[CUPS] Implement the Add Printer dialogs.

chrome/browser/resources/settings/printing_page/cups_add_printer_dialog.js

 // Copyright 2016 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.
 
 /**
  * @fileoverview 'settings-cups-add-printer-dialog' is the dialog for setting up

[michaelpg, 2016/08/29 17:10:32]

update this comment to explain the multi-dialog setup

[xdai1, 2016/08/29 18:45:45]

Done.

  * a new CUPS printer.
  */
+
+/**
+ * Different dialogs in add printer flow.
+ * @enum {string}
+ */
+var AddPrinterDialogs = {
+  DISCOVERY: 'add-printer-discovery-dialog',
+  MANUALLY: 'add-printer-maually-dialog',
+  CONFIGURING: 'add-printer-configuring-dialog',
+};
+
+Polymer({
+  is: 'add-printer-discovery-dialog',
+
+  properties: {
+    /** @type {!Array<!CupsPrinterInfo>} */
+    discoveredPrinters: {
+      type: Array,
+    },
+
+    /** @type {!CupsPrinterInfo} */
+    selectedPrinter: {
+      type: Object,
+      notify: true,
+    },
+  },
+
+  /** @override */
+  ready: function() {
+    // TODO(xdai): Get the discovered printer list after the api is ready.
+  },
+
+  switchToManualAddDialog_: function() {
+    this.$$('add-printer-dialog-template').close();
+    this.fire('open-manually-add-printer-dialog');
+  },
+
+  onCancelTap_: function() {
+    this.$$('add-printer-dialog-template').close();
+  },
+
+  switchToConfiguringDialog_: function() {
+    this.$$('add-printer-dialog-template').close();
+    this.fire('open-configuring-printer-dialog');
+  },
+});
+
+Polymer({
+  is: 'add-printer-maually-dialog',
+
+  properties: {
+    /** @type {!CupsPrinterInfo} */
+    newPrinter: {
+      type: Object,
+      notify: true,
+      value: function() {
+        return {
+         printerAddress: '',
+         printerDescription: '',
+         printerId: '',
+         printerManufacturer: '',
+         printerModel: '',
+         printerName: '',
+         printerProtocol: 'ipp',
+         printerQueue: '',
+         printerStatus: '',
+        };
+      },
+    },
+  },
+
+  switchToDiscoveryDialog_: function() {
+    this.$$('add-printer-dialog-template').close();
+    this.fire('open-discovery-printers-dialog');
+  },
+
+  onCancelTap_: function() {
+    this.$$('add-printer-dialog-template').close();
+  },
+
+  switchToConfiguringDialog_: function() {
+    this.$$('add-printer-dialog-template').close();
+    this.fire('open-configuring-printer-dialog');
+  },
+});
+
+Polymer({
+  is: 'add-printer-configuring-dialog',
+
+  properties: {
+    printerName: String,
+  },
+
+  /** @override */
+  attached: function() {
+    this.$.configuringMessage.textContent = loadTimeData.getStringF(
+        'printerConfiguringMessage', this.printerName);
+  },
+
+  /** @private */
+  onCancelConfiguringTap_: function() {
+    this.$$('add-printer-dialog-template').close();
+    this.fire('configuring-dialog-closed');
+  },
+});
+
 Polymer({
   is: 'settings-cups-add-printer-dialog',
 
-  /** Opens the Add printer dialog. */
+  properties: {
+    /** @type {!CupsPrinterInfo} */
+    selectedPrinter: {
+      type: Object,
+    },
+
+    /** @type {!CupsPrinterInfo} */
+    newPrinter: {
+      type: Object,
+    },
+
+    /** @private {string} */
+    previousDialog_: String,
+
+    /** @private {string} */
+    currentDialog_: String,
+
+    /** @private {boolean} */
+    showDiscoveryDialog_: Boolean,
+
+    /** @private {boolean} */
+    showManuallyAddDialog_: Boolean,
+
+    /** @private {boolean} */
+    showConfiguringDialog_: Boolean,
+  },
+
+  listeners: {
+    'configuring-dialog-closed': 'configuringDialogClosed_',
+    'open-manually-add-printer-dialog': 'openManuallyAddPrinterDialog_',
+    'open-configuring-printer-dialog': 'openConfiguringPrinterDialog_',
+    'open-discovery-printers-dialog': 'openDiscoveryPrintersDialog_',
+  },
+
+  /** Opens the Add printer discovery dialog. */
   open: function() {
-    this.$.dialog.showModal();
-  },
-
-  /** @private */
-  onCancelTap_: function() {
-    this.$.dialog.close();
-  },
-});
+    this.switchDialog_('', AddPrinterDialogs.DISCOVERY, 'showDiscoveryDialog_');
+  },
+
+  /** @private */
+  openManuallyAddPrinterDialog_: function() {
+    this.switchDialog_(this.currentDialog_, AddPrinterDialogs.MANUALLY,
+                       'showManuallyAddDialog_');
+  },
+
+  /** @private */
+  openDiscoveryPrintersDialog_: function() {
+    this.switchDialog_(this.currentDialog_, AddPrinterDialogs.DISCOVERY,
+                       'showDiscoveryDialog_');
+  },
+
+  /** @private */
+  openConfiguringPrinterDialog_: function() {
+    this.switchDialog_(this.currentDialog_, AddPrinterDialogs.CONFIGURING,
+                       'showConfiguringDialog_');
+  },
+
+  /** @private */
+  configuringDialogClosed_: function() {
+    if (this.previousDialog_ == AddPrinterDialogs.DISCOVERY) {
+      this.switchDialog_(
+          this.currentDialog_, this.previousDialog_, 'showDiscoveryDialog_');
+    } else if (this.previousDialog_ == AddPrinterDialogs.MANUALLY) {
+      this.switchDialog_(
+          this.currentDialog_, this.previousDialog_, 'showManuallyAddDialog_');
+    }
+  },
+
+  /**
+   * Switch dialog from |fromDialog| to |toDialog|.
+   * @param {string} fromDialog
+   * @param {string} toDialog
+   * @param {string} domIfBooleanName The name of the boolean variable
+   *     corresponding to the |toDialog|.
+   * @private
+   */
+  switchDialog_: function(fromDialog, toDialog, domIfBooleanName) {
+    this.previousDialog_ = fromDialog;
+    this.currentDialog_ = toDialog;
+
+    this.set(domIfBooleanName, true);
+    this.async(function() {
+      var dialog = this.$$(toDialog);
+      dialog.addEventListener('close', function() {
+        this.set(domIfBooleanName, false);
+      }.bind(this));
+    }.bind(this));

[michaelpg, 2016/08/29 17:10:32]

no need to .bind(this) -- this.async calls the callback with "this" as the
context by default

[xdai1, 2016/08/29 18:45:45]

Done.

+  },
+
+  /** @private */

[michaelpg, 2016/08/29 17:10:33]

document @return type

[xdai1, 2016/08/29 18:45:45]

Done.

+  getConfiguringPrinterName_: function() {
+    if (this.previousDialog_ == AddPrinterDialogs.DISCOVERY)
+      return this.selectedPrinter.printerName;
+    if (this.previousDialog_ == AddPrinterDialogs.MANUALLY)
+      return this.newPrinter.printerName;
+    return null;

[michaelpg, 2016/08/29 17:10:32]

why not ''?

[xdai1, 2016/08/29 18:45:45]

Oh you're right. Thanks!

+  },
+});