Aparte bestanden en signalen gebruiken

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import QtQuick 2.6
import QtQuick.Controls 2.0 as Controls
import QtQuick.Layouts 1.2
import org.kde.kirigami 2.13 as Kirigami

// Base element, provides basic features needed for all kirigami applications
Kirigami.ApplicationWindow {
	// ID provides unique identifier to reference this element
	id: root
	
	// Window title
	title: i18nc("@title:window", "Day Kountdown")

	// Global drawer element with app-wide actions
	globalDrawer: Kirigami.GlobalDrawer {
		// Makes drawer a small menu rather than sliding pane
		isMenu: true
		actions: [
			Kirigami.Action {
				text: i18n("Quit")
				icon.name: "gtk-quit"
				shortcut: StandardKey.Quit
				onTriggered: Qt.quit()
			}
		]
	}
	
	// ListModel needed for ListView, contains elements to be displayed
	ListModel {
		id: kountdownModel
	}
	
	// Fetches item from addEditSheet.qml and does action on signal
	AddEditSheet { 
		id: addEditSheet
		onAdded: kountdownModel.append({
			"name": name, 
			"description": description, 
			"date": Date.parse(kdate)
		});
		onEdited: kountdownModel.set(index, {
			"name": name, 
			"description": description, 
			"date": Date.parse(kdate) 
		});
		onRemoved: kountdownModel.remove(index, 1)
	}

	// Function called by 'edit' button on card
	function openPopulateSheet(mode, index = -1, listName = "", listDesc = "", listDate = "") {
		addEditSheet.mode = mode
		if(mode === "edit") {
			addEditSheet.index = index;
			addEditSheet.name = listName
			addEditSheet.description = listDesc
			addEditSheet.kdate = listDate
		}
		addEditSheet.open()
	}


	// Initial page to be loaded on app load
	pageStack.initialPage: Kirigami.ScrollablePage {
		// Title for the current page, placed on the toolbar
		title: i18nc("@title", "Kountdown")

		// Kirigami.Action encapsulates a UI action. Inherits from QQC2 Action
		actions.main: Kirigami.Action {
			id: addAction
			// Name of icon associated with the action
			icon.name: "list-add"
			// Action text, i18n function returns translated string
			text: i18nc("@action:button", "Add kountdown")
			// What to do when triggering the action
			onTriggered: openPopulateSheet("add")
		}
		
		// List view for card elements
		Kirigami.CardsListView {
			id: layout
			// Model contains info to be displayed
			model: kountdownModel
			// Delegate is how the information will be presented in the ListView
			delegate: KountdownDelegate {}
		}
	}
}

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import QtQuick 2.6
import QtQuick.Controls 2.3 as Controls
import QtQuick.Layouts 1.2
import org.kde.kirigami 2.13 as Kirigami

// Overlay sheets appear over a part of the window
Kirigami.OverlaySheet {
	id: addEditSheet
	
	// Sheet mode
	property string mode: "add"
	
	property int index: -1
	property string name: ""
	property string description: ""
	property string kdate: ""
	
	// Signals can be read and certain actions performed when these happen
	signal added (string name, string description, var kdate)
	signal edited(int index, string name, string description, var kdate)
	signal removed(int index)
	
	header: Kirigami.Heading {
		// i18nc is useful for adding context for translators
		text: mode === "add" ? i18nc("@title:window", "Add kountdown") : 
			i18nc("@title:window", "Edit kountdown")
	}
	// Form layouts help align and structure a layout with several inputs
	Kirigami.FormLayout {
		// Textfields let you input text in a thin textbox
		Controls.TextField {
			id: nameField
			// Provides label attached to the textfield
			Kirigami.FormData.label: i18nc("@label:textbox", "Name:")
			// Placeholder text is visible before you enter anything
			placeholderText: i18n("Event name (required)")
			// What to do after input is accepted (i.e. pressed enter)
			// In this case, it moves the focus to the next field
			text: mode === "add" ? "" : name
			onAccepted: descriptionField.forceActiveFocus()
		}
		Controls.TextField {
			id: descriptionField
			Kirigami.FormData.label: i18nc("@label:textbox", "Description:")
			placeholderText: i18n("Optional")
			text: mode === "add" ? "" : description
			onAccepted: dateField.forceActiveFocus()
		}
		Controls.TextField {
			id: dateField
			Kirigami.FormData.label: i18nc("@label:textbox", "Date:")
			inputMask: "0000-00-00"
			placeholderText: i18n("YYYY-MM-DD")
			text: mode === "add" ? "" : kdate
		}
		// This is a button.
		Controls.Button {
			id: deleteButton
			Layout.fillWidth: true
			text: i18nc("@action:button", "Delete")
			visible: mode === "edit"
			onClicked: {
				addEditSheet.removed(addEditSheet.index)
				close();
			}
		}
		Controls.Button {
			id: doneButton
			Layout.fillWidth: true
			text: i18nc("@action:button", "Done")
			// Button is only enabled if the user has entered something into the nameField
			enabled: nameField.text.length > 0
			onClicked: {
				// Add a listelement to the kountdownModel ListModel
				if(mode === "add") {
					addEditSheet.added(
						nameField.text, 
						descriptionField.text, 
						dateField.text
					);
				}
				else {
					addEditSheet.edited(
						index, 
						nameField.text, 
						descriptionField.text, 
						dateField.text 
					);
				}
				close();
			}
		}
	}
}

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import QtQuick 2.6
import QtQuick.Controls 2.0 as Controls
import QtQuick.Layouts 1.2
import org.kde.kirigami 2.13 as Kirigami

Kirigami.AbstractCard {
	id: kountdownDelegate
	// contentItem property includes the content to be displayed on the card
	contentItem: Item {
    	// implicitWidth/Height define the natural width/height of an item if no width or height is specified
		// The setting below defines a component's preferred size based on its content
		implicitWidth: delegateLayout.implicitWidth
		implicitHeight: delegateLayout.implicitHeight
		GridLayout {
			id: delegateLayout
			// QtQuick anchoring system allows quick definition of anchor points for positioning
			anchors {
				left: parent.left
				top: parent.top
				right: parent.right
			}
			rowSpacing: Kirigami.Units.largeSpacing
			columnSpacing: Kirigami.Units.largeSpacing
			columns: root.wideScreen ? 4 : 2
				
			Kirigami.Heading {
				// Heading will be as tall as possible while respecting constraints
				Layout.fillHeight: true
				// Level determines the size of the heading
				level: 1
				text: i18n("%1 days", Math.round((date-Date.now())/86400000))
			}
			
			// Layout for positioning elements vertically
			ColumnLayout {
				Kirigami.Heading {
					Layout.fillWidth: true
					level: 2
					text: name
				}
				// Horizontal rule
				Kirigami.Separator {
					Layout.fillWidth: true
					visible: description.length > 0
				}
				// Labels contain text
				Controls.Label {
					Layout.fillWidth: true
					// Word wrap makes text stay within box and shift with size
					wrapMode: Text.WordWrap
					text: description
					visible: description.length > 0
				}
			}
			Controls.Button {
				Layout.alignment: Qt.AlignRight
				// Column spanning within grid layout (vertically in this case)
				Layout.columnSpan: 2
				text: i18n("Edit")
				onClicked: openPopulateSheet("edit", index, name, description, date = new Date(date).toISOString().slice(0,10))
			}
		}
	}
}