feat(StatusListItem): Added `loading` and `loadingFailed` properties (#736)

ui/StatusQ/sandbox/controls/ListItems.qml

@@ -445,4 +445,33 @@ CExPynn1gWf9bx498P7/nzPcxEzGExhBdJGYihtAYQlO+tUZvqrPbqeudo5iJGEJjCE15a3VtodH3q2I
         isAdmin: true
         isUntrustworthy: true
     }
+
+    StatusBaseText {
+        Layout.fillWidth: true
+        Layout.topMargin: 16
+        text: "Loading features:"
+        font.pixelSize: 17
+    }
+
+    StatusListItem {
+        title: "Nokia 3310"
+        subTitle: "Incoming device"
+        label: "loading: true"
+        icon.emoji: "😁"
+        icon.color: "hotpink"
+        icon.letterSize: 14
+        icon.isLetterIdenticon: true
+        loading: true
+    }
+
+    StatusListItem {
+        title: "Nokia 3310"
+        subTitle: "Device"
+        label: "loadingFailed: true"
+        icon.emoji: "😁"
+        icon.color: "hotpink"
+        icon.letterSize: 14
+        icon.isLetterIdenticon: true
+        loadingFailed: true
+    }
 }

ui/StatusQ/src/StatusQ/Animations/SkeletonAnimation.qml

@@ -0,0 +1,30 @@
+import QtQuick 2.14
+import QtGraphicalEffects 1.14
+
+Item {
+    id: root
+
+    property Item mask
+    property color color: "#F6F8FA"
+
+    Rectangle {
+        id: gradient
+        anchors.fill: parent
+        visible: false
+
+        gradient: Gradient {
+            orientation: Gradient.Horizontal
+            SkeletonGradientStop { color: "transparent"; from: -3; }
+            SkeletonGradientStop { color: "transparent"; from: -2; }
+            SkeletonGradientStop { color: root.color; from: -1 ; }
+            SkeletonGradientStop { color: "transparent"; from: 0; }
+            SkeletonGradientStop { color: "transparent"; from: 1; }
+        }
+    }
+
+    OpacityMask {
+        anchors.fill: parent
+        source: gradient
+        maskSource: root.mask
+    }
+}

ui/StatusQ/src/StatusQ/Animations/SkeletonGradientStop.qml

@@ -0,0 +1,23 @@
+import QtQuick 2.14
+import QtGraphicalEffects 1.14
+
+/*
+    TODO:   This component should be implemented as inline component of `SkeletonAnimation.qml`
+            when we use Qt > 5.15
+*/
+
+GradientStop {
+    id: root
+
+    property real from: 0
+
+    color: "transparent"
+
+    NumberAnimation on position {
+        easing.type: Easing.Linear
+        loops: Animation.Infinite
+        from: root.from
+        to: from + 4
+        duration: 2000
+    }
+}

ui/StatusQ/src/StatusQ/Animations/qmldir

@@ -0,0 +1,4 @@
+module StatusQ.Animations
+
+SkeletonAnimation 0.1 SkeletonAnimation.qml
+SkeletonGradientStop 0.1 SkeletonGradientStop.qml

ui/StatusQ/src/StatusQ/Components/StatusListItem.qml

@@ -5,6 +5,10 @@ import StatusQ.Core 0.1
 import StatusQ.Core.Theme 0.1
 import StatusQ.Components 0.1
 import StatusQ.Controls 0.1
+import StatusQ.Animations 0.1
+import QtGraphicalEffects 1.14
+
+import "private"
 
 Rectangle {
     id: statusListItem
@@ -27,6 +31,8 @@ Rectangle {
     property Component bottomDelegate
     property var tagsModel: []
     property Component tagsDelegate
+    property bool loading: false
+    property bool loadingFailed: false
 
     property StatusIconSettings icon: StatusIconSettings {
         height: isLetterIdenticon ? 40 : 20
@@ -134,6 +140,7 @@ Rectangle {
             anchors.leftMargin: statusListItem.leftPadding
             anchors.top: parent.top
             anchors.topMargin: 12
+            visible: !iconOrImageLoadingOverlay.visible
             image: statusListItem.image
             icon: statusListItem.icon
             name: statusListItem.title
@@ -145,6 +152,20 @@ Rectangle {
             ringSettings: statusListItem.ringSettings
         }
 
+        Rectangle {
+            id: iconOrImageLoadingOverlay
+            visible: statusListItem.loading || statusListItem.loadingFailed
+            anchors.fill: iconOrImage
+            radius: width / 2
+            color: statusListItem.loadingFailed ? Theme.palette.dangerColor2 : Theme.palette.baseColor1
+
+            SkeletonAnimation {
+                anchors.fill: parent
+                mask: parent
+                visible: statusListItem.loading && !statusListItem.loadingFailed
+            }
+        }
+
         Item {
             id: statusListItemTitleArea
 
@@ -164,8 +185,29 @@ Rectangle {
 
             height: childrenRect.height
 
+            Rectangle {
+                id: titleLoadingOverlay
+                visible: statusListItem.loading || statusListItem.loadingFailed
+                anchors {
+                    left: statusListItemTitle.left
+                    top: statusListItemTitle.top
+                    bottom: statusListItemTitle.bottom
+                }
+
+                width: Math.max(95, statusListItemTitle.width)
+                radius: 4
+                color: statusListItem.loadingFailed ? Theme.palette.dangerColor2 : Theme.palette.baseColor1
+
+                SkeletonAnimation {
+                    anchors.fill: parent
+                    mask: parent
+                    visible: statusListItem.loading && !statusListItem.loadingFailed
+                }
+            }
+
             StatusBaseText {
                 id: statusListItemTitle
+                opacity: titleLoadingOverlay.visible ? 0 : 1
                 text: statusListItem.title
                 font.pixelSize: 15
                 height: visible ? contentHeight : 0
@@ -235,7 +277,10 @@ Rectangle {
                 width: parent.width
                 text: statusListItem.subTitle
                 font.pixelSize: 15
-                color: !statusListItem.enabled || !statusListItem.tertiaryTitle ? Theme.palette.baseColor1 : Theme.palette.directColor1
+                color: statusListItem.loadingFailed ? Theme.palette.dangerColor1
+                                                    : !statusListItem.enabled || !statusListItem.tertiaryTitle
+                                                      ? Theme.palette.baseColor1
+                                                      : Theme.palette.directColor1
                 height: visible ? contentHeight : 0
                 visible: !!statusListItem.subTitle
                 wrapMode: Text.WrapAtWordBoundaryOrAnywhere

ui/StatusQ/statusq.qrc

@@ -10502,5 +10502,8 @@
         <file>src/assets/twemoji/LICENSE</file>
         <file>src/StatusQ/Controls/StatusTabBar.qml</file>
         <file>src/StatusQ/Controls/StatusTagItem.qml</file>
+        <file>src/StatusQ/Animations/SkeletonAnimation.qml</file>
+        <file>src/StatusQ/Animations/SkeletonGradientStop.qml</file>
+        <file>src/StatusQ/Animations/qmldir</file>
     </qresource>
 </RCC>