Allow picking multiple files to upload

TODO.md

@@ -1,11 +1,9 @@
 - Media
-  - Downloading
-    - Bottom/top bar
   - Verify things work with chat.privacytools.io (subdomain weirdness)
-  - Show real progression for mxc thumbnail loadings, uploads and downloads
-  - Confirmation box after picking file to upload
-  - Handle upload errors, file too big, etc
   - Allow multiple file selection
+  - Confirmation box after picking file to upload
+  - Handle upload errors: non existent path, path is a dir, file too big, etc
+  - Show real progression for mxc thumbnail loadings, uploads and downloads
 
   - Support m.file thumbnails
   - Generate video thumbnails
@@ -16,6 +14,7 @@
   - Video: missing buttons and small size problems
   - Audio: online playback is buggy, must download+play file
   - EventLink
+  - Downloading (right click on media > save as...)
 
 - RoomMessageNotice
 

src/qml/Dialogs/HFileDialogOpener.qml

@@ -6,7 +6,8 @@ Item {
     anchors.fill: fill ? parent : undefined
 
 
-    signal filePicked()
+    signal filePicked(string file)
+    signal filesPicked(var files)
     signal cancelled()
 
 
@@ -15,6 +16,8 @@ Item {
     property alias dialog: fileDialog
     property string selectedFile: ""
     property string file: ""
+    property var selectedFiles: []
+    property var files: []
 
     property string selectSubject:
         dialog.fileMode === FileDialog.SaveFile ? qsTr("file") : qsTr("open")
@@ -61,15 +64,26 @@ Item {
         onVisibleChanged: if (visible) {
             opener.selectedFile   = Qt.binding(() => Qt.resolvedUrl(currentFile))
             opener.file           = Qt.binding(() => Qt.resolvedUrl(file))
+            opener.files          = Qt.binding(() => Qt.resolvedUrl(files))
+            opener.selectedFiles  =
+                Qt.binding(() => Qt.resolvedUrl(currentFiles))
         }
+
         onAccepted: {
             opener.selectedFile  = currentFile
+            opener.selectedFiles = currentFiles
             opener.file          = file
+            opener.files         = files
+
             opener.filePicked(file)
+            opener.filesPicked(files)
         }
+
         onRejected: {
             selectedFile  = ""
             file          = ""
+            selectedFiles = ""
+            files         = ""
             cancelled()
         }
     }

src/qml/Dialogs/SendFilePicker.qml

@@ -1,11 +1,14 @@
 import QtQuick 2.12
+import Qt.labs.platform 1.1
 import "../utils.js" as Utils
 
 HFileDialogOpener {
     fill: false
     dialog.title: qsTr("Select a file to send")
+    dialog.fileMode: FileDialog.OpenFiles
 
-    onFilePicked: {
+    onFilesPicked: {
+        for (let file of files) {
             let path = Qt.resolvedUrl(file).replace(/^file:/, "")
 
             Utils.sendFile(userId, roomId, path, () => {
@@ -16,6 +19,7 @@ HFileDialogOpener {
                 if (destroyWhenDone) destroy()
             })
         }
+    }
 
     onCancelled: if (destroyWhenDone) destroy()