QML UI: use action button and Android back button to save / go back

This is more consistent with the rest of our UI

To make this work you once again need changes to the mobile components
that aren't upstream, yet.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

qt-mobile/qml/CloudCredentials.qml

@@ -14,6 +14,13 @@ Item {
 	property string password: password.text;
 	property bool issave: savePassword.checked;
 
+	function saveCredentials() {
+		manager.cloudUserName = login.text
+		manager.cloudPassword = password.text
+		manager.saveCloudPassword = savePassword.checked
+		manager.saveCloudCredentials()
+	}
+
 	ColumnLayout {
 		id: outerLayout
 		width: subsurfaceTheme.columnWidth - 2 * MobileComponents.Units.gridUnit
@@ -71,34 +78,5 @@ Item {
 			}
 		}
 		Item { width: MobileComponents.Units.gridUnit; height: width }
-		RowLayout {
-			Item {
-				height: saveButton.height
-				width: saveButton.width
-				SubsurfaceButton {
-					id: saveButton
-					text: "Save"
-					onClicked: {
-						manager.cloudUserName = login.text
-						manager.cloudPassword = password.text
-						manager.saveCloudPassword = savePassword.checked
-						manager.saveCloudCredentials()
-					}
-				}
-			}
-			Item {
-				height: backButton.height
-				width: backButton.width
-				visible: diveListView.count > 0 && manager.credentialStatus != QMLManager.INVALID
-				SubsurfaceButton {
-					id: backButton
-					text: "Back to dive list"
-					onClicked: {
-						manager.credentialStatus = oldStatus
-					}
-				}
-			}
-		}
-
 	}
 }

qt-mobile/qml/DiveList.qml

@@ -184,13 +184,37 @@ MobileComponents.Page {
 			}
 		}
 	}
+
+	property QtObject saveAction: Action {
+		iconName: "document-save"
+		onTriggered: {
+			startPage.saveCredentials();
+		}
+	}
+
+	onBackRequested: {
+		if (diveListView.count > 0 && manager.credentialStatus != QMLManager.INVALID) {
+			manager.credentialStatus = oldStatus
+		}
+		event.accepted = true;
+	}
+
 	ScrollView {
 		id: startPageWrapper
 		anchors.fill: parent
 		opacity: (diveListView.count > 0 && (credentialStatus == QMLManager.VALID || credentialStatus == QMLManager.VALID_EMAIL)) ? 0 : 1
 		visible: opacity > 0
 		Behavior on opacity { NumberAnimation { duration: MobileComponents.Units.shortDuration } }
+		onVisibleChanged: {
+			if (visible) {
+				page.mainAction = page.saveAction
+			} else {
+				page.mainAction = null
+			}
+		}
+
 		StartPage {
+			id: startPage
 		}
 	}
 }

qt-mobile/qml/StartPage.qml

@@ -13,6 +13,8 @@ ColumnLayout {
 
 	property int buttonWidth: width * 0.9
 
+	function saveCredentials() { cloudCredentials.saveCredentials() }
+
 	MobileComponents.Heading {
 		Layout.bottomMargin: MobileComponents.Units.largeSpacing
 			text: "Subsurface-mobile"
@@ -32,6 +34,7 @@ ColumnLayout {
 		wrapMode: Text.WordWrap
 	}
 	CloudCredentials {
+		id: cloudCredentials
 		Layout.fillWidth: true
 		Layout.margins: MobileComponents.Units.gridUnit
 		Layout.topMargin: MobileComponents.Units.gridUnit * 2