Add QML download API

This patch exposes downloadStarted and downloadFinished
signals on the WebEngineProfile to notify about downloads.
The WebEngineDownloadItem exposes a subset of Chromium's
content::DownloadItem functionality.
For now we expose minimal requirements to be able to control
downloads in QML but this can be extended in the future.
This patch also adds a DownloadView to quicktestbrowser
to demonstrate the usage of the new API.

[ChangeLog][QtWebEngineQML] Add QtQuick download API

Change-Id: I8d8f0daf02c4e0151000427fc2a4b37d28b9db52
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

4 files changed, 189 insertions, 5 deletions

diff --git a/tests/quicktestbrowser/DownloadView.qml b/tests/quicktestbrowser/DownloadView.qml
new file mode 100644
index 000000000..da24c0142
--- /dev/null
+++ b/tests/quicktestbrowser/DownloadView.qml
@@ -0,0 +1,165 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+**     of its contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+import QtQuick 2.1
+import QtQuick.Controls 1.0
+import QtQuick.Controls.Styles 1.0
+import QtWebEngine 1.0
+import QtWebEngine.experimental 1.1
+import QtQuick.Layouts 1.0
+
+Rectangle {
+    id: downloadView
+    color: "lightgray"
+
+    ListModel {
+        id: downloadModel
+        property var downloads: []
+    }
+
+    function append(download) {
+        downloadModel.append(download)
+        downloadModel.downloads.push(download)
+    }
+
+    Component {
+        id: downloadItemDelegate
+
+        Rectangle {
+            width: listView.width
+            height: childrenRect.height
+            anchors.margins: 10
+            radius: 3
+            color: "transparent"
+            border.color: "black"
+            Rectangle {
+                id: progressBar
+
+                property int progress: downloadModel.downloads[index] ? downloadModel.downloads[index].progress : 0
+
+                radius: 3
+                color: width == listView.width ? "green" : "#2b74c7"
+                width: listView.width / 100 * progress
+                height: cancelButton.height
+
+                Behavior on width {
+                    SmoothedAnimation { duration: 100 }
+                }
+            }
+            Rectangle {
+                anchors {
+                    left: parent.left
+                    right: parent.right
+                    leftMargin: 20
+                }
+                Label {
+                    id: label
+                    text: path
+                    anchors {
+                        verticalCenter: cancelButton.verticalCenter
+                        left: parent.left
+                        right: cancelButton.left
+                    }
+                }
+                Button {
+                    id: cancelButton
+                    anchors.right: parent.right
+                    iconSource: "icons/process-stop.png"
+                    onClicked: {
+                        var download = downloadModel.downloads[index]
+
+                        download.cancel()
+
+                        downloadModel.downloads = downloadModel.downloads.filter(function (el) {
+                            return el.id !== download.id;
+                        });
+                        downloadModel.remove(index)
+                    }
+                }
+            }
+        }
+
+    }
+    ListView {
+        id: listView
+        anchors {
+            topMargin: 10
+            top: parent.top
+            bottom: parent.bottom
+            horizontalCenter: parent.horizontalCenter
+        }
+        width: parent.width - 20
+        spacing: 5
+
+        model: downloadModel
+        delegate: downloadItemDelegate
+
+        Text {
+            visible: !listView.count
+            horizontalAlignment: Text.AlignHCenter
+            height: 30
+            anchors {
+                top: parent.top
+                left: parent.left
+                right: parent.right
+            }
+            font.pixelSize: 20
+            text: "No active downloads."
+        }
+
+        Rectangle {
+            color: "gray"
+            anchors {
+                bottom: parent.bottom
+                left: parent.left
+                right: parent.right
+            }
+            height: 30
+            Button {
+                id: okButton
+                text: "OK"
+                anchors.centerIn: parent
+                onClicked: {
+                    downloadView.visible = false
+                }
+            }
+        }
+    }
+}
diff --git a/tests/quicktestbrowser/quicktestbrowser.pro b/tests/quicktestbrowser/quicktestbrowser.pro
index ac8fe74b3..1da197590 100644
--- a/tests/quicktestbrowser/quicktestbrowser.pro
+++ b/tests/quicktestbrowser/quicktestbrowser.pro
@@ -10,6 +10,7 @@ SOURCES = quickwindow.cpp \
 
 OTHER_FILES += ButtonWithMenu.qml \
                ContextMenuExtras.qml \
+               DownloadView.qml \
                FeaturePermissionBar.qml \
                quickwindow.qml
 
diff --git a/tests/quicktestbrowser/quickwindow.qml b/tests/quicktestbrowser/quickwindow.qml
index 7bc9dd289..92bd048d4 100644
--- a/tests/quicktestbrowser/quickwindow.qml
+++ b/tests/quicktestbrowser/quickwindow.qml
@@ -40,7 +40,7 @@
 
 import QtQuick 2.1
 import QtWebEngine 1.1
-import QtWebEngine.experimental 1.0
+import QtWebEngine.experimental 1.1
 
 import QtQuick.Controls 1.0
 import QtQuick.Controls.Styles 1.0
@@ -74,14 +74,18 @@ ApplicationWindow {
     }
 
     WebEngineProfile {
-        id: testProfile;
-        storageName: "Test";
+        id: testProfile
+        storageName: "Test"
         httpCacheType: httpDiskCacheEnabled.checked ? WebEngineProfile.DiskHttpCache : WebEngineProfile.MemoryHttpCache;
+        onDownloadStarted: {
+            downloadView.visible = true
+            downloadView.append(download)
+        }
     }
 
     WebEngineProfile {
-        id: otrProfile;
-        offTheRecord: true;
+        id: otrProfile
+        offTheRecord: true
     }
 
     // Make sure the Qt.WindowFullscreenButtonHint is set on Mac.
@@ -92,6 +96,12 @@ ApplicationWindow {
     StyleItem { id: styleItem }
     property bool platformIsMac: styleItem.style == "mac"
 
+    Action {
+        shortcut: "Ctrl+D"
+        onTriggered: {
+            downloadView.visible = !downloadView.visible
+        }
+    }
 
     Action {
         id: focus
@@ -435,6 +445,13 @@ ApplicationWindow {
             }
         }
     }
+
+    DownloadView {
+        id: downloadView
+        visible: false
+        anchors.fill: parent
+    }
+
     ZoomController {
       id: zoomController
       y: parent.mapFromItem(currentWebView, 0 , 0).y - 4
diff --git a/tests/quicktestbrowser/resources.qrc b/tests/quicktestbrowser/resources.qrc
index 4880b3d65..3c9fd5dd7 100644
--- a/tests/quicktestbrowser/resources.qrc
+++ b/tests/quicktestbrowser/resources.qrc
@@ -4,6 +4,7 @@
         <file>ContextMenuExtras.qml</file>
         <file>FeaturePermissionBar.qml</file>
         <file>ButtonWithMenu.qml</file>
+        <file>DownloadView.qml</file>
         <file>ZoomController.qml</file>
     </qresource>
     <qresource prefix="icons">