~pkunal-parmar/ubuntu-calendar-app/Minor-Performance

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/*
 * Copyright (C) 2013-2014 Canonical Ltd
 *
 * This file is part of Ubuntu Calendar App
 *
 * Ubuntu Calendar App is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3 as
 * published by the Free Software Foundation.
 *
 * Ubuntu Calendar App 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 2.3
import Ubuntu.Components 1.1
import "dateExt.js" as DateExt
import "ViewType.js" as ViewType

Page{
    id: dayViewPage
    objectName: "dayViewPage"

    property var currentDay: new Date()
    property bool isCurrentPage: false

    signal dateSelected(var date);

    Keys.forwardTo: [dayViewPath]
    flickable: null

    Action {
        id: calendarTodayAction
        objectName:"todaybutton"
        iconName: "calendar-today"
        text: i18n.tr("Today")
        onTriggered: {
            currentDay = new Date()
        }
    }

    head {
        actions: [
            calendarTodayAction,
            commonHeaderActions.newEventAction,
            commonHeaderActions.showCalendarAction,
            commonHeaderActions.reloadAction
        ]

        contents: Label {
            id:monthYear
            objectName:"monthYearLabel"
            fontSize: "x-large"
            text: i18n.tr(currentDay.toLocaleString(Qt.locale(),i18n.tr("MMMM yyyy")))
            font.capitalization: Font.Capitalize
        }
    }

    Column {
        anchors.fill: parent
        anchors.topMargin: units.gu(1)
        spacing: units.gu(1)

        TimeLineHeader{
            id: dayHeader
            objectName: "dayHeader"
            type: ViewType.ViewTypeDay
            currentDay: dayViewPage.currentDay

            onDateSelected: {
                dayViewPage.currentDay = date;
                dayViewPage.dateSelected(date);
            }

            onCurrentDayChanged: {
                date = dayViewPage.currentDay.weekStart(Qt.locale().firstDayOfWeek);
            }

            function nextDay() {
                if(currentDay >= date.addDays(7)) {
                    date = dayViewPage.currentDay.weekStart(Qt.locale().firstDayOfWeek);
                    dayHeader.incrementCurrentIndex();
                }
            }

            function previousDay() {
                if( currentDay < date) {
                    date = dayViewPage.currentDay.weekStart(Qt.locale().firstDayOfWeek);
                    dayHeader.decrementCurrentIndex();
                }
            }
        }

        PathViewBase{
            id: dayViewPath
            objectName: "dayViewPath"

            property var startDay: currentDay
            //This is used to scroll all view together when currentItem scrolls
            property var childContentY;

            width: parent.width
            height: dayViewPage.height - dayViewPath.y

            onNextItemHighlighted: {
                //next day
                currentDay = currentDay.addDays(1);
                dayHeader.nextDay();
            }

            onPreviousItemHighlighted: {
                //previous day
                currentDay = currentDay.addDays(-1);
                dayHeader.previousDay();
            }

            delegate: TimeLineBaseComponent {
                id: timeLineView
                objectName: "DayComponent-"+index

                type: ViewType.ViewTypeDay

                width: parent.width
                height: parent.height
                z: index == dayViewPath.currentIndex ? 2 : 1
                isActive: true

                Connections{
                    target: dayViewPage
                    onIsCurrentPageChanged:{
                        if(dayViewPage.isCurrentPage){
                            timeLineView.scrollToCurrentTime();
                        }
                    }
                }

                //get contentY value from PathView, if its not current Item
                Binding{
                    target: timeLineView
                    property: "contentY"
                    value: dayViewPath.childContentY;
                    when: !timeLineView.PathView.isCurrentItem
                }

                //set PathView's contentY property, if its current item
                Binding{
                    target: dayViewPath
                    property: "childContentY"
                    value: contentY
                    when: timeLineView.PathView.isCurrentItem
                }

                contentInteractive: timeLineView.PathView.isCurrentItem

                startDay: dayViewPath.startDay.addDays(dayViewPath.indexType(index))
            }
        }
    }
}