[Widgets] wire the file pickers

Introduce a new version of chooseFiles in QWebEnginePage.
The existing API in WebKit1 seemed a bit dusty in any case (multiple
only supported via extensions).

Changes are:
  * oldFile becomes oldFiles, so that we could at a later stage expose
    the already selected files in the "multiple" case.
  * a type is introduced, for now limited to multiple selection, but
    over time, we might consider additions such as directory upload.

Change-Id: I14cfea64ce95e892a0a1877c8cb914c5a421409f
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/src/core/type_conversion.h b/src/core/type_conversion.h
index 659096b6e..a1c39581f 100644
--- a/src/core/type_conversion.h
+++ b/src/core/type_conversion.h
@@ -51,6 +51,7 @@
 #include "third_party/skia/include/utils/SkMatrix44.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/rect.h"
+#include "ui/shell_dialogs/selected_file_info.h"
 #include "url/gurl.h"
 
 inline QString toQt(const base::string16 &string)
@@ -134,4 +135,31 @@ inline base::FilePath::StringType toFilePathString(const QString &str)
 #endif
 }
 
+template <typename T>
+inline T fileListingHelper(const QString &) {qFatal("Specialization missing for %s.", Q_FUNC_INFO);}
+
+template <>
+inline ui::SelectedFileInfo fileListingHelper<ui::SelectedFileInfo>(const QString &file)
+{
+    base::FilePath fp(toFilePathString(file));
+    return ui::SelectedFileInfo(fp, fp);
+}
+
+template <>
+inline base::FilePath fileListingHelper<base::FilePath>(const QString &file)
+{
+    return base::FilePath(toFilePathString(file));
+}
+
+
+template <typename T>
+inline std::vector<T> toVector(const QStringList &fileList)
+{
+    std::vector<T> selectedFiles;
+    selectedFiles.reserve(fileList.size());
+    Q_FOREACH (const QString &file, fileList)
+        selectedFiles.push_back(fileListingHelper<T>(file));
+    return selectedFiles;
+}
+
 #endif // TYPE_CONVERSION_H