Add UI for the cursorToolOnLoad pref in the Chrome extension + migration logic

extensions/chromium/options/migration.js

@@ -29,6 +29,8 @@ limitations under the License.
     storageLocal.get(storageKeys, function(values) {
       if (!values || !Object.keys(values).length) {
         // No local storage - nothing to migrate.
+        // ... except possibly for a renamed preference name.
+        migrateRenamedStorage();
         return;
       }
       migrateToSyncStorage(values);
@@ -63,7 +65,34 @@ limitations under the License.
         // the migration successful.
         console.log(
             'Successfully migrated preferences from local to sync storage.');
+        migrateRenamedStorage();
       });
     });
   }
+
+  // TODO: Remove this migration code somewhere in the future, when most users
+  // have had their chance of migrating to the new preference format.
+  // Note: We cannot modify managed preferences, so the migration logic is
+  // duplicated in web/chromecom.js too.
+  function migrateRenamedStorage() {
+    storageSync.get([
+      'enableHandToolOnLoad',
+      'cursorToolOnLoad',
+    ], function(items) {
+      // Migration code for https://github.com/mozilla/pdf.js/pull/7635.
+      if (typeof items.enableHandToolOnLoad === 'boolean') {
+        if (items.enableHandToolOnLoad) {
+          storageSync.set({
+            cursorToolOnLoad: 1,
+          }, function() {
+            if (!chrome.runtime.lastError) {
+              storageSync.remove('enableHandToolOnLoad');
+            }
+          });
+        } else {
+          storageSync.remove('enableHandToolOnLoad');
+        }
+      }
+    });
+  }
 })();

extensions/chromium/options/options.html

@@ -80,6 +80,18 @@
 </div>
 </template>
 
+<template id="cursorToolOnLoad-template">
+<div class="settings-row">
+  <label>
+    <span></span>
+    <select>
+      <option value="0">Text selection tool</option>
+      <option value="1">Hand tool</option>
+    </select>
+  </label>
+</div>
+</template>
+
 <template id="externalLinkTarget-template">
 <div class="settings-row">
   <label>

extensions/chromium/options/options.js

@@ -79,6 +79,8 @@ Promise.all([
       renderPreference = renderDefaultZoomValue(prefSchema.title);
     } else if (prefName === 'sidebarViewOnLoad') {
       renderPreference = renderSidebarViewOnLoad(prefSchema.title);
+    } else if (prefName === 'cursorToolOnLoad') {
+      renderPreference = renderCursorToolOnLoad(prefSchema.title);
     } else if (prefName === 'externalLinkTarget') {
       renderPreference = renderExternalLinkTarget(prefSchema.title);
     } else {
@@ -198,6 +200,23 @@ function renderSidebarViewOnLoad(shortDescription) {
   return renderPreference;
 }
 
+function renderCursorToolOnLoad(shortDescription) {
+  var wrapper = importTemplate('cursorToolOnLoad-template');
+  var select = wrapper.querySelector('select');
+  select.onchange = function() {
+    storageArea.set({
+      cursorToolOnLoad: parseInt(this.value),
+    });
+  };
+  wrapper.querySelector('span').textContent = shortDescription;
+  document.getElementById('settings-boxes').appendChild(wrapper);
+
+  function renderPreference(value) {
+    select.value = value;
+  }
+  return renderPreference;
+}
+
 function renderExternalLinkTarget(shortDescription) {
   var wrapper = importTemplate('externalLinkTarget-template');
   var select = wrapper.querySelector('select');

extensions/chromium/preferences_schema.json

@@ -27,6 +27,7 @@
       "default": 0
     },
     "enableHandToolOnLoad": {
+      "description": "Deprecated. Set cursorToolOnLoad to 1 to enable the hand tool by default.",
       "type": "boolean",
       "default": false
     },

web/chromecom.js

@@ -328,7 +328,18 @@ class ChromePreferences extends BasePreferences {
         // Get preferences as set by the system administrator.
         // See extensions/chromium/preferences_schema.json for more information.
         // These preferences can be overridden by the user.
-        chrome.storage.managed.get(this.defaults, getPreferences);
+        chrome.storage.managed.get(this.defaults, function(items) {
+          // Migration code for https://github.com/mozilla/pdf.js/pull/7635.
+          // Never remove this, because we have no means of modifying managed
+          // preferences.
+          if (items && items.enableHandToolOnLoad && !items.cursorToolOnLoad) {
+            // if the old enableHandToolOnLoad has a non-default value,
+            // and cursorToolOnLoad has a default value, migrate.
+            items.enableHandToolOnLoad = false;
+            items.cursorToolOnLoad = 1;
+          }
+          getPreferences(items);
+        });
       } else {
         // Managed storage not supported, e.g. in old Chromium versions.
         getPreferences(this.defaults);