Qt 5.7 | Qt WebEngine | WebEngine Quick Nano Browser | BrowserWindow.qml Example File

Qt 5.7.1 Reference Documentation

# BrowserWindow.qml Example File

webengine/quicknanobrowser/BrowserWindow.qml

      /****************************************************************************
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      import QtQuick 2.2
      import QtWebEngine 1.2
      import QtQuick.Controls 1.0
      import QtQuick.Controls.Styles 1.0
      import QtQuick.Layouts 1.0
      import QtQuick.Window 2.1
      import QtQuick.Controls.Private 1.0
      import QtQuick.Dialogs 1.2
      import Qt.labs.settings 1.0

      ApplicationWindow {
          id: browserWindow
          property QtObject applicationRoot
          property Item currentWebView: tabs.currentIndex < tabs.count ? tabs.getTab(tabs.currentIndex).item : null
          property int previousVisibility: Window.Windowed

          width: 1300
          height: 900
          visible: true
          title: currentWebView && currentWebView.title

          // Make sure the Qt.WindowFullscreenButtonHint is set on OS X.
          Component.onCompleted: flags = flags | Qt.WindowFullscreenButtonHint

          // Create a styleItem to determine the platform.
          // When using style "mac", ToolButtons are not supposed to accept focus.
          StyleItem { id: styleItem }
          property bool platformIsMac: styleItem.style == "mac"

          Settings {
              id : appSettings
              property alias autoLoadImages: loadImages.checked;
              property alias javaScriptEnabled: javaScriptEnabled.checked;
              property alias errorPageEnabled: errorPageEnabled.checked;
              property alias pluginsEnabled: pluginsEnabled.checked;
              property alias fullScreenSupportEnabled: fullScreenSupportEnabled.checked;
              property alias autoLoadIconsForPage: autoLoadIconsForPage.checked;
              property alias touchIconsEnabled: touchIconsEnabled.checked;
          }

          Action {
              shortcut: "Ctrl+D"
              onTriggered: {
                  downloadView.visible = !downloadView.visible
              }
          }
          Action {
              id: focus
              shortcut: "Ctrl+L"
              onTriggered: {
                  addressBar.forceActiveFocus();
                  addressBar.selectAll();
              }
          }
          Action {
              shortcut: StandardKey.Refresh
              onTriggered: {
                  if (currentWebView)
                      currentWebView.reload()
              }
          }
          Action {
              shortcut: StandardKey.AddTab
              onTriggered: {
                  tabs.createEmptyTab(currentWebView.profile)
                  tabs.currentIndex = tabs.count - 1
                  addressBar.forceActiveFocus();
                  addressBar.selectAll();
              }
          }
          Action {
              shortcut: StandardKey.Close
              onTriggered: {
                  currentWebView.triggerWebAction(WebEngineView.RequestClose);
              }
          }
          Action {
              shortcut: "Escape"
              onTriggered: {
                  if (currentWebView.state == "FullScreen") {
                      browserWindow.visibility = browserWindow.previousVisibility
                      fullScreenNotification.hide()
                      currentWebView.triggerWebAction(WebEngineView.ExitFullScreen);
                  }
              }
          }
          Action {
              shortcut: "Ctrl+0"
              onTriggered: currentWebView.zoomFactor = 1.0;
          }
          Action {
              shortcut: StandardKey.ZoomOut
              onTriggered: currentWebView.zoomFactor -= 0.1;
          }
          Action {
              shortcut: StandardKey.ZoomIn
              onTriggered: currentWebView.zoomFactor += 0.1;
          }

          Action {
              shortcut: StandardKey.Copy
              onTriggered: currentWebView.triggerWebAction(WebEngineView.Copy)
          }
          Action {
              shortcut: StandardKey.Cut
              onTriggered: currentWebView.triggerWebAction(WebEngineView.Cut)
          }
          Action {
              shortcut: StandardKey.Paste
              onTriggered: currentWebView.triggerWebAction(WebEngineView.Paste)
          }
          Action {
              shortcut: "Shift+"+StandardKey.Paste
              onTriggered: currentWebView.triggerWebAction(WebEngineView.PasteAndMatchStyle)
          }
          Action {
              shortcut: StandardKey.SelectAll
              onTriggered: currentWebView.triggerWebAction(WebEngineView.SelectAll)
          }
          Action {
              shortcut: StandardKey.Undo
              onTriggered: currentWebView.triggerWebAction(WebEngineView.Undo)
          }
          Action {
              shortcut: StandardKey.Redo
              onTriggered: currentWebView.triggerWebAction(WebEngineView.Redo)
          }
          Action {
              shortcut: StandardKey.Back
              onTriggered: currentWebView.triggerWebAction(WebEngineView.Back)
          }
          Action {
              shortcut: StandardKey.Forward
              onTriggered: currentWebView.triggerWebAction(WebEngineView.Forward)
          }

          toolBar: ToolBar {
              id: navigationBar
                  RowLayout {
                      anchors.fill: parent;
                      ToolButton {
                          enabled: currentWebView && (currentWebView.canGoBack || currentWebView.canGoForward)
                          menu:Menu {
                              id: historyMenu

                              Instantiator {
                                  model: currentWebView && currentWebView.navigationHistory.items
                                  MenuItem {
                                      text: model.title
                                      onTriggered: currentWebView.goBackOrForward(model.offset)
                                      checkable: !enabled
                                      checked: !enabled
                                      enabled: model.offset
                                  }

                                  onObjectAdded: historyMenu.insertItem(index, object)
                                  onObjectRemoved: historyMenu.removeItem(object)
                              }
                          }
                      }

                      ToolButton {
                          id: backButton
                          iconSource: "icons/go-previous.png"
                          onClicked: currentWebView.goBack()
                          enabled: currentWebView && currentWebView.canGoBack
                          activeFocusOnTab: !browserWindow.platformIsMac
                      }
                      ToolButton {
                          id: forwardButton
                          iconSource: "icons/go-next.png"
                          onClicked: currentWebView.goForward()
                          enabled: currentWebView && currentWebView.canGoForward
                          activeFocusOnTab: !browserWindow.platformIsMac
                      }
                      ToolButton {
                          id: reloadButton
                          iconSource: currentWebView && currentWebView.loading ? "icons/process-stop.png" : "icons/view-refresh.png"
                          onClicked: currentWebView && currentWebView.loading ? currentWebView.stop() : currentWebView.reload()
                          activeFocusOnTab: !browserWindow.platformIsMac
                      }
                      TextField {
                          id: addressBar
                          Image {
                              anchors.verticalCenter: addressBar.verticalCenter;
                              x: 5
                              z: 2
                              id: faviconImage
                              width: 16; height: 16
                              sourceSize: Qt.size(width, height)
                              source: currentWebView && currentWebView.icon
                          }
                          style: TextFieldStyle {
                              padding {
                                  left: 26;
                              }
                          }
                          focus: true
                          Layout.fillWidth: true
                          text: currentWebView && currentWebView.url
                          onAccepted: currentWebView.url = utils.fromUserInput(text)
                      }
                      ToolButton {
                          id: settingsMenuButton
                          menu: Menu {
                              MenuItem {
                                  id: loadImages
                                  text: "Autoload images"
                                  checkable: true
                                  checked: WebEngine.settings.autoLoadImages
                              }
                              MenuItem {
                                  id: javaScriptEnabled
                                  text: "JavaScript On"
                                  checkable: true
                                  checked: WebEngine.settings.javascriptEnabled
                              }
                              MenuItem {
                                  id: errorPageEnabled
                                  text: "ErrorPage On"
                                  checkable: true
                                  checked: WebEngine.settings.errorPageEnabled
                              }
                              MenuItem {
                                  id: pluginsEnabled
                                  text: "Plugins On"
                                  checkable: true
                                  checked: true
                              }
                              MenuItem {
                                  id: fullScreenSupportEnabled
                                  text: "FullScreen On"
                                  checkable: true
                                  checked: WebEngine.settings.fullScreenSupportEnabled
                              }
                              MenuItem {
                                  id: offTheRecordEnabled
                                  text: "Off The Record"
                                  checkable: true
                                  checked: currentWebView.profile.offTheRecord
                                  onToggled: currentWebView.profile = checked ? otrProfile : defaultProfile;
                              }
                              MenuItem {
                                  id: httpDiskCacheEnabled
                                  text: "HTTP Disk Cache"
                                  checkable: !currentWebView.profile.offTheRecord
                                  checked: (currentWebView.profile.httpCacheType == WebEngineProfile.DiskHttpCache)
                                  onToggled: currentWebView.profile.httpCacheType = checked ? WebEngineProfile.DiskHttpCache : WebEngineProfile.MemoryHttpCache
                              }
                              MenuItem {
                                  id: autoLoadIconsForPage
                                  text: "Icons On"
                                  checkable: true
                                  checked: WebEngine.settings.autoLoadIconsForPage
                              }
                              MenuItem {
                                  id: touchIconsEnabled
                                  text: "Touch Icons On"
                                  checkable: true
                                  checked: WebEngine.settings.touchIconsEnabled
                                  enabled: autoLoadIconsForPage.checked
                              }
                          }
                      }
                  }
                  ProgressBar {
                      id: progressBar
                      height: 3
                      anchors {
                          left: parent.left
                          top: parent.bottom
                          right: parent.right
                          leftMargin: -parent.leftMargin
                          rightMargin: -parent.rightMargin
                      }
                      style: ProgressBarStyle {
                          background: Item {}
                      }
                      z: -2;
                      minimumValue: 0
                      maximumValue: 100
                      value: (currentWebView && currentWebView.loadProgress < 100) ? currentWebView.loadProgress : 0
                  }
          }

          TabView {
              id: tabs
              function createEmptyTab(profile) {
                  var tab = addTab("", tabComponent)
                  // We must do this first to make sure that tab.active gets set so that tab.item gets instantiated immediately.
                  tab.active = true
                  tab.title = Qt.binding(function() { return tab.item.title })
                  tab.item.profile = profile
                  return tab
              }

              anchors.fill: parent
              Component.onCompleted: createEmptyTab(defaultProfile)

              Component {
                  id: tabComponent
                  WebEngineView {
                      id: webEngineView
                      focus: true

                      onLinkHovered: {
                          if (hoveredUrl == "")
                              resetStatusText.start()
                          else {
                              resetStatusText.stop()
                              statusText.text = hoveredUrl
                          }
                      }

                      states: [
                          State {
                              name: "FullScreen"
                              PropertyChanges {
                                  target: tabs
                                  frameVisible: false
                                  tabsVisible: false
                              }
                              PropertyChanges {
                                  target: navigationBar
                                  visible: false
                              }
                          }
                      ]
                      settings.autoLoadImages: appSettings.autoLoadImages
                      settings.javascriptEnabled: appSettings.javaScriptEnabled
                      settings.errorPageEnabled: appSettings.errorPageEnabled
                      settings.pluginsEnabled: appSettings.pluginsEnabled
                      settings.fullScreenSupportEnabled: appSettings.fullScreenSupportEnabled
                      settings.autoLoadIconsForPage: appSettings.autoLoadIconsForPage
                      settings.touchIconsEnabled: appSettings.touchIconsEnabled

                      onCertificateError: {
                          error.defer()
                          sslDialog.enqueue(error)
                      }

                      onNewViewRequested: {
                          if (!request.userInitiated)
                              print("Warning: Blocked a popup window.")
                          else if (request.destination == WebEngineView.NewViewInTab) {
                              var tab = tabs.createEmptyTab(currentWebView.profile)
                              tabs.currentIndex = tabs.count - 1
                              request.openIn(tab.item)
                          } else if (request.destination == WebEngineView.NewViewInBackgroundTab) {
                              var tab = tabs.createEmptyTab(currentWebView.profile)
                              request.openIn(tab.item)
                          } else if (request.destination == WebEngineView.NewViewInDialog) {
                              var dialog = applicationRoot.createDialog(currentWebView.profile)
                              request.openIn(dialog.currentWebView)
                          } else {
                              var window = applicationRoot.createWindow(currentWebView.profile)
                              request.openIn(window.currentWebView)
                          }
                      }

                      onFullScreenRequested: {
                          if (request.toggleOn) {
                              webEngineView.state = "FullScreen"
                              browserWindow.previousVisibility = browserWindow.visibility
                              browserWindow.showFullScreen()
                              fullScreenNotification.show()
                          } else {
                              webEngineView.state = ""
                              browserWindow.visibility = browserWindow.previousVisibility
                              fullScreenNotification.hide()
                          }
                          request.accept()
                      }

                      onRenderProcessTerminated: {
                          var status = ""
                          switch (terminationStatus) {
                          case WebEngineView.NormalTerminationStatus:
                              status = "(normal exit)"
                              break;
                          case WebEngineView.AbnormalTerminationStatus:
                              status = "(abnormal exit)"
                              break;
                          case WebEngineView.CrashedTerminationStatus:
                              status = "(crashed)"
                              break;
                          case WebEngineView.KilledTerminationStatus:
                              status = "(killed)"
                              break;
                          }

                          print("Render process exited with code " + exitCode + " " + status)
                          reloadTimer.running = true
                      }

                      onWindowCloseRequested: {
                          if (tabs.count == 1)
                              browserWindow.close()
                          else
                              tabs.removeTab(tabs.currentIndex)
                      }

                      Timer {
                          id: reloadTimer
                          interval: 0
                          running: false
                          repeat: false
                          onTriggered: currentWebView.reload()
                      }
                  }
              }
          }
          MessageDialog {
              id: sslDialog

              property var certErrors: []
              icon: StandardIcon.Warning
              standardButtons: StandardButton.No | StandardButton.Yes
              title: "Server's certificate not trusted"
              text: "Do you wish to continue?"
              detailedText: "If you wish so, you may continue with an unverified certificate. " +
                            "Accepting an unverified certificate means " +
                            "you may not be connected with the host you tried to connect to.\n" +
                            "Do you wish to override the security check and continue?"
              onYes: {
                  certErrors.shift().ignoreCertificateError()
                  presentError()
              }
              onNo: reject()
              onRejected: reject()

              function reject(){
                  certErrors.shift().rejectCertificate()
                  presentError()
              }
              function enqueue(error){
                  certErrors.push(error)
                  presentError()
              }
              function presentError(){
                  visible = certErrors.length > 0
              }
          }

          FullScreenNotification {
              id: fullScreenNotification
          }

          DownloadView {
              id: downloadView
              visible: false
              anchors.fill: parent
          }

          function onDownloadRequested(download) {
              downloadView.visible = true
              downloadView.append(download)
              download.accept()
          }

          Rectangle {
              id: statusBubble
              color: "oldlace"
              property int padding: 8

              anchors.left: parent.left
              anchors.bottom: parent.bottom
              width: statusText.paintedWidth + padding
              height: statusText.paintedHeight + padding

              Text {
                  id: statusText
                  anchors.centerIn: statusBubble
                  elide: Qt.ElideMiddle

                  Timer {
                      id: resetStatusText
                      interval: 750
                      onTriggered: statusText.text = ""
                  }
              }
          }
      }