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>

1 files changed, 19 insertions, 27 deletions

diff --git a/src/core/download_manager_delegate_qt.h b/src/core/download_manager_delegate_qt.h
index 4c838363f..007f2e580 100644
--- a/src/core/download_manager_delegate_qt.h
+++ b/src/core/download_manager_delegate_qt.h
@@ -39,7 +39,7 @@
 
 #include "content/public/browser/download_manager_delegate.h"
 
-#include <qglobal.h>
+#include <QtCore/qcompilerdetection.h> // Needed for Q_DECL_OVERRIDE
 
 namespace base {
 class FilePath;
@@ -51,46 +51,38 @@ class DownloadItem;
 class WebContents;
 }
 
-class DownloadTargetHelper;
-
-class DownloadManagerDelegateQt : public content::DownloadManagerDelegate
+class BrowserContextAdapter;
+class DownloadManagerDelegateInstance;
+class DownloadManagerDelegateQt
+        : public content::DownloadManagerDelegate
+        , public content::DownloadItem::Observer
 {
 public:
-    DownloadManagerDelegateQt();
-    virtual ~DownloadManagerDelegateQt();
-
-    void Shutdown() Q_DECL_OVERRIDE;
+    DownloadManagerDelegateQt(BrowserContextAdapter *contextAdapter);
+    ~DownloadManagerDelegateQt();
     void GetNextId(const content::DownloadIdCallback& callback) Q_DECL_OVERRIDE;
-    bool ShouldOpenFileBasedOnExtension(const base::FilePath& path) Q_DECL_OVERRIDE;
-    bool ShouldCompleteDownload(content::DownloadItem* item,
-                                const base::Closure& complete_callback) Q_DECL_OVERRIDE;
-
-    bool ShouldOpenDownload(content::DownloadItem* item,
-                            const content::DownloadOpenDelayedCallback& callback) Q_DECL_OVERRIDE;
 
     bool DetermineDownloadTarget(content::DownloadItem* item,
                                  const content::DownloadTargetCallback& callback) Q_DECL_OVERRIDE;
 
-    bool GenerateFileHash() Q_DECL_OVERRIDE;
-    void ChooseSavePath(content::WebContents* web_contents,
-                        const base::FilePath& suggested_path,
-                        const base::FilePath::StringType& default_extension,
-                        bool can_save_as_complete,
-                        const content::SavePackagePathPickedCallback& callback) Q_DECL_OVERRIDE;
-
-    void OpenDownload(content::DownloadItem* download) Q_DECL_OVERRIDE;
-    void ShowDownloadInShell(content::DownloadItem* download) Q_DECL_OVERRIDE;
-    void CheckForFileExistence(content::DownloadItem* download,
-                               const content::CheckForFileExistenceCallback& callback) Q_DECL_OVERRIDE;
-
     void GetSaveDir(content::BrowserContext* browser_context,
                     base::FilePath* website_save_dir,
                     base::FilePath* download_save_dir,
                     bool* skip_dir_check) Q_DECL_OVERRIDE;
 
+    void cancelDownload(quint32 downloadId);
+
+    // Inherited from content::DownloadItem::Observer
+    void OnDownloadUpdated(content::DownloadItem *download) Q_DECL_OVERRIDE;
+    void OnDownloadDestroyed(content::DownloadItem *download) Q_DECL_OVERRIDE;
+
 private:
-    DownloadTargetHelper* m_targetHelper;
+    void cancelDownload(const content::DownloadTargetCallback& callback);
+    BrowserContextAdapter *m_contextAdapter;
+
     uint64 m_currentId;
+
+    friend class DownloadManagerDelegateInstance;
     DISALLOW_COPY_AND_ASSIGN(DownloadManagerDelegateQt);
 };