73 lines
2 KiB
QML
73 lines
2 KiB
QML
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/**
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* Logarithm Graph Creator - Create graphs with logarithm scales.
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* Copyright (C) 2020 Ad5001
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import QtQuick 2.12
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import "js/objects.js" as Objects
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import "js/historylib.js" as HistoryLib
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QtObject {
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// Using a QtObject is necessary in order to have proper property propagation in QML
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id: historyObj
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property int undoCount: 0
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property int redoCount: 0
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property var undoStack: []
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property var redoStack: []
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function empty() {
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undoStack = []
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redoStack = []
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}
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function addToHistory(action) {
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if(action instanceof HistoryLib.Action) {
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console.log("Added new entry to history: " + action.getReadableString())
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undoStack.push(action)
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undoCount++;
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redoStack = []
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}
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}
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function undo() {
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if(undoStack.length > 0) {
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var action = undoStack.pop()
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action.undo()
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objectLists.update()
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redoStack.push(action)
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undoCount--;
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redoCount++;
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}
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}
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function redo() {
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if(redoStack.length > 0) {
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var action = redoStack.pop()
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action.redo()
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objectLists.update()
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undoStack.push(action)
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undoCount++;
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redoCount--;
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}
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}
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Component.onCompleted: {
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Objects.history = historyObj
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Objects.HistoryLib = HistoryLib
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}
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}
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