[refactor] Converted TextFile to TypeScript

src/TextFile.ts

@@ -0,0 +1,103 @@
+import {dialogBoxCreate} from "../utils/DialogBox";
+import {Reviver, Generic_toJSON, Generic_fromJSON} from "../utils/JSONReviver";
+
+export class TextFile {
+    fn: string;
+    text: string;
+
+    constructor(fn = "", txt = "") {
+        this.fn = (fn.endsWith(".txt") ? fn : `${fn}.txt`).replace(/\s+/g, '');
+        this.text = txt;
+    }
+
+    append(txt: string) {
+        this.text += txt;
+    }
+
+    write(txt: string) {
+        this.text = txt;
+    }
+
+    read() {
+        return this.text;
+    }
+
+    show() {
+        dialogBoxCreate(`${this.fn}<br /><br />${this.text}`, true);
+    }
+
+    download() {
+        const filename = this.fn;
+        const file = new Blob([ this.text ], { type: 'text/plain' });
+        if (window.navigator.msSaveOrOpenBlob) {
+            // IE10+
+            window.navigator.msSaveOrOpenBlob(file, filename);
+        } else {
+            // Others
+            const a = document.createElement("a");
+            const url = URL.createObjectURL(file);
+            a.href = url;
+            a.download = this.fn;
+            document.body.appendChild(a);
+            a.click();
+            setTimeout(() => {
+                document.body.removeChild(a);
+                window.URL.revokeObjectURL(url);
+            }, 0);
+        }
+    }
+
+    toJSON() {
+        return Generic_toJSON("TextFile", this);
+    }
+
+    static fromJSON(value: any) {
+        return Generic_fromJSON(TextFile, value.data);
+    }
+}
+
+Reviver.constructors.TextFile = TextFile;
+
+export function getTextFile(fn: string, server: any): string | null {
+    if (!fn.endsWith(".txt")) {
+        fn += ".txt";
+    }
+
+    for (let i = 0; i < server.textFiles.length; i++) {
+        if (server.textFiles[i].fn === fn) {
+            return server.textFiles[i];
+        }
+    }
+
+    return null;
+}
+
+/**
+ * Creates a TextFile on the target server.
+ * @param {string} fn The file name to create.
+ * @param {string} txt The contents of the file.
+ * @param {*} server The server that the file should be created on.
+ * @returns {TextFile} The instance of the file.
+ */
+export function createTextFile(fn: string, txt: string, server: any): TextFile {
+    if (getTextFile(fn, server) !== null) {
+        console.error(`A file named "${fn}" already exists on server ${server.hostname}.`);
+        return;
+    }
+    const file = new TextFile(fn, txt);
+    server.textFiles.push(file);
+    return file;
+}
+
+function deleteTextFile(fn, server) {
+    if (!fn.endsWith(".txt")) {
+        fn += ".txt";
+    }
+    for (var i = 0; i < server.textFiles.length; ++i) {
+        if (server.textFiles[i].fn === fn) {
+            server.textFiles.splice(i, 1);
+            return true;
+        }
+    }
+    return false;
+}