harbour-seaprint/qml/components/RangeSetting.qml

import QtQuick 2.6
import Sailfish.Silica 1.0

Setting {
    property int high
    property int choice_low: 1
    property int choice_high: 0

    property bool suppressChange: false

    function update_choice() {
        if (choice_high == 0)
        {
            choice = undefined;
        }
        else
        {
            choice = new Object({low: choice_low, high: choice_high});
        }
    }

    onChoice_highChanged: {
        if(!suppressChange)
        {
            if(choice_high < choice_low)
            {
                low_slider.value = choice_high > 0 ? choice_high : 1;
            }
            update_choice()
        }
    }
    onChoice_lowChanged: {
        if(!suppressChange)
        {
            if(choice_low > choice_high)
            {
                high_slider.value = choice_low
            }
            update_choice()
        }
    }

    onChoiceChanged: {
        if(choice == undefined)
        {
            console.log("choice unset");
            suppressChange = true;
            low_slider.value = low_slider.minimumValue;
            high_slider.value = high_slider.minimumValue;
            suppressChange = false;
        }
    }

    displayValue: choice == undefined ? qsTr("all") : ""+choice.low+" - "+choice.high

    menu: ContextMenu {
        MenuItem {
            Slider
            {
                id: low_slider
                minimumValue: 1
                maximumValue: high > 50 ? 50 : high
                width: parent.width
                stepSize: 1
                onValueChanged:
                {
                    choice_low = value;
                }
            }
            IconButton
            {
                anchors.right: parent.right
                icon.source: "image://theme/icon-s-edit"
                onClicked: {var dialog = pageStack.push(Qt.resolvedUrl("IntegerInputDialog.qml"),
                                                        {value: choice, title: prettyName,
                                                         min: 1, max: high});
                            dialog.accepted.connect(function() {
                                choice_low = dialog.value;
                            })
                }
            }

        }

        MenuItem {
            Slider
            {
                id: high_slider
                minimumValue: 0
                maximumValue: high > 50 ? 50 : high
                width: parent.width
                stepSize: 1
                onValueChanged:
                {
                    choice_high = value;
                }
            }
            IconButton
            {
                anchors.right: parent.right
                icon.source: "image://theme/icon-s-edit"
                onClicked: {var dialog = pageStack.push(Qt.resolvedUrl("IntegerInputDialog.qml"),
                                                        {value: choice, title: prettyName,
                                                         min: 1, max: high});
                            dialog.accepted.connect(function() {
                                choice_high = dialog.value;
                            })
                }
            }

        }

    }


}