main.qml

import QtQuick 2.0
import QtQuick.Window 2.0
import QtQuick.Dialogs 1.1

Window {
    id: root
    title: Qt.application.name
    width: 400
    height: 200
    minimumWidth: 400
    minimumHeight: 200
    maximumWidth: 800
    maximumHeight: 400

    MessageDialog {
        id: confirmDialog
        title: root.title
        icon: StandardIcon.Question
        text: ''
        informativeText: ''
        detailedText: ''
        standardButtons: StandardButton.Ok | StandardButton.Cancel
        onAccepted: xdgUrlHandler.process()
        onRejected: Qt.quit()
    }

    MessageDialog {
        id: infoDialog
        title: root.title
        icon: StandardIcon.Information
        text: ''
        informativeText: ''
        detailedText: ''
        standardButtons: StandardButton.Ok
        onAccepted: Qt.quit()
    }

    MessageDialog {
        id: errorDialog
        title: root.title
        icon: StandardIcon.Warning
        text: ''
        informativeText: ''
        detailedText: ''
        standardButtons: StandardButton.Ok
        onAccepted: Qt.quit()
    }

    MessageDialog {
        id: progressDialog
        title: root.title
        contentItem: Rectangle {
            implicitWidth: 400
            implicitHeight: 200
        }
    }

    Component.onCompleted: {
        var metadata = JSON.parse(xdgUrlHandler.getMetadata());
        var primaryMessages = {
            'success_download': 'Download successfull',
            'success_install': 'Installation successfull',
            'error_validation': 'Validation error',
            'error_network': 'Network error',
            'error_filetype': 'File type error',
            'error_save': 'Saving file failed',
            'error_install': 'Installation failed'
        };

        xdgUrlHandler.started.connect(function() {
            progressDialog.open();
        });

        xdgUrlHandler.finished.connect(function(result) {
            progressDialog.close();
            result = JSON.parse(result);
            infoDialog.text = primaryMessages[result.status];
            infoDialog.informativeText = metadata.filename;
            infoDialog.detailedText = result.message;
            infoDialog.open();
        });

        xdgUrlHandler.error.connect(function(result) {
            progressDialog.close();
            result = JSON.parse(result);
            errorDialog.text = primaryMessages[result.status];
            errorDialog.informativeText = metadata.filename;
            errorDialog.detailedText = result.message;
            errorDialog.open();
        });

        xdgUrlHandler.downloadProgress.connect(function(received, total) {
            console.log([received, total]);
        });

        if (xdgUrlHandler.isValid()) {
            confirmDialog.text = 'Do you want to ' + metadata.command + '?';
            confirmDialog.informativeText = metadata.filename;
            confirmDialog.detailedText = 'URL: ' + metadata.url + '\n\n'
                    + 'File: ' + metadata.filename + '\n\n'
                    + 'Type: ' + metadata.type;
            confirmDialog.open();
        }
        else {
            errorDialog.text = 'Validation error';
            errorDialog.detailedText = 'Invalid XDG-URL ' + xdgUrlHandler.getXdgUrl();
            errorDialog.open();
        }
    }
}