Upstream ios/web/ JS files

ios/web/web_state/js/resources/window_open_ui.js

+// Copyright 2014 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.
+
+// Scripts that are conceptually part of core.js, but have UIWebView-specific
+// details/behaviors.
+
+goog.provide('__crweb.window_open_ui');
+
+// Namespace for this module.
+__gCrWeb.windowOpen = {};
+
+// Beginning of anonymous object.
+new function() {
+  // Preserve a reference to the original window.open method.
+  __gCrWeb['originalWindowOpen'] = window.open;
+
+  // Object used to keep track of all windows opened from this window.
+  var openedWindows = {};
+
+  /**
+   * Checks if a child window exists with the given name and if so, sets its
+   * closed property to true and removes it from |openedWindows|.
+   * @param {String} windowName The name of the window to mark as closed.
+   */
+  __gCrWeb['windowClosed'] = function(windowName) {
+    if (openedWindows.hasOwnProperty(windowName)) {
+      openedWindows[windowName].closed = true;
+      delete openedWindows[windowName];
+    }
+  };
+
+  function invokeOnHost_(command) {
+    __gCrWeb.message.invokeOnHost(command);
+  };
+
+  var invokeNotImplementedOnHost_ = function(methodName) {
+    invokeOnHost_({'command': 'window.error',
+                   'message': methodName + ' is not implemented'});
+  };
+
+  // Define Object watch/unwatch functions to detect assignments to
+  // certain object properties. Handles defineProperty case only because
+  // this code runs in UIWebView (i.e. Safari).
+  var objectWatch = function(obj, prop, handler) {
+    var val = obj[prop];
+    if (delete obj[prop]) {
+      Object['defineProperty'](obj, prop, {
+        'get': function() {
+          return val;
+        },
+        'set': function(newVal) {
+          return val = handler.call(obj, prop, val, newVal);
+        }
+      });
+    }
+  };
+
+  /**
+   * Creates and returns a window proxy used to represent the window object and
+   * intercept calls made on it.
+   * @param {String} target The name of the window.
+   * @return {Object} A window proxy object for intercepting window methods.
+   * @private
+   */
+  var createWindowProxy_ = function(target) {
+    // Create return window object.
+    // 'name' is always the original supplied name.
+    var windowProxy = {name: target};
+
+    // Define window object methods.
+    windowProxy.alert = function() {
+      invokeNotImplementedOnHost_('windowProxy.alert');
+    };
+
+    windowProxy.blur = function() {
+      invokeNotImplementedOnHost_('windowProxy.blur');
+    };
+
+    windowProxy.clearInterval = function() {
+      invokeNotImplementedOnHost_('windowProxy.clearInterval');
+    };
+
+    windowProxy.clearTimeout = function() {
+      invokeNotImplementedOnHost_('windowProxy.clearTimeout');
+    };
+
+    windowProxy.close = function() {
+      invokeOnHost_({'command': 'window.close',
+                     'target': target});
+    };
+
+    windowProxy.confirm = function() {
+      invokeNotImplementedOnHost_('windowProxy.confirm');
+    };
+
+    windowProxy.createPopup = function() {
+      invokeNotImplementedOnHost_('windowProxy.createPopup');
+    };
+
+    windowProxy.focus = function() {
+      // Noop as the opened window always gets focus.
+    };
+
+    windowProxy.moveBy = function() {
+      invokeNotImplementedOnHost_('windowProxy.moveBy');
+    };
+
+    windowProxy.moveTo = function() {
+      invokeNotImplementedOnHost_('windowProxy.moveTo');
+    };
+
+    windowProxy.stop = function() {
+      invokeOnHost_({'command': 'window.stop',
+                     'target': target});
+    };
+
+    windowProxy.open = function() {
+      invokeNotImplementedOnHost_('windowProxy.open');
+    };
+
+    windowProxy.print = function() {
+      invokeNotImplementedOnHost_('windowProxy.print');
+    };
+
+    windowProxy.prompt = function() {
+      invokeNotImplementedOnHost_('windowProxy.prompt');
+    };
+
+    windowProxy.resizeBy = function() {
+      invokeNotImplementedOnHost_('windowProxy.resizeBy');
+    };
+
+    windowProxy.resizeTo = function() {
+      invokeNotImplementedOnHost_('windowProxy.resizeTo');
+    };
+
+    windowProxy.scroll = function() {
+      invokeNotImplementedOnHost_('windowProxy.scroll');
+    };
+
+    windowProxy.scrollBy = function() {
+      invokeNotImplementedOnHost_('windowProxy.scrollBy');
+    };
+
+    windowProxy.scrollTo = function() {
+      invokeNotImplementedOnHost_('windowProxy.scrollTo');
+    };
+
+    windowProxy.setInterval = function() {
+      invokeNotImplementedOnHost_('windowProxy.setInterval');
+    };
+
+    windowProxy.setTimeout = function() {
+      invokeNotImplementedOnHost_('windowProxy.setTimeout');
+    };
+
+    // Define window object properties.
+    // The current window.
+    windowProxy.self = windowProxy;
+    // The topmost browser window.
+    windowProxy.top = windowProxy;
+
+    // Provide proxy document which supplies one method, document.write().
+    windowProxy.document = {};
+    windowProxy.document.title = '';
+    windowProxy.document.write = function(html) {
+      invokeOnHost_({'command': 'window.document.write',
+                       'html': html,
+                     'target': target});
+    };
+
+    windowProxy.document.open = function() {
+      // The open() method should open an output stream to collect the output
+      // from any document.write() or document.writeln() methods.
+      invokeNotImplementedOnHost_('windowProxy.document.open');
+    };
+
+    windowProxy.document.close = function() {
+      // The close() method should close the output stream previously opened
+      // with the document.open() method, and displays the collected data in
+      // this process.
+      invokeNotImplementedOnHost_('windowProxy.document.close');
+    };
+
+    windowProxy.location = {};
+    windowProxy.location.assign = function(url) {
+      windowProxy.location = url;
+    };
+    // Watch assignments to window.location and window.location.href.
+    // Invoke equivalent method in ObjC code.
+    var onWindowProxyLocationChange = function(prop, oldVal, newVal) {
+      invokeOnHost_({'command': 'window.location',
+                     'value': __gCrWeb['getFullyQualifiedURL'](newVal),
+                     'target': target});
+      return newVal;
+    };
+    objectWatch(windowProxy, 'location', onWindowProxyLocationChange);
+    objectWatch(windowProxy.location, 'href', onWindowProxyLocationChange);
+    windowProxy.closed = false;
+
+    return windowProxy;
+  };
+
+  // Intercept window.open calls.
+  window.open = function(url, target, features) {
+    if (target == '_parent' || target == '_self' || target == '_top') {
+      return __gCrWeb['originalWindowOpen'].call(window, url, target, features);
+    }
+
+    // Because of the difficulty of returning data from JS->ObjC calls, in the
+    // event of a blank window name the JS side chooses a pseudo-GUID to
+    // use as the window name which is passed to ObjC and mapped to the real
+    // Tab there.
+    var isTargetBlank = (typeof target == 'undefined' || target == '_blank' ||
+                         target == '' || target == null);
+    if (isTargetBlank) {
+      target = '' + Date.now() + '-' + Math.random();
+    }
+
+    if (typeof(url) == 'undefined') {
+      // W3C recommended behavior.
+      url = 'about:blank';
+    }
+
+    invokeOnHost_({
+      'command': 'window.open',
+      'target': target,
+      'url': url,
+      'referrerPolicy': __gCrWeb.getPageReferrerPolicy()
+    });
+
+    // Create a new |windowProxy| if none already exists with |target| as its
+    // name.
+    var windowProxy;
+    if (openedWindows.hasOwnProperty(target)) {
+      windowProxy = openedWindows[target];
+    } else {
+      windowProxy = createWindowProxy_(target);
+      openedWindows[target] = windowProxy;
+    }
+    return windowProxy;
+  };
+
+}  // End of anonymous object