xterm

[VSoRC/.git] / node_modules / xterm / src / public / AddonManager.ts

diff --git a/node_modules/xterm/src/public/AddonManager.ts b/node_modules/xterm/src/public/AddonManager.ts
new file mode 100644 (file)
index 0000000..0261fd6
--- /dev/null
+++ b/node_modules/xterm/src/public/AddonManager.ts
@@ -0,0 +1,56 @@
+/**
+ * Copyright (c) 2019 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { ITerminalAddon, IDisposable, Terminal } from 'xterm';
+
+export interface ILoadedAddon {
+  instance: ITerminalAddon;
+  dispose: () => void;
+  isDisposed: boolean;
+}
+
+export class AddonManager implements IDisposable {
+  protected _addons: ILoadedAddon[] = [];
+
+  constructor() {
+  }
+
+  public dispose(): void {
+    for (let i = this._addons.length - 1; i >= 0; i--) {
+      this._addons[i].instance.dispose();
+    }
+  }
+
+  public loadAddon(terminal: Terminal, instance: ITerminalAddon): void {
+    const loadedAddon: ILoadedAddon = {
+      instance,
+      dispose: instance.dispose,
+      isDisposed: false
+    };
+    this._addons.push(loadedAddon);
+    instance.dispose = () => this._wrappedAddonDispose(loadedAddon);
+    instance.activate(<any>terminal);
+  }
+
+  private _wrappedAddonDispose(loadedAddon: ILoadedAddon): void {
+    if (loadedAddon.isDisposed) {
+      // Do nothing if already disposed
+      return;
+    }
+    let index = -1;
+    for (let i = 0; i < this._addons.length; i++) {
+      if (this._addons[i] === loadedAddon) {
+        index = i;
+        break;
+      }
+    }
+    if (index === -1) {
+      throw new Error('Could not dispose an addon that has not been loaded');
+    }
+    loadedAddon.isDisposed = true;
+    loadedAddon.dispose.apply(loadedAddon.instance);
+    this._addons.splice(index, 1);
+  }
+}