Stop rebuilding all elements in chrome://extensions to preserve focus on refresh

chrome/browser/resources/extensions/update_node.js

+// TODO(hcarmona): Remove this temporary file.
+
+    /**
+     * Updates an HTML element for the extension metadata given in |extension|.
+     * @param {ExtensionData} extension A dictionary of extension metadata.
+     * @param {Element} node The node that is being updated.
+     * @private
+     */
+    updateNode_: function(extension, node) {
+      node.classList.toggle('inactive-extension',
+                            !extension.enabled || extension.terminated);
+
+      var toRemove = ['policy-controlled', 'may-not-modify', 'may-not-remove'];
+      node.classList.remove.apply(node.classList, toRemove);
+      var classes = [];
+      if (extension.managedInstall) {
+        classes.push('policy-controlled', 'may-not-modify');
+      } else if (extension.dependentExtensions.length > 0) {
+        classes.push('may-not-remove', 'may-not-modify');
+      } else if (extension.recommendedInstall) {
+        classes.push('may-not-remove');
+      } else if (extension.suspiciousInstall ||
+                 extension.corruptInstall ||
+                 extension.updateRequiredByPolicy) {
+        classes.push('may-not-modify');
+      }
+      node.classList.add.apply(node.classList, classes);
+
+      node.classList.toggle('extension-highlight',
+                            node.id == this.getIdQueryParam_());
+
+      var item = node.querySelector('.extension-list-item');
+      // Prevent the image cache of extension icon by using the reloaded
+      // timestamp as a query string. The timestamp is recorded when the user
+      // clicks the 'Reload' link. http://crbug.com/159302.
+      if (extensionReloadedTimestamp[extension.id]) {
+        item.style.backgroundImage =
+            'url(' + extension.icon + '?' +
+            extensionReloadedTimestamp[extension.id] + ')';
+      } else {
+        item.style.backgroundImage = 'url(' + extension.icon + ')';
+      }
+
+      this.setTextContent_(node, '.extension-title', extension.name);
+      this.setTextContent_(node, '.extension-version', extension.version);
+      this.setTextContent_(node, '.location-text', extension.locationText);
+      this.setTextContent_(node, '.blacklist-text', extension.blacklistText);
+      this.setTextContent_(node, '.extension-description',
+                           extension.description);
+
+      // The 'Show Browser Action' button.
+      this.updateElement_(node, '.show-button', extension.enable_show_button);
+
+      // The 'allow in incognito' checkbox.
+      this.updateElement_(node, '.incognito-control',
+                          this.data_.incognitoAvailable, function(item) {
+        var incognito = item.querySelector('input');
+        incognito.disabled = !extension.incognitoCanBeEnabled;
+        incognito.checked = extension.enabledIncognito;
+      });
+
+      // Only show the butterbar once.
+      butterBarVisibility[extension.id] = butterBarVisibility[extension.id] &&
+                                          extension.enabledIncognito;
+      this.updateElement_(node, '.butter-bar',
+                          butterBarVisibility[extension.id]);
+
+      // The 'collect errors' checkbox. This should only be visible if the
+      // error console is enabled - we can detect this by the existence of the
+      // |errorCollectionEnabled| property.
+      this.updateElement_(node, '.error-collection-control',
+          extension.wantsErrorCollection, function(item) {
+        item.querySelector('input').checked = extension.errorCollectionEnabled;
+      });
+
+      // The 'allow on all urls' checkbox. This should only be visible if
+      // active script restrictions are enabled. If they are not enabled, no
+      // extensions should want all urls.
+      this.updateElement_(node, '.all-urls-control', extension.wantsAllUrls,
+                          function(item) {
+        item.querySelector('input').checked = extension.allowAllUrls;
+      });
+
+      // The 'allow file:// access' checkbox.
+      this.updateElement_(node, '.file-access-control',
+                          extension.wantsFileAccess, function(item) {
+        item.querySelector('input').checked = extension.allowFileAccess;
+      });
+
+      // The 'Options' button or link, depending on its behaviour.
+      var optionsEnabled = extension.enabled && extension.optionsUrl;
+      this.updateElement_(node, '.options-link', optionsEnabled &&
+                          extension.optionsOpenInTab);
+      this.updateElement_(node, '.options-button', optionsEnabled &&
+                          !extension.optionsOpenInTab);
+
+      // The 'View in Web Store/View Web Site' link.
+      var siteLinkEnabled = extension.homepageUrl &&
+                            !extension.enableExtensionInfoDialog;
+      this.updateElement_(node, '.site-link', siteLinkEnabled, function(item) {
+        item.href = extension.homepageUrl;
+        item.textContent = loadTimeData.getString(
+            extension.homepageProvided ? 'extensionSettingsVisitWebsite' :
+                                         'extensionSettingsVisitWebStore');
+      });
+
+      // The 'Reload' link.
+      this.updateElement_(node, '.reload-link', extension.allow_reload);
+
+      // The 'Launch' link.
+      this.updateElement_(node, '.launch-link', extension.allow_reload &&
+                          extension.is_platform_app);
+
+      // The 'Reload' terminated link.
+      var isTerminated = extension.terminated;
+      this.updateElement_(node, '.terminated-reload-link', isTerminated);
+
+      // The 'Repair' corrupted link.
+      var canRepair = !isTerminated && extension.corruptInstall &&
+                      extension.isFromStore;
+      this.updateElement_(node, '.corrupted-repair-button', canRepair);
+
+      // The 'Enabled' checkbox.
+      var isOK = !isTerminated && !canRepair;
+      this.updateElement_(node, '.enable-checkbox', isOK, function(item) {
+        var enableCheckboxDisabled = extension.managedInstall ||
+                                     extension.suspiciousInstall ||
+                                     extension.corruptInstall ||
+                                     extension.updateRequiredByPolicy ||
+                                     extension.dependentExtensions.length > 0;
+        item.querySelector('input').disabled = enableCheckboxDisabled;
+        item.querySelector('input').checked = isOK && extension.enabled;
+      });
+
+      // Button for extensions controlled by policy.
+      var controlNode = node.querySelector('.enable-controls');
+      if (extension.managedInstall &&
+          !controlNode.querySelector('.controlled-extension-indicator')) {
+        var indicator = new cr.ui.ControlledIndicator();
+        indicator.classList.add('controlled-extension-indicator');
+        indicator.setAttribute('controlled-by', 'policy');
+        indicator.setAttribute('textpolicy', extension.policyText || '');
+        controlNode.appendChild(indicator);
+      } else if (!extension.managedInstall) {
+        var indicator = controlNode.querySelector(
+            '.controlled-extension-indicator');
+        if (indicator)
+          controlNode.removeChild(indicator);
+      }
+
+      // Developer mode ////////////////////////////////////////////////////////
+
+      // First we have the id.
+      var idLabel = node.querySelector('.extension-id');
+      idLabel.textContent = ' ' + extension.id;
+
+      // Then the path, if provided by unpacked extension.
+      this.updateElement_(node, '.load-path', extension.isUnpacked, function() {
+        item.querySelector('a:nth-of-type(1)').textContent =
+            ' ' + extension.prettifiedPath;
+      });
+
+      // Then the 'managed, cannot uninstall/disable' message.
+      var isRequired = extension.managedInstall || extension.recommendedInstall;
+      this.updateElement_(node, '.managed-message', isRequired);
+
+      // Then the 'This isn't from the webstore, looks suspicious' message.
+      this.updateElement_(node, '.suspicious-install-message', !isRequired &&
+                          extension.suspiciousInstall);
+
+      // Then the 'This is a corrupt extension' message.
+      this.updateElement_(node, '.corrupt-install-message', !isRequired &&
+                          extension.corruptInstall);
+
+      // Then the 'An update required by enterprise policy' message. Note that
+      // a force-installed extension might be disabled due to being outdated
+      // as well.
+      this.updateElement_(node, '.update-required-message',
+                          extension.updateRequiredByPolicy);
+      // We would like to hide managed installed message since this
+      // extension is disabled.
+      this.updateElement_(node, '.managed-message',
+                          !extension.updateRequiredByPolicy);
+
+      // The 'following extensions depend on this extension' list.
+      var hasDependents = extension.dependentExtensions.length > 0;
+      node.classList.toggle('developer-extras', hasDependents);
+      this.updateElement_(node, '.dependent-extensions-message', hasDependents,
+                          function(item) {
+        var dependentList = item.querySelector('ul');
+        dependentList.textContent = '';
+        var dependentTemplate = $('template-collection').querySelector(
+            '.dependent-list-item');
+        extension.dependentExtensions.forEach(function(elem) {
+          var depNode = dependentTemplate.cloneNode(true);
+          depNode.querySelector('.dep-extension-title').textContent =
+              elem.name;
+          depNode.querySelector('.dep-extension-id').textContent = elem.id;
+          dependentList.appendChild(depNode);
+        });
+      });
+
+      // The active views.
+      this.updateElement_(node, '.active-views', extension.views.length > 0,
+                          function(item) {
+        var link = item.querySelector('a');
+
+        // Link needs to be an only child before the list is updated.
+        while (link.nextElementSibling)
+          item.removeChild(link.nextElementSibling);
+
+        // Link needs to be cleaned up if it was used before.
+        link.textContent = '';
+        if (link.clickHandler)
+          link.removeEventListener('click', link.clickHandler);
+
+        extension.views.forEach(function(view, i) {
+          var displayName = view.generatedBackgroundPage ?
+              loadTimeData.getString('backgroundPage') : view.path;
+          var label = displayName +
+              (view.incognito ?
+                  ' ' + loadTimeData.getString('viewIncognito') : '') +
+              (view.renderProcessId == -1 ?
+                  ' ' + loadTimeData.getString('viewInactive') : '');
+          link.textContent = label;
+          link.clickHandler = function(e) {
+            // TODO(estade): remove conversion to string?
+            chrome.send('extensionSettingsInspect', [
+              String(extension.id),
+              String(view.renderProcessId),
+              String(view.renderViewId),
+              view.incognito
+            ]);
+          };
+          link.addEventListener('click', link.clickHandler);
+
+          if (i < extension.views.length - 1) {
+            link = link.cloneNode(true);
+            item.appendChild(link);
+          }
+        });
+      });
+
+      // The extension warnings (describing runtime issues).
+      this.updateElement_(node, '.extension-warnings', extension.warnings,
+                          function(item) {
+        var warningList = item.querySelector('ul');
+        warningList.textContent = '';
+        if (extension.warnings) {
+          extension.warnings.forEach(function(warning) {
+            var li = document.createElement('li');
+            warningList.appendChild(li).innerText = warning;
+          });
+        }
+      });
+
+      // If the ErrorConsole is enabled, we should have manifest and/or runtime
+      // errors. Otherwise, we may have install warnings. We should not have
+      // both ErrorConsole errors and install warnings.
+      // Errors.
+      this.updateErrors_(node.querySelector('.manifest-errors'),
+                        extension.manifestErrors);
+      this.updateErrors_(node.querySelector('.runtime-errors'),
+                        extension.runtimeErrors);
+
+      // Install warnings.
+      this.updateElement_(node, '.install-warnings', extension.installWarnings,
+                          function(item) {
+        var installWarningList = installWarningPanel.querySelector('ul');
+        installWarningList.textContent = '';
+        if (extension.installWarnings) {
+          extension.installWarnings.forEach(function(warning) {
+            var li = document.createElement('li');
+            li.innerText = warning.message;
+            installWarningList.appendChild(li);
+          });
+        }
+      });
+
+      if (location.hash.substr(1) == extension.id) {
+        // Scroll beneath the fixed header so that the extension is not
+        // obscured.
+        var topScroll = node.offsetTop - $('page-header').offsetHeight;
+        var pad = parseInt(window.getComputedStyle(node, null).marginTop, 10);
+        if (!isNaN(pad))
+          topScroll -= pad / 2;
+        setScrollTopForDocument(document, topScroll);
+      }
+    },