/**
 *  LogarithmPlotter - Create graphs with logarithm scales.
 *  Copyright (C) 2021  Ad5001
 * 
 *  This program 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.
 * 
 *  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 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 <https://www.gnu.org/licenses/>.
 */

import QtQuick.Controls 2.12
import QtQuick 2.12 

Item {
    id: control
    height: 30
    
    signal changed(string newValue)
    
    property bool isInt: false
    property bool isDouble: false
    property double min: -1
    property string label
    property string defValue
    property string icon: ""
    
    Icon {
        id: iconLabel
        anchors.top: parent.top
        anchors.topMargin: icon == "" ? 0 : 3
        source: control.visible ? control.icon : ""
        width: height
        height: icon == "" || !visible ? 0 : 24
        color: sysPalette.windowText
    }
    
    Label {
        id: labelItem
        anchors.left: iconLabel.right
        anchors.leftMargin: icon == "" ? 0 : 5
        height: parent.height
        anchors.top: parent.top
        verticalAlignment: TextInput.AlignVCenter
        //color: sysPalette.windowText
        text: control.label +": "
    }
    
        
    TextField {
        id: input
        anchors.top: parent.top
        anchors.left: labelItem.right
        anchors.leftMargin: 5
        width: control.width - labelItem.width - iconLabel.width - 10
        height: parent.height
        verticalAlignment: TextInput.AlignVCenter
        horizontalAlignment: TextInput.AlignHCenter
        color: sysPalette.windowText
        focus: true
        text: control.defValue
        selectByMouse: true
        onEditingFinished: {
            var value = text
            if(control.isInt) value = Math.max(control.min,parseInt(value).toString()=="NaN"?control.min:parseInt(value))
            if(control.isDouble) value = Math.max(control.min,parseFloat(value).toString()=="NaN"?control.min:parseFloat(value))
            if(value != "" && value.toString() != defValue) {
                control.changed(value)
                defValue = value.toString()
            }
        }
    }
    
    Button {
        text: "α"
        anchors.right: parent.right
        anchors.rightMargin: 5
        anchors.verticalCenter: parent.verticalCenter
        width: 20
        height: width
        visible: !isInt && !isDouble
        onClicked: insertPopup.open()
    }
    
    Popup {
        id: insertPopup
        x: input.x
        y: input.y + input.height
        width: 200
        height: insertGrid.insertChars/insertGrid.columns
        modal: true
        focus: true
        closePolicy: Popup.CloseOnEscape | Popup.CloseOnPressOutsideParent
        
        Grid {
            id: insertGrid
            width: parent.width
            columns: 10
            
            property var insertChars: [
                "α","β","γ","δ","ε","ζ","η","θ","κ","λ",
                "μ","ξ","ρ","ς","σ","τ","φ","χ","ψ","ω",
                "Γ","Δ","Θ","Λ","Ξ","Π","Σ","Φ","Ψ","Ω",
                "∞","≠","≥","≤","∧","∨","∩","∪","⊂","⊃",
                "⊕","⊗","∈","∀","∃","∂"," "," "," "," ",
                "¹","²","³","⁴","⁵","⁶","⁷","⁸","⁹","⁰",
                "₁","₂","₃","₄","₅","₆","₇","₈","₉","₀",
                "ₐ","ₑ","ₒ","ₓ","ₔ","ₕ","ₖ","ₗ","ₘ","ₙ",
                "ₚ","ₛ","ₜ","₊","₋","₌","₍","₎"," "," "

            ]
            Repeater {
                model: parent.insertChars.length
                
                Button {
                    id: insertBtn
                    width: insertGrid.width/insertGrid.columns
                    height: width
                    text: insertGrid.insertChars[modelData]
                    flat: text == " "
                    
                    onClicked: {
                        input.insert(input.cursorPosition, insertGrid.insertChars[modelData])
                        insertPopup.close()
                        input.focus = true
                    }
                }
            }
        }
    }
}