Print Preview: Migrate policy and preview area/generation tests to TS

Bug: 1245834
Change-Id: I7c9376d5f6388a3e7e41946aec341092e33e6cc2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3318610
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Cr-Commit-Position: refs/heads/main@{#949379}

chrome/browser/resources/print_preview/data/model.ts

@@ -93,6 +93,12 @@ export type PolicyEntry = {
   applyOnDestinationUpdate: boolean,
 };
 
+export type PolicyObjectEntry = {
+  defaultMode?: any,
+  allowedMode?: any,
+  value?: number,
+};
+
 export type PolicySettings = {
   headerFooter?: PolicyEntry,
   cssBackground?: PolicyEntry,
@@ -1189,8 +1195,7 @@ export class PrintPreviewModelElement extends PolymerElement {
     if (policies === undefined) {
       return;
     }
-    const policiesObject = policies as
-        {[key: string]: {defaultMode?: any, allowedMode?: any, value?: number}};
+    const policiesObject = policies as {[key: string]: PolicyObjectEntry};
     ['headerFooter', 'cssBackground', 'mediaSize'].forEach(settingName => {
       if (!policiesObject[settingName]) {
         return;

chrome/browser/resources/print_preview/print_preview.ts

@@ -19,7 +19,7 @@ export {PageLayoutInfo} from './data/document_info.js';
 export {LocalDestinationInfo, ProvisionalDestinationInfo} from './data/local_parsers.js';
 export {CustomMarginsOrientation, Margins, MarginsSetting, MarginsType} from './data/margins.js';
 export {MeasurementSystem, MeasurementSystemUnitType} from './data/measurement_system.js';
-export {DuplexMode, DuplexType, getInstance, PrintPreviewModelElement, PrintTicket, whenReady} from './data/model.js';
+export {DuplexMode, DuplexType, getInstance, PolicyObjectEntry, PrintPreviewModelElement, PrintTicket, SerializedSettings, whenReady} from './data/model.js';
 // <if expr="chromeos or lacros">
 export {PrintServerStore, PrintServerStoreEventType} from './data/print_server_store.js';
 // </if>
@@ -77,7 +77,7 @@ export {PagesValue, PrintPreviewPagesSettingsElement} from './ui/pages_settings.
 export {PrintPreviewPinSettingsElement} from './ui/pin_settings.js';
 // </if>
 export {PluginProxy, PluginProxyImpl, ViewportChangedCallback} from './ui/plugin_proxy.js';
-export {PreviewAreaState, PrintPreviewPreviewAreaElement} from './ui/preview_area.js';
+export {PreviewAreaState, PreviewTicket, PrintPreviewPreviewAreaElement} from './ui/preview_area.js';
 export {PrintPreviewSearchBoxElement} from './ui/print_preview_search_box.js';
 export {PrintPreviewScalingSettingsElement} from './ui/scaling_settings.js';
 export {SelectMixin} from './ui/select_mixin.js';

chrome/browser/resources/print_preview/ui/preview_area.ts

@@ -33,7 +33,7 @@ import {MARGIN_KEY_MAP, MarginObject, PrintPreviewMarginControlContainerElement}
 import {PluginProxy, PluginProxyImpl} from './plugin_proxy.js';
 import {SettingsMixin} from './settings_mixin.js';
 
-type PreviewTicket = Ticket&{
+export type PreviewTicket = Ticket&{
   headerFooterEnabled: boolean;
   pageRange: Array<{to: number, from: number}>;
   pagesPerSheet: number;
@@ -147,6 +147,10 @@ export class PrintPreviewPreviewAreaElement extends
     return this.documentReady_ && this.pluginLoadComplete_;
   }
 
+  getLastTicketForTest(): PreviewTicket|null {
+    return this.lastTicket_;
+  }
+
   previewLoaded(): boolean {
     return this.previewLoaded_;
   }
@@ -783,5 +787,11 @@ export class PrintPreviewPreviewAreaElement extends
   }
 }
 
+declare global {
+  interface HTMLElementTagNameMap {
+    'print-preview-preview-area': PrintPreviewPreviewAreaElement;
+  }
+}
+
 customElements.define(
     PrintPreviewPreviewAreaElement.is, PrintPreviewPreviewAreaElement);

chrome/test/data/webui/print_preview/BUILD.gn

@@ -21,8 +21,8 @@ preprocessed_tests = [
   "model_settings_policy_test.ts",
   "model_test.ts",
   "native_layer_stub.ts",
-  "policy_test.js",
-  "preview_generation_test.js",
+  "policy_test.ts",
+  "preview_generation_test.ts",
   "print_button_test.js",
   "print_preview_app_test.js",
   "print_preview_sidebar_test.js",
@@ -58,7 +58,7 @@ non_preprocessed_tests = [
   # "pdf_toolbar_manager_test.js",
   # "pdf_viewer_test.js",
   # "pdf_zoom_toolbar_test.js",
-  "preview_area_test.js",
+  "preview_area_test.ts",
   "scaling_settings_interactive_test.js",
   "scaling_settings_test.js",
   "select_behavior_test.js",