import QtQuick                  2.2
import QtQuick.Controls         1.2
import QtQuick.Controls.Styles  1.2
import QtQuick.Dialogs          1.2

import QGroundControl.ScreenTools   1.0
import QGroundControl.Vehicle       1.0
import QGroundControl.Controls      1.0
import QGroundControl.FactControls  1.0
import QGroundControl.Palette       1.0


/// Mission item edit control
Rectangle {
    id: _root

    height: editorLoader.y + editorLoader.height + (_margin * 2)
    color:  missionItem.isCurrentItem ? qgcPal.buttonHighlight : qgcPal.windowShade
    radius: _radius

    property var    missionItem ///< MissionItem associated with this editor
    property bool   readOnly    ///< true: read only view, false: full editing view
    property var    qgcView     ///< QGCView control used for showing dialogs

    signal clicked
    signal remove
    signal insert(int i)
    signal moveHomeToMapCenter

    readonly property real  _editFieldWidth:    ScreenTools.defaultFontPixelWidth * 16
    readonly property real  _margin:            ScreenTools.defaultFontPixelWidth / 2
    readonly property real  _radius:            ScreenTools.defaultFontPixelWidth / 2
    property color          _outerTextColor:    missionItem.isCurrentItem ? "black" : qgcPal.text


    QGCPalette {
        id: qgcPal
        colorGroupEnabled: enabled
    }


    MouseArea {
        anchors.fill:   parent
        visible:        !missionItem.isCurrentItem
        onClicked:      _root.clicked()
    }

    QGCLabel {
        id:                     label
        anchors.verticalCenter: commandPicker.verticalCenter
        anchors.leftMargin:     _margin
        anchors.left:           parent.left
        text:                   missionItem.sequenceNumber == 0 ? "H" : missionItem.sequenceNumber
        color:                  _outerTextColor
    }

    Image {
        id:                     hamburger
        anchors.rightMargin:    ScreenTools.defaultFontPixelWidth
        anchors.right:          parent.right
        anchors.verticalCenter: commandPicker.verticalCenter
        width:                  commandPicker.height
        height:                 commandPicker.height
        source:                 "qrc:/qmlimages/Hamburger.svg"
        visible:                missionItem.isCurrentItem && missionItem.sequenceNumber != 0

        MouseArea {
            anchors.fill:   parent
            onClicked:      hamburgerMenu.popup()

            Menu {
                id: hamburgerMenu

                MenuItem {
                    text:           "Insert"
                    onTriggered:    insert(missionItem.sequenceNumber)
                }

                MenuItem {
                    text:           "Delete"
                    onTriggered:    remove()
                }

                MenuSeparator {
                    visible: !missionItem.simpleItem
                }

                MenuItem {
                    text:       "Show all values"
                    checkable:  true
                    checked:    missionItem.rawEdit
                    visible:    !missionItem.simpleItem

                    onTriggered:    {
                        if (missionItem.rawEdit) {
                            if (missionItem.friendlyEditAllowed) {
                                missionItem.rawEdit = false
                            } else {
                                qgcView.showMessage("Mission Edit", "You have made changes to the mission item which cannot be shown in Simple Mode", StandardButton.Ok)
                            }
                        } else {
                            missionItem.rawEdit = true
                        }
                        checked = missionItem.rawEdit
                    }
                }
            }
        }
    }

    QGCButton {
        id:                     commandPicker
        anchors.leftMargin:     ScreenTools.defaultFontPixelWidth * 2
        anchors.rightMargin:    ScreenTools.defaultFontPixelWidth
        anchors.left:           label.right
        anchors.right:          hamburger.left
        visible:                missionItem.sequenceNumber != 0 && missionItem.isCurrentItem && !missionItem.rawEdit && missionItem.simpleItem
        text:                   missionItem.commandName

        Component {
            id: commandDialog

            MissionCommandDialog {
                missionItem: _root.missionItem
            }
        }

        onClicked:              qgcView.showDialog(commandDialog, "Select Mission Command", qgcView.showDialogDefaultWidth, StandardButton.Cancel)
    }

    QGCLabel {
        anchors.fill:       commandPicker
        visible:            missionItem.sequenceNumber == 0 || !missionItem.isCurrentItem || !missionItem.simpleItem
        verticalAlignment:  Text.AlignVCenter
        text:               missionItem.sequenceNumber == 0 ? "Home Position" : (missionItem.simpleItem ? missionItem.commandName : "Survey")
        color:              _outerTextColor
    }

    Loader {
        id:                 editorLoader
        anchors.leftMargin: _margin
        anchors.topMargin:  _margin
        anchors.left:       parent.left
        anchors.top:        commandPicker.bottom
        sourceComponent:    missionItem.simpleItem ? simpleMissionItemEditor : complexMissionItemEditor

        /// How wide the loaded component should be
        property real availableWidth: _root.width - (_margin * 2)
    }

    Component {
        id: valuesComponent

        Rectangle {
            id:                 valuesRect
            height:             valuesItem.height
            color:              qgcPal.windowShadeDark
            visible:            missionItem.isCurrentItem
            radius:             _radius

            Item {
                id:                 valuesItem
                anchors.margins:    _margin
                anchors.left:       parent.left
                anchors.right:      parent.right
                anchors.top:        parent.top
                height:             valuesColumn.height + (_margin * 2)

                Column {
                    id:             valuesColumn
                    anchors.left:   parent.left
                    anchors.right:  parent.right
                    anchors.top:    parent.top
                    spacing:        _margin

                    QGCLabel {
                        width:      parent.width
                        wrapMode:   Text.WordWrap
                        text:       missionItem.sequenceNumber == 0 ?
                                        "Planned home position." :
                                        (missionItem.rawEdit ?
                                             "Provides advanced access to all commands/parameters. Be very careful!" :
                                             missionItem.commandDescription)
                    }

                    Repeater {
                        model: missionItem.comboboxFacts

                        Item {
                            width:  valuesColumn.width
                            height: comboBoxFact.height

                            QGCLabel {
                                id:                 comboBoxLabel
                                anchors.baseline:   comboBoxFact.baseline
                                text:               object.name
                                visible:            object.name != ""
                            }

                            FactComboBox {
                                id:             comboBoxFact
                                anchors.right:  parent.right
                                width:          comboBoxLabel.visible ? _editFieldWidth : parent.width
                                indexModel:     false
                                model:          object.enumStrings
                                fact:           object
                            }
                        }
                    }

                    Repeater {
                        model: missionItem.textFieldFacts

                        Item {
                            width:  valuesColumn.width
                            height: textField.height

                            QGCLabel {
                                id:                 textFieldLabel
                                anchors.baseline:   textField.baseline
                                text:               object.name
                            }

                            FactTextField {
                                id:             textField
                                anchors.right:  parent.right
                                width:          _editFieldWidth
                                showUnits:      true
                                fact:           object
                                visible:        !_root.readOnly
                            }

                            FactLabel {
                                anchors.baseline:   textFieldLabel.baseline
                                anchors.right:      parent.right
                                fact:               object
                                visible:            _root.readOnly
                            }
                        }
                    }

                    Repeater {
                        model: missionItem.checkboxFacts

                        FactCheckBox {
                            text:   object.name
                            fact:   object
                        }
                    }

                    QGCButton {
                        text:       "Move Home to map center"
                        visible:    missionItem.homePosition
                        onClicked:  moveHomeToMapCenter()
                        anchors.horizontalCenter: parent.horizontalCenter
                    }
                } // Column
            } // Item
        } // Rectangle

    }

    Component {
        id: simpleMissionItemEditor

        Item {
            id:     innerItem
            width:  availableWidth
            height: _showValues ? valuesLoader.y + valuesLoader.height : valuesLoader.y

            property bool _showValues: missionItem.isCurrentItem

            Loader {
                id:                 valuesLoader
                anchors.left:       parent.left
                anchors.right:      parent.right
                sourceComponent:    _showValues ? valuesComponent : undefined
            }
        } // Item
    } // Component - simpleMissionItemEditor

    Component {
        id: complexMissionItemEditor

        Rectangle {
            id:         outerRect
            height:     editorColumn.height + (_margin * 2)
            width:      availableWidth
            color:      qgcPal.windowShadeDark
            radius:     _radius

            property bool addPointsMode: false

            Column {
                id:                 editorColumn
                anchors.margins:    _margin
                anchors.top:        parent.top
                anchors.left:       parent.left
                width:              availableWidth
                spacing:            _margin

                Connections {
                    target: editorMap

                    onMapClicked: {
                        if (addPointsMode) {
                            missionItem.addPolygonCoordinate(coordinate)
                        }
                    }
                }

                QGCLabel {
                    text:       "Fly a grid pattern over a defined area."
                    wrapMode:   Text.WordWrap
                }

                QGCButton {
                    text: addPointsMode ? "Finished" : "Draw Polygon"
                    onClicked: {
                        if (addPointsMode) {
                            addPointsMode = false
                        } else {
                            missionItem.clearPolygon()
                            addPointsMode = true
                        }
                    }
                }
            }
        }
    } // Component - complexMissionItemEditor

} // Rectangle