inital commit

node_modules/jodit/esm/modules/history/stack.js

@@ -0,0 +1,63 @@
+/*!
+ * Jodit Editor (https://xdsoft.net/jodit/)
+ * Released under MIT see LICENSE.txt in the project root for license information.
+ * Copyright (c) 2013-2025 Valeriy Chupurnov. All rights reserved. https://xdsoft.net
+ */
+export class Stack {
+    constructor(size) {
+        this.size = size;
+        this.commands = [];
+        this.stackPosition = -1;
+    }
+    get length() {
+        return this.commands.length;
+    }
+    clearRedo() {
+        this.commands.length = this.stackPosition + 1;
+    }
+    clear() {
+        this.commands.length = 0;
+        this.stackPosition = -1;
+    }
+    push(command) {
+        this.clearRedo();
+        this.commands.push(command);
+        this.stackPosition += 1;
+        if (this.commands.length > this.size) {
+            this.commands.shift();
+            this.stackPosition -= 1;
+        }
+    }
+    replace(command) {
+        this.commands[this.stackPosition] = command;
+    }
+    current() {
+        return this.commands[this.stackPosition];
+    }
+    undo() {
+        if (this.canUndo()) {
+            if (this.commands[this.stackPosition]) {
+                this.commands[this.stackPosition].undo();
+            }
+            this.stackPosition -= 1;
+            return true;
+        }
+        return false;
+    }
+    redo() {
+        if (this.canRedo()) {
+            this.stackPosition += 1;
+            if (this.commands[this.stackPosition]) {
+                this.commands[this.stackPosition].redo();
+            }
+            return true;
+        }
+        return false;
+    }
+    canUndo() {
+        return this.stackPosition >= 0;
+    }
+    canRedo() {
+        return this.stackPosition < this.commands.length - 1;
+    }
+}