Added SortOrder and fallback pages.

Once again I couldn't stop myself from being sidetracked.
[Collections]: Added: allow specifying sort order (Ascending, Descending)
[General]: Improved: Added video fallback page to allow unknown video types to be played, although without extra metadata.
[General]: Improved: Added folder fallback, so unknown collection types are at least displayed without metadata.

qml/pages/itemdetails/CollectionPage.qml

@@ -62,17 +62,13 @@ BaseDetailPage {
                 fillMode: Image.PreserveAspectCrop
                 clip: true
             }
-            Rectangle {
+            Shim {
                 anchors {
                     left: parent.left
                     bottom: parent.bottom
                     right: parent.right
                 }
                 height: itemName.height + Theme.paddingSmall * 2
-                gradient: Gradient {
-                    GradientStop { position: 0.0; color: "transparent" }
-                    GradientStop { position: 1.0; color: Theme.highlightDimmerColor }
-                }
                 visible: itemImage.status !== Image.Null
             }
             Label {
@@ -96,7 +92,7 @@ BaseDetailPage {
                     pageStack.push(Qt.resolvedUrl("CollectionPage.qml"), {"itemId": model.id})
                     break;
                 default:
-                    pageStack.push(Utils.getPageUrl(model.type), {"itemId": model.id})
+                    pageStack.push(Utils.getPageUrl(model.mediaType, model.type), {"itemId": model.id})
                 }
             }
         }
@@ -110,6 +106,8 @@ BaseDetailPage {
         VerticalScrollDecorator {}
     }
 
+    // The page for selecting a sort order
+
     Component {
         id: sortPageComponent
         Page {
@@ -139,8 +137,23 @@ BaseDetailPage {
                         }
                         text: model.name
                     }
-                    onClicked: {
-                        collectionModel.sortBy = [model.value]
+                    menu: ContextMenu {
+                        MenuItem {
+                            //: Sort order
+                            text: qsTr("Ascending")
+                            onClicked: apply(model.value, ApiModel.Ascending)
+                        }
+                        MenuItem {
+                            //: Sort order
+                            text: qsTr("Descending")
+                            onClicked: apply(model.value, ApiModel.Descending)
+                        }
+                    }
+                    onClicked: openMenu()
+
+                    function apply(field, order) {
+                        collectionModel.sortBy = [field];
+                        collectionModel.sortOrder = order;
                         collectionModel.reload()
                         pageStack.pop()
                     }

qml/pages/itemdetails/SeasonPage.qml

@@ -122,7 +122,7 @@ BaseDetailPage {
                         wrapMode: Text.WordWrap
                         elide: Text.ElideRight
                     }
-                    onClicked: pageStack.push(Utils.getPageUrl(model.type), {"itemId": model.id})
+                    onClicked: pageStack.push(Utils.getPageUrl(model.mediaType, model.type), {"itemId": model.id})
                 }
             }
 

qml/pages/itemdetails/SeriesPage.qml

@@ -80,7 +80,7 @@ BaseDetailPage {
                 delegate: LibraryItemDelegate {
                     poster: Utils.itemModelImageUrl(ApiClient.baseUrl, model.id, model.imageTags["Primary"], "Primary", {"maxHeight": height})
                     title: model.name
-                    onClicked: pageStack.push(Utils.getPageUrl(model.type), {"itemId": model.id})
+                    onClicked: pageStack.push(Utils.getPageUrl(model.mediaType, model.type), {"itemId": model.id})
                 }
             }
 

qml/pages/itemdetails/VideoPage.qml

@@ -0,0 +1,63 @@
+/*
+Sailfin: a Jellyfin client written using Qt
+Copyright (C) 2020 Chris Josten
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+import QtQuick 2.6
+import Sailfish.Silica 1.0
+
+import nl.netsoj.chris.Jellyfin 1.0
+
+import "../../components"
+import "../.."
+
+/**
+ * Fallback page for everything that's a video, but we haven't a more specific page for, like
+ * the FilmPage or EpisodePage.
+ */
+BaseDetailPage {
+    SilicaFlickable {
+        anchors.fill: parent
+        contentHeight: content.height
+
+        Column {
+            id: content
+            width: parent.width
+            spacing: Theme.paddingMedium
+
+            PageHeader {
+                title: itemData.Name
+                description: qsTr("Run time: %2").arg(Utils.ticksToText(itemData.RunTimeTicks))
+            }
+
+            PlayToolbar {
+                width: parent.width
+                imageSource: Utils.itemImageUrl(ApiClient.baseUrl, itemData, "Primary", {"maxWidth": parent.width})
+                imageAspectRatio: Constants.horizontalVideoAspectRatio
+                onPlayPressed: pageStack.push(Qt.resolvedUrl("../../pages/VideoPage.qml"),
+                                              {"itemId": itemId, "itemData": itemData, "audioTrack": trackSelector.audioTrack,
+                                                  "subtitleTrack": trackSelector.subtitleTrack })
+            }
+
+            VideoTrackSelector {
+                id: trackSelector
+                width: parent.width
+                tracks: itemData.MediaStreams
+            }
+        }
+    }
+}