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/*
* Copyright (C) 2012-2015 Canonical, Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 3.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import QtQuick 2.4
VisualDataModel {
id: visualModel
groups: [
VisualDataGroup {
id: selectedGroup
name: "selected"
}
]
property Item currentSwipedItem: null
property alias selectedItems: selectedGroup
// This property holds if the selection will accept multiple items or single items
property bool multipleSelection: true
// This property holds a list with the index of selected items
property string state: ""
readonly property bool isInSelectionMode: state === "selection"
function updateSwipeState(item) {
if (item.swipping) {
return;
}
if (item.swipeState !== "Normal") {
if (currentSwipedItem !== item) {
if (currentSwipedItem) {
currentSwipedItem.resetSwipe();
}
currentSwipedItem = item;
} else if (item.swipeState !== "Normal" && currentSwipedItem === item) {
currentSwipedItem = null;
}
}
}
/*!
This handler is called when the selection mode is finished without be canceled
*/
signal selectionDone(var items)
/*!
This handler is called when the selection mode is canceled
*/
signal selectionCanceled()
/*!
Start the selection mode on the list view.
*/
function startSelection() {
state = "selection";
}
/*!
Check if the item is selected
Returns true if the item was marked as selected or false if the item is unselected
*/
function isSelected(item) {
if (item && item.VisualDataModel) {
return (item.VisualDataModel.inSelected === true);
} else {
return false;
}
}
/*!
Mark the item as selected
Returns true if the item was marked as selected or false if the item is already selected
*/
function selectItem(item) {
if (item.VisualDataModel.inSelected) {
return false;
} else {
if (!multipleSelection) {
clearSelection();
}
item.VisualDataModel.inSelected = true;
return true;
}
}
/*!
Remove the index from the selected list
*/
function deselectItem(item) {
var result = false;
if (item.VisualDataModel.inSelected) {
item.VisualDataModel.inSelected = false;
result = true;
}
return result;
}
/*!
Finish the selection mode with sucess
*/
function endSelection() {
selectionDone(visualModel.selectedItems);
clearSelection();
state = "";
}
/*!
Cancel the selection
*/
function cancelSelection() {
selectionCanceled();
clearSelection();
state = "";
}
/*!
Remove any selected item from the selection list
*/
function clearSelection() {
if (selectedItems.count > 0) {
selectedItems.remove(0, selectedItems.count);
}
}
/*!
Select all items in the list
*/
function selectAll() {
if (multipleSelection && selectedItems.count < visualModel.items.count) {
visualModel.items.addGroups(0, visualModel.items.count, ["selected"] );
} else {
clearSelection();
}
}
function getModelIndexFromIndex(index) {
return visualModel.modelIndex(index);
}
}
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