus();
+  return contents;
+}
+
+WebContents* OpenAppShortcutWindow(Profile* profile,
+                                   const GURL& url,
+                                   bool update_shortcut) {
+  Browser* app_browser;
+  WebContents* tab = OpenApplicationWindow(
+      profile,
+      NULL,  // this is a URL app.  No extension.
+      extension_misc::LAUNCH_WINDOW,
+      url,
+      &app_browser);
+
+  if (!tab)
+    return NULL;
+
+  if (update_shortcut) {
+    // Set UPDATE_SHORTCUT as the pending web app action. This action is picked
+    // up in LoadingStateChanged to schedule a GetApplicationInfo. And when
+    // the web app info is available, ExtensionTabHelper notifies Browser via
+    // OnDidGetApplicationInfo, which calls
+    // web_app::UpdateShortcutForTabContents when it sees UPDATE_SHORTCUT as
+    // pending web app action.
+    app_browser->set_pending_web_app_action(Browser::UPDATE_SHORTCUT);
+  }
+  return tab;
+}
+
+WebContents* OpenApplicationTab(Profile* profile,
+                                const Extension* extension,
+                                const GURL& override_url,
+                                WindowOpenDisposition disposition) {
+  Browser* browser = browser::FindTabbedBrowser(profile, false);
+  WebContents* contents = NULL;
+  if (!browser) {
+    // No browser for this profile, need to open a new one.
+    browser = Browser::Create(profile);
+    browser->window()->Show();
+    // There's no current tab in this browser window, so add a new one.
+    disposition = NEW_FOREGROUND_TAB;
+  } else {
+    // For existing browser, ensure its window is activated.
+    browser->window()->Activate();
+  }
+
+  // Check the prefs for overridden mode.
+  ExtensionService* extension_service = profile->GetExtensionService();
+  DCHECK(extension_service);
+
+  ExtensionPrefs::LaunchType launch_type =
+      extension_service->extension_prefs()->GetLaunchType(
+          extension->id(), ExtensionPrefs::LAUNCH_DEFAULT);
+  UMA_HISTOGRAM_ENUMERATION("Extensions.AppTabLaunchType", launch_type, 100);
+
+  static bool default_apps_trial_exists =
+      base::FieldTrialList::TrialExists(kDefaultAppsTrialName);
+  if (default_apps_trial_exists) {
+    UMA_HISTOGRAM_ENUMERATION(
+        base::FieldTrial::MakeName("Extensions.AppTabLaunchType",
+                                   kDefaultAppsTrialName),
+        launch_type, 100);
+  }
+
+  int add_type = TabStripModel::ADD_ACTIVE;
+  if (launch_type == ExtensionPrefs::LAUNCH_PINNED)
+    add_type |= TabStripModel::ADD_PINNED;
+
+  GURL extension_url = UrlForExtension(extension, override_url);
+  // TODO(erikkay): START_PAGE doesn't seem like the right transition in all
+  // cases.
+  browser::NavigateParams params(browser, extension_url,
+                                 content::PAGE_TRANSITION_START_PAGE);
+  params.tabstrip_add_types = add_type;
+  params.disposition = disposition;
+
+  if (disposition == CURRENT_TAB) {
+    WebContents* existing_tab = browser->GetSelectedWebContents();
+    TabStripModel* model = browser->tab_strip_model();
+    int tab_index = model->GetWrapperIndex(existing_tab);
+
+    existing_tab->OpenURL(content::OpenURLParams(
+          extension_url,
+          content::Referrer(existing_tab->GetURL(),
+                            WebKit::WebReferrerPolicyDefault),
+          disposition, content::PAGE_TRANSITION_LINK, false));
+    // Reset existing_tab as OpenURL() may have clobbered it.
+    existing_tab = browser->GetSelectedWebContents();
+    if (params.tabstrip_add_types & TabStripModel::ADD_PINNED) {
+      model->SetTabPinned(tab_index, true);
+      // Pinning may have moved the tab.
+      tab_index = model->GetWrapperIndex(existing_tab);
+    }
+    if (params.tabstrip_add_types & TabStripModel::ADD_ACTIVE)
+      model->ActivateTabAt(tab_index, true);
+
+    contents = existing_tab;
+  } else {
+    browser::Navigate(&params);
+    contents = params.target_contents->web_contents();
+  }
+
+#if defined(USE_ASH)
+  // In ash, LAUNCH_FULLSCREEN launches in a maximized app window and it should
+  // not reach here.
+  DCHECK(launch_type != ExtensionPrefs::LAUNCH_FULLSCREEN);
+#else
+  // TODO(skerner):  If we are already in full screen mode, and the user
+  // set the app to open as a regular or pinned tab, what should happen?
+  // Today we open the tab, but stay in full screen mode.  Should we leave
+  // full screen mode in this case?
+  if (launch_type == ExtensionPrefs::LAUNCH_FULLSCREEN &&
+      !browser->window()->IsFullscreen()) {
+    browser->ToggleFullscreenMode();
+  }
+#endif
+
+  return contents;
+}
+
+}  // namespace application_launch