speed up overview page loading

contributes to #198

qml/components/ChatListViewItem.qml

@@ -24,7 +24,23 @@ PhotoTextsListItem {
     isSecret: ( chat_type === TelegramAPI.ChatTypeSecret )
 
     openMenuOnPressAndHold: true//chat_id != overviewPage.ownUserId
-    menu: ContextMenu {
+
+    onPressAndHold: {
+        contextMenuLoader.active = true;
+    }
+
+    Loader {
+        id: contextMenuLoader
+        active: false
+        asynchronous: true
+        onStatusChanged: {
+            if(status === Loader.Ready) {
+                listItem.menu = item;
+                listItem.openMenu();
+            }
+        }
+        sourceComponent: Component {
+            ContextMenu {
                 MenuItem {
                     visible: unread_count > 0
                     onClicked: {
@@ -59,5 +75,7 @@ PhotoTextsListItem {
                     text: model.display.type['@type'] === "chatTypePrivate" ? qsTr("User Info") : qsTr("Group Info")
                 }
             }
+        }
+    }
 
 }

qml/components/chatInformationPage/ChatInformationTabItemMembersGroups.qml

@@ -154,15 +154,6 @@ ChatInformationTabItemBase {
                 pageStack.pop(pageStack.find( function(page){ return(page._depth === 0)} ), PageStackAction.Immediate);
                 pageStack.push(Qt.resolvedUrl("../../pages/ChatPage.qml"), { "chatInformation" : display });
             }
-            Connections {
-                target: chatListModel
-                onChatChanged: {
-                    if (changedChatId === chat_id) {
-                        // Force update of some list item elements (currently only last message text seems to create problems). dataChanged() doesn't seem to trigger them all :(
-                        secondaryText.text = last_message_text ? Emoji.emojify(Functions.enhanceHtmlEntities(last_message_text), Theme.fontSizeExtraSmall) : qsTr("Unknown")
-                    }
-                }
-            }
         }
     }
 

qml/pages/OverviewPage.qml

@@ -59,13 +59,13 @@ Page {
 
     Timer {
         id: chatListCreatedTimer
-        interval: 300
+        interval: 20
         running: false
         repeat: false
         onTriggered: {
             overviewPage.chatListCreated = true;
-            chatListModel.redrawModel();
             chatListView.scrollToTop();
+            updateSecondaryContentTimer.start();
         }
     }
 
@@ -76,6 +76,15 @@ Page {
             pageStack.push(Qt.resolvedUrl("../pages/InitializationPage.qml"));
         }
     }
+    Timer {
+        id: updateSecondaryContentTimer
+        interval: 600
+        onTriggered: {
+            tdLibWrapper.getRecentStickers();
+            tdLibWrapper.getInstalledStickerSets();
+            tdLibWrapper.getContacts();
+        }
+    }
 
     function setPageStatus() {
         switch (overviewPage.connectionState) {
@@ -104,9 +113,6 @@ Page {
 
     function updateContent() {
         tdLibWrapper.getChats();
-        tdLibWrapper.getRecentStickers();
-        tdLibWrapper.getInstalledStickerSets();
-        tdLibWrapper.getContacts();
     }
 
     function initializePage() {
@@ -210,15 +216,10 @@ Page {
             }
         }
 
-        Column {
+        PageHeader {
-            id: column
+            id: pageHeader
-            width: parent.width
+            title: qsTr("Fernschreiber")
-            height: parent.height
+            leftMargin: Theme.itemSizeMedium
-            spacing: Theme.paddingMedium
-
-            Row {
-                id: headerRow
-                width: parent.width
 
             GlassItem {
                 id: pageStatus
@@ -229,50 +230,29 @@ Page {
                 radius: 0.2
                 cache: false
             }
-
-                PageHeader {
-                    id: pageHeader
-                    title: qsTr("Fernschreiber")
-                    width: parent.width - pageStatus.width
         }
-            }
-
-            Item {
-                id: chatListItem
-                width: parent.width
-                height: parent.height - Theme.paddingMedium - headerRow.height
 
         SilicaListView {
-
             id: chatListView
-
+            anchors {
-                    anchors.fill: parent
+                top: pageHeader.bottom
-
+                bottom: parent.bottom
+                left: parent.left
+                right: parent.right
+            }
             clip: true
             opacity: overviewPage.chatListCreated ? 1 : 0
-                    Behavior on opacity { NumberAnimation {} }
+            Behavior on opacity { FadeAnimation {} }
-
             model: chatListModel
             delegate: ChatListViewItem {
                 ownUserId: overviewPage.ownUserId
                 isVerified: is_verified
-
                 onClicked: {
                     pageStack.push(Qt.resolvedUrl("../pages/ChatPage.qml"), {
                         chatInformation : display,
                         chatPicture: photo_small
                     })
                 }
-
-                        Connections {
-                            target: chatListModel
-                            onChatChanged: {
-                                if (overviewPage.chatListCreated && changedChatId === chat_id) {
-                                    // Force update of some list item elements (currently only last message text seems to create problems). dataChanged() doesn't seem to trigger them all :(
-                                    secondaryText.text = last_message_text ? Emoji.emojify(Functions.enhanceHtmlEntities(last_message_text), Theme.fontSizeExtraSmall) : qsTr("Unknown")
-                                }
-                            }
-                        }
             }
 
             ViewPlaceholder {
@@ -285,12 +265,11 @@ Page {
 
         Column {
             width: parent.width
-                    height: loadingLabel.height + loadingBusyIndicator.height + Theme.paddingMedium
             spacing: Theme.paddingMedium
-                    anchors.verticalCenter: parent.verticalCenter
+            anchors.verticalCenter: chatListView.verticalCenter
 
             opacity: overviewPage.chatListCreated ? 0 : 1
-                    Behavior on opacity { NumberAnimation {} }
+            Behavior on opacity { FadeAnimation {} }
             visible: !overviewPage.chatListCreated
 
             InfoLabel {
@@ -306,6 +285,4 @@ Page {
             }
         }
     }
-        }
-    }
 }