Fix FileDialog::selectedNameFilter review findings

FileDialog::nameFilters contains an array of name filter strings that
combine the name and extensions. For example:
 - "Text files (*.txt)"
 - "HTML files (*.html *.htm)"

When dealing with multiple name filters, it is quite clumsy to use
a string type of 'selectedNameFilter' which is one of the above full
file name filter string values. Make it possible to read/write the
index of the selected name filter, and provide the filter's name and
extensions separately.

Change-Id: Ie416cc4ab3dcde93c10769b6f7ac44915307f194
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>

1 files changed, 25 insertions, 1 deletions

diff --git a/src/imports/platform/plugins.qmltypes b/src/imports/platform/plugins.qmltypes
index 2bee7276..01d8eb94 100644
--- a/src/imports/platform/plugins.qmltypes
+++ b/src/imports/platform/plugins.qmltypes
@@ -130,12 +130,36 @@ Module {
         Property { name: "folder"; type: "QUrl" }
         Property { name: "options"; type: "QFileDialogOptions::FileDialogOptions" }
         Property { name: "nameFilters"; type: "QStringList" }
-        Property { name: "selectedNameFilter"; type: "string" }
+        Property {
+            name: "selectedNameFilter"
+            type: "QQuickPlatformFileNameFilter"
+            isReadonly: true
+            isPointer: true
+        }
         Property { name: "defaultSuffix"; type: "string" }
         Property { name: "acceptLabel"; type: "string" }
         Property { name: "rejectLabel"; type: "string" }
     }
     Component {
+        name: "QQuickPlatformFileNameFilter"
+        prototype: "QObject"
+        Property { name: "index"; type: "int" }
+        Property { name: "name"; type: "string"; isReadonly: true }
+        Property { name: "extensions"; type: "QStringList"; isReadonly: true }
+        Signal {
+            name: "indexChanged"
+            Parameter { name: "index"; type: "int" }
+        }
+        Signal {
+            name: "nameChanged"
+            Parameter { name: "name"; type: "string" }
+        }
+        Signal {
+            name: "extensionsChanged"
+            Parameter { name: "extensions"; type: "QStringList" }
+        }
+    }
+    Component {
         name: "QQuickPlatformFolderDialog"
         defaultProperty: "data"
         prototype: "QQuickPlatformDialog"