/*=====================================================================

QGroundControl Open Source Ground Control Station

(c) 2009, 2015 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>

This file is part of the QGROUNDCONTROL project

QGROUNDCONTROL 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, either version 3 of the License, or
(at your option) any later version.

QGROUNDCONTROL 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 QGROUNDCONTROL. If not, see <http://www.gnu.org/licenses/>.

======================================================================*/

import QtQuick          2.5
import QtQuick.Controls 1.2
import QtQuick.Dialogs  1.2
import QtPositioning    5.2

import QGroundControl                       1.0
import QGroundControl.Palette               1.0
import QGroundControl.Controls              1.0
import QGroundControl.FlightDisplay         1.0
import QGroundControl.ScreenTools           1.0
import QGroundControl.MultiVehicleManager   1.0
import QGroundControl.QGCPositionManager   1.0

/// Inner common QML for mainWindow
Item {
    id: mainWindow

    signal reallyClose

    readonly property string _planViewSource:   "MissionEditor.qml"
    readonly property string _setupViewSource:  "SetupView.qml"

    QGCPalette { id: qgcPal; colorGroupEnabled: true }

    property real   tbHeight:           ScreenTools.isMobile ? (ScreenTools.isTinyScreen ? (mainWindow.width * 0.0666) : (mainWindow.width * 0.05)) : ScreenTools.defaultFontPixelSize * 4
    property int    tbCellHeight:       tbHeight * 0.75
    property real   tbSpacing:          ScreenTools.isMobile ? width * 0.00824 : 9.54
    property real   tbButtonWidth:      tbCellHeight * 1.35
    property real   menuButtonWidth:    (tbButtonWidth * 2) + (tbSpacing * 4) + 1
    property var    gcsPosition:        QtPositioning.coordinate()  // Starts as invalid coordinate
    property var    currentPopUp:       null
    property real   currentCenterX:     0
    property var    activeVehicle:      QGroundControl.multiVehicleManager.activeVehicle
    property string formatedMessage:    activeVehicle ? activeVehicle.formatedMessage : ""

    onHeightChanged: {
        //-- We only deal with the available height if within the Fly or Plan view
        if(!setupViewLoader.visible) {
            ScreenTools.availableHeight = parent.height - toolBar.height
        }
    }

    function showFlyView() {
        if(currentPopUp) {
            currentPopUp.close()
        }
        ScreenTools.availableHeight = parent.height - toolBar.height
        flightView.visible          = true
        setupViewLoader.visible     = false
        planViewLoader.visible      = false
        toolBar.checkFlyButton()
    }

    function showPlanView() {
        if(currentPopUp) {
            currentPopUp.close()
        }
        if (planViewLoader.source   != _planViewSource) {
            planViewLoader.source   = _planViewSource
        }
        ScreenTools.availableHeight = parent.height - toolBar.height
        flightView.visible          = false
        setupViewLoader.visible     = false
        planViewLoader.visible      = true
        toolBar.checkPlanButton()
    }

    function showSetupView() {
        if(currentPopUp) {
            currentPopUp.close()
        }
        //-- In setup view, the full height is available. Set to 0 so it is ignored.
        ScreenTools.availableHeight = 0
        if (setupViewLoader.source  != _setupViewSource) {
            setupViewLoader.source  = _setupViewSource
        }
        flightView.visible          = false
        setupViewLoader.visible     = true
        planViewLoader.visible      = false
        toolBar.checkSetupButton()
    }

    // The following are use for unit testing only

    function showSetupFirmware() {
        setupViewLoader.item.showFirmwarePanel()
    }

    function showSetupParameters() {
        setupViewLoader.item.showParametersPanel()
    }

    function showSetupSummary() {
        setupViewLoader.item.showSummaryPanel()
    }

    function showSetupVehicleComponent(vehicleComponent) {
        setupViewLoader.item.showVehicleComponentPanel(vehicleComponent)
    }

    /// Start the process of closing QGroundControl. Prompts the user are needed.
    function attemptWindowClose() {
        unsavedMissionCloseDialog.check()
    }

    function finishCloseProcess() {
        QGroundControl.linkManager.shutdown()
        // The above shutdown causes a flurry of activity as the vehicle components are removed. This in turn
        // causes the Windows Version of Qt to crash if you allow the close event to be accepted. In order to prevent
        // the crash, we ignore the close event and setup a delayed timer to close the window after things settle down.
        delayedWindowCloseTimer.start()
    }

    MessageDialog {
        id:                 unsavedMissionCloseDialog
        title:              qsTr("QGroundControl close")
        text:               qsTr("You have a mission edit in progress which has not been saved/sent. If you close you will lose changes. Are you sure you want to close?")
        standardButtons:    StandardButton.Yes | StandardButton.No
        modality:           Qt.ApplicationModal
        visible:            false

        onYes: activeConnectionsCloseDialog.check()

        function check() {
            if (planViewLoader.item && planViewLoader.item.syncNeeded) {
                unsavedMissionCloseDialog.open()
            } else {
                activeConnectionsCloseDialog.check()
            }
        }
    }

    MessageDialog {
        id:                 activeConnectionsCloseDialog
        title:              qsTr("QGroundControl close")
        text:               qsTr("There are still active connections to vehicles. Do you want to disconnect these before closing?")
        standardButtons:    StandardButton.Yes | StandardButton.Cancel
        modality:           Qt.ApplicationModal
        visible:            false
        onYes:              finishCloseProcess()

        function check() {
            if (QGroundControl.multiVehicleManager.activeVehicle) {
                activeConnectionsCloseDialog.open()
            } else {
                finishCloseProcess()
            }
        }
    }

    Timer {
        id:         delayedWindowCloseTimer
        interval:   1500
        running:    false
        repeat:     false

        onTriggered: {
            mainWindow.reallyClose()
        }
    }


    //-- Detect tablet position
    Connections {
        target: QGroundControl.qgcPositionManger

        onLastPositionUpdated: {
            if(valid) {
                if(lastPosition.latitude) {
                    if(Math.abs(lastPosition.latitude)  > 0.001) {
                        if(lastPosition.longitude) {
                            if(Math.abs(lastPosition.longitude)  > 0.001) {
                                gcsPosition = QtPositioning.coordinate(lastPosition.latitude,lastPosition.longitude)
                            }
                        }
                    }
                }
            }
        }
    }

    property var messageQueue: []

    function showMessage(message) {
        if(criticalMmessageArea.visible) {
            messageQueue.push(message)
        } else {
            criticalMessageText.text = message
            criticalMmessageArea.visible = true
        }
    }

    function showLeftMenu() {
        if(!leftPanel.visible) {
            leftPanel.visible = true
            leftPanel.item.animateShowDialog.start()
        } else if(leftPanel.visible && !leftPanel.item.animateShowDialog.running) {
            //-- If open, toggle it closed
            hideLeftMenu()
        }
    }

    function hideLeftMenu() {
        if(leftPanel.visible && !leftPanel.item.animateHideDialog.running) {
            leftPanel.item.animateHideDialog.start()
        }
    }

    onFormatedMessageChanged: {
        if(messageArea.visible) {
            messageText.append(formatedMessage)
            //-- Hack to scroll down
            messageFlick.flick(0,-500)
        }
    }

    function showMessageArea() {
        if(currentPopUp) {
            currentPopUp.close()
        }
        if(QGroundControl.multiVehicleManager.activeVehicleAvailable) {
            messageText.text = activeVehicle.formatedMessages
            //-- Hack to scroll to last message
            for (var i = 0; i < activeVehicle.messageCount; i++)
                messageFlick.flick(0,-5000)
            activeVehicle.resetMessages()
        } else {
            messageText.text = qsTr("No Messages")
        }
        currentPopUp = messageArea
        messageArea.visible = true
    }

    function showPopUp(dropItem, centerX) {
        if(currentPopUp) {
            currentPopUp.close()
          }
        indicatorDropdown.centerX = centerX
        indicatorDropdown.sourceComponent = dropItem
        indicatorDropdown.visible = true
        currentPopUp = indicatorDropdown
    }

    //-- Left Settings Menu
    Loader {
        id:                 leftPanel
        anchors.fill:       parent
        visible:            false
        z:                  QGroundControl.zOrderTopMost + 100
        active:             visible
        source:             "MainWindowLeftPanel.qml"
    }

    //-- Main UI

    MainToolBar {
        id:                 toolBar
        height:             tbHeight
        anchors.left:       parent.left
        anchors.right:      parent.right
        anchors.top:        parent.top
        mainWindow:         mainWindow
        opaqueBackground:   leftPanel.visible
        isBackgroundDark:   flightView.isBackgroundDark
        z:                  QGroundControl.zOrderTopMost
        onShowSetupView:    mainWindow.showSetupView()
        onShowPlanView:     mainWindow.showPlanView()
        onShowFlyView:      mainWindow.showFlyView()
        Component.onCompleted: {
            ScreenTools.availableHeight = parent.height - toolBar.height
        }
    }

    FlightDisplayView {
        id:                 flightView
        anchors.fill:       parent
        visible:            true
    }

    Loader {
        id:                 planViewLoader
        anchors.fill:       parent
        visible:            false
    }

    Loader {
        id:                 setupViewLoader
        anchors.left:       parent.left
        anchors.right:      parent.right
        anchors.top:        toolBar.bottom
        anchors.bottom:     parent.bottom
        visible:            false
    }

    //-------------------------------------------------------------------------
    //-- Dismiss Pop Up Messages
    MouseArea {
        visible:        currentPopUp != null
        enabled:        currentPopUp != null
        anchors.fill:   parent
        onClicked: {
            currentPopUp.close()
        }
    }

    //-------------------------------------------------------------------------
    //-- Indicator Drop Down Info
    Loader {
        id: indicatorDropdown
        visible: false
        property real centerX: 0
        function close() {
            sourceComponent = null
            mainWindow.currentPopUp = null
        }
    }

    //-------------------------------------------------------------------------
    //-- System Message Area
    Rectangle {
        id:                 messageArea

        function close() {
            currentPopUp = null
            messageText.text    = ""
            messageArea.visible = false
        }

        width:              mainWindow.width  * 0.5
        height:             mainWindow.height * 0.5
        color:              Qt.rgba(0,0,0,0.8)
        visible:            false
        radius:             ScreenTools.defaultFontPixelHeight * 0.5
        border.color:       qgcPal.text
        border.width:       2
        anchors.horizontalCenter:   parent.horizontalCenter
        anchors.top:                parent.top
        anchors.topMargin:          tbHeight + ScreenTools.defaultFontPixelHeight
        QGCFlickable {
            id:                 messageFlick
            anchors.margins:    ScreenTools.defaultFontPixelHeight
            anchors.fill:       parent
            contentHeight:      messageText.height
            contentWidth:       messageText.width
            pixelAligned:       true
            clip:               true
            TextEdit {
                id:             messageText
                readOnly:       true
                textFormat:     TextEdit.RichText
                color:          "white"
                font.family:    ScreenTools.normalFontFamily
            }
        }
        //-- Dismiss System Message
        Image {
            anchors.margins:    ScreenTools.defaultFontPixelHeight
            anchors.top:        parent.top
            anchors.right:      parent.right
            width:              ScreenTools.isTinyScreen ? ScreenTools.defaultFontPixelHeight * 2.5 : ScreenTools.defaultFontPixelHeight * 1.5
            height:             width
            source:             "/res/XDelete.svg"
            fillMode:           Image.PreserveAspectFit
            mipmap:             true
            smooth:             true
            MouseArea {
                anchors.fill:   parent
                onClicked: {
                    messageArea.close()
                }
            }
        }
    }
    //-------------------------------------------------------------------------
    //-- Critical Message Area
    Rectangle {
        id: criticalMmessageArea

        function close() {
            //-- Are there messages in the waiting queue?
            if(mainWindow.messageQueue.length) {
                criticalMessageText.text = ""
                //-- Show all messages in queue
                for (var i = 0; i < mainWindow.messageQueue.length; i++) {
                    var text = mainWindow.messageQueue[i]
                    criticalMessageText.append(text)
                }
                //-- Clear it
                mainWindow.messageQueue = []
            } else {
                criticalMessageText.text = ""
                criticalMmessageArea.visible = false
            }
        }

        width:              mainWindow.width  * 0.55
        height:             ScreenTools.defaultFontPixelHeight * ScreenTools.fontHRatio * 6
        color:              qgcPal.window
        visible:            false
        radius:             ScreenTools.defaultFontPixelHeight * 0.5
        anchors.horizontalCenter:   parent.horizontalCenter
        anchors.bottom:             parent.bottom
        anchors.bottomMargin:       ScreenTools.defaultFontPixelHeight
        border.color:       qgcPal.text
        border.width:       2

        MouseArea {
            // This MouseArea prevents the Map below it from getting Mouse events. Without this
            // things like mousewheel will scroll the Flickable and then scroll the map as well.
            anchors.fill:       parent
            preventStealing:    true
            onWheel:            wheel.accepted = true
        }

        Flickable {
            id:                 criticalMessageFlick
            anchors.margins:    ScreenTools.defaultFontPixelHeight
            anchors.fill:       parent
            contentHeight:      criticalMessageText.height
            contentWidth:       criticalMessageText.width
            boundsBehavior:     Flickable.StopAtBounds
            pixelAligned:       true
            clip:               true

            TextEdit {
                id:             criticalMessageText
                width:          criticalMmessageArea.width - criticalClose.width - (ScreenTools.defaultFontPixelHeight * 2)
                anchors.left:   parent.left
                readOnly:       true
                textFormat:     TextEdit.RichText
                font.family:    ScreenTools.demiboldFontFamily
                wrapMode:       TextEdit.WordWrap
                color:          qgcPal.warningText
            }
        }

        //-- Dismiss Critical Message
        QGCColoredImage {
            id:                 criticalClose
            anchors.margins:    ScreenTools.defaultFontPixelHeight
            anchors.top:        parent.top
            anchors.right:      parent.right
            width:              ScreenTools.isTinyScreen ? ScreenTools.defaultFontPixelHeight * 2.5 : ScreenTools.defaultFontPixelHeight * 1.5
            height:             width
            source:             "/res/XDelete.svg"
            fillMode:           Image.PreserveAspectFit
            color:              qgcPal.warningText
            MouseArea {
                anchors.fill:   parent
                onClicked: {
                    criticalMmessageArea.close()
                }
            }
        }

        //-- More text below indicator
        QGCColoredImage {
            anchors.margins:    ScreenTools.defaultFontPixelHeight
            anchors.bottom:     parent.bottom
            anchors.right:      parent.right
            width:              ScreenTools.defaultFontPixelHeight * 1.5
            height:             ScreenTools.defaultFontPixelHeight * 1.5
            source:             "/res/ArrowDown.svg"
            fillMode:           Image.PreserveAspectFit
            visible:            criticalMessageText.lineCount > 5
            color:              qgcPal.warningText

            MouseArea {
                anchors.fill:   parent
                onClicked: {
                    criticalMessageFlick.flick(0,-500)
                }
            }
        }
    }
}