/*
 *   Copyright 2014 Aaron Seigo <aseigo@kde.org>
 *   Copyright 2012 Marco Martin <notmart@gmail.com>
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as
 *   published by the Free Software Foundation; either version 2, or
 *   (at your option) any later version.
 *
 *   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 Library General Public License for more details
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this program; if not, write to the
 *   Free Software Foundation, Inc.,
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

import QtQuick 2.6
import QtGraphicalEffects 1.0
import org.kde.plasma.core 2.0 as PlasmaCore
import org.kde.plasma.shell 2.0 as Shell
import org.kde.plasma.components 2.0 as PlasmaComponents
import org.kde.plasma.workspace.components 2.0 as PlasmaWorkspace
import org.kde.kquickcontrolsaddons 2.0
import org.kde.activities 0.1 as Activities
import "../components"

Item {
    id: root
    width: 1080
    height: 1920

    property Item containment;
    property Item wallpaper;
    property int notificationId: 0;
    property int buttonHeight: width/4
    property bool containmentsEnterFromRight: true

    //NOTE: this 
    PathView {
        id: activitiesRepresentation
        model: Activities.ActivityModel {
            id: activityModel
        }
        width: 10
        height: 10
        cacheItemCount: 999//count
        delegate: Item {
            Connections {
                target: activitiesRepresentation
                onCurrentIndexChanged: {
                    if (index == activitiesRepresentation.currentIndex) {
                        activityModel.setCurrentActivity(model.id, function(){});
                    }
                }
            }
        }
    }

    ActivityHandle {
        mirrored: true
    }
    ActivityHandle {
        mirrored: false
    }

    function toggleWidgetExplorer(containment) {
        console.log("Widget Explorer toggled");
        if (widgetExplorerStack.source != "") {
            widgetExplorerStack.source = "";
        } else {
            widgetExplorerStack.setSource(Qt.resolvedUrl("../explorer/WidgetExplorer.qml"), {"containment": containment})
        }
    }

    Loader {
        id: widgetExplorerStack
        z: 99
        asynchronous: true
        y: containment ? containment.availableScreenRect.y : 0
        height: containment ? containment.availableScreenRect.height : parent.height
        width: parent.width
        
        onLoaded: {
            if (widgetExplorerStack.item) {
                item.closed.connect(function() {
                    widgetExplorerStack.source = ""
                });
            }
        }
    }

    onContainmentChanged: {
        if (containment == null) {
            return;
        }

        if (switchAnim.running) {
            //If the animation was still running, stop it and reset
            //everything so that a consistent state can be kept
            switchAnim.running = false;
            internal.newContainment.visible = false;
            internal.oldContainment.visible = false;
            internal.oldContainment = null;
        }

        internal.newContainment = containment;
        containment.visible = true;

        if (internal.oldContainment != null && internal.oldContainment != containment) {
            switchAnim.running = true;
        } else {
            containment.anchors.left = root.left;
            containment.anchors.top = root.top;
            containment.anchors.right = root.right;
            containment.anchors.bottom = root.bottom;
            if (internal.oldContainment) {
                internal.oldContainment.visible = false;
            }
            internal.oldContainment = containment;
        }
    }

    //some properties that shouldn't be accessible from elsewhere
    QtObject {
        id: internal;

        property Item oldContainment: null;
        property Item newContainment: null;
    }

    SequentialAnimation {
        id: switchAnim
        ScriptAction {
            script: {
                if (containment) {
                    containment.anchors.left = undefined;
                    containment.anchors.top = undefined;
                    containment.anchors.right = undefined;
                    containment.anchors.bottom = undefined;
                    containment.z = 1;
                    containment.x = root.containmentsEnterFromRight ? root.width : -root.width;
                }
                if (internal.oldContainment) {
                    internal.oldContainment.anchors.left = undefined;
                    internal.oldContainment.anchors.top = undefined;
                    internal.oldContainment.anchors.right = undefined;
                    internal.oldContainment.anchors.bottom = undefined;
                    internal.oldContainment.z = 0;
                    internal.oldContainment.x = 0;
                }
            }
        }
        ParallelAnimation {
            NumberAnimation {
                target: internal.oldContainment
                properties: "x"
                to: internal.newContainment != null ? (root.containmentsEnterFromRight ? -root.width : root.width) : 0
                duration: 400
                easing.type: Easing.InOutQuad
            }
            NumberAnimation {
                target: internal.newContainment
                properties: "x"
                to: 0
                duration: units.longDuration
                easing.type: Easing.InOutQuad
            }
        }
        ScriptAction {
            script: {
                if (internal.oldContainment) {
                    internal.oldContainment.visible = false;
                }
                if (containment) {
                    containment.anchors.left = root.left;
                    containment.anchors.top = root.top;
                    containment.anchors.right = root.right;
                    containment.anchors.bottom = root.bottom;
                    internal.oldContainment = containment;
                }
            }
        }
    }

    //pass the focus to the containment, so it can react to homescreen activate/inactivate
    Connections {
        target: desktop
        onActiveChanged: {
            containment.focus = desktop.active;
        }
    }

    Loader {
        id: pinOverlay
        anchors {
            fill: parent
            topMargin: containment.availableScreenRect.y
            bottomMargin: parent.height - containment.availableScreenRect.height - containment.availableScreenRect.y
        }
        z: 222
        source: Qt.resolvedUrl("Pin.qml")
    }

    Component.onCompleted: {
        //configure the view behavior
        if (desktop) {
            desktop.width = width;
            desktop.height = height;
        }
    }
}