feat: added javascript text commands

2021-05-27 00:26:25 +01:00
parent 386a8f518a
commit 5c168365b6
7 changed files with 160 additions and 12 deletions
--- a/lib/src/utils/javascript_executor_base.dart
+++ b/lib/src/utils/javascript_executor_base.dart
@@ -0,0 +1,133 @@
+import 'package:flutter/material.dart';
+import 'package:rich_editor/src/extensions/extensions.dart';
+import 'package:webview_flutter/webview_flutter.dart';
+
+class JavaScriptExecutorBase {
+  static executeJavascript(WebViewController controller, String command) async {
+    return await controller.evaluateJavascript('editor.$command');
+  }
+
+  static setHtml(WebViewController controller, String html) async {
+    String? baseUrl;
+    await executeJavascript(
+        controller, "setHtml('" + encodeHtml(html) + "', '$baseUrl');");
+  }
+
+  static getHtml(WebViewController controller) async {
+    String? html = await executeJavascript(controller, 'getEncodedHtml()');
+    String? decodedHtml = Uri.decodeFull(html!);
+    if (decodedHtml.startsWith('"') && decodedHtml.endsWith('"')) {
+      decodedHtml = decodedHtml.substring(1, decodedHtml.length - 1);
+    }
+    return decodedHtml;
+  }
+
+  // Text commands
+  static undo(WebViewController controller) async {
+    await executeJavascript(controller, "undo()");
+  }
+
+  static redo(WebViewController controller) async {
+    await executeJavascript(controller, "redo()");
+  }
+
+  static setBold(WebViewController controller) async {
+    await executeJavascript(controller, "setBold()");
+  }
+
+  static setItalic(WebViewController controller) async {
+    await executeJavascript(controller, "setItalic()");
+  }
+
+  static setUnderline(WebViewController controller) async {
+    await executeJavascript(controller, "setUnderline()");
+  }
+
+  static setSubscript(WebViewController controller) async {
+    await executeJavascript(controller, "setSubscript()");
+  }
+
+  static setSuperscript(WebViewController controller) async {
+    await executeJavascript(controller, "setSuperscript()");
+  }
+
+  static setStrikeThrough(WebViewController controller) async {
+    await executeJavascript(controller, "setStrikeThrough()");
+  }
+
+  static setTextColor(WebViewController controller, Color? color) async {
+    String? hex = color!.toHexColorString();
+    await executeJavascript(controller, "setTextColor('$hex')");
+  }
+
+  static setFontName(WebViewController controller, String fontName) async {
+    await executeJavascript(controller, "setFontName('$fontName')");
+  }
+
+  static setFontSize(WebViewController controller, int fontSize) async {
+    if (fontSize < 1 || fontSize > 7) {
+      throw ("Font size should have a value between 1-7");
+    }
+    await executeJavascript(controller, "setFontSize('$fontSize')");
+  }
+
+  static setHeading(WebViewController controller, int heading) async {
+    await executeJavascript(controller, "setHeading('$heading')");
+  }
+
+  static setFormattingToParagraph(WebViewController controller) async {
+    await executeJavascript(controller, "setFormattingToParagraph()");
+  }
+
+  static setPreformat(WebViewController controller) async {
+    await executeJavascript(controller, "setPreformat()");
+  }
+
+  static setBlockQuote(WebViewController controller) async {
+    await executeJavascript(controller, "setBlockQuote()");
+  }
+
+  static removeFormat(WebViewController controller) async {
+    await executeJavascript(controller, "removeFormat()");
+  }
+
+  static setJustifyLeft(WebViewController controller) async {
+    await executeJavascript(controller, "setJustifyLeft()");
+  }
+
+  static setJustifyCenter(WebViewController controller) async {
+    await executeJavascript(controller, "setJustifyCenter()");
+  }
+
+  static setJustifyRight(WebViewController controller) async {
+    await executeJavascript(controller, "setJustifyRight()");
+  }
+
+  static setJustifyFull(WebViewController controller) async {
+    await executeJavascript(controller, "setJustifyFull()");
+  }
+
+  static setIndent(WebViewController controller) async {
+    await executeJavascript(controller, "setIndent()");
+  }
+
+  static setOutdent(WebViewController controller) async {
+    await executeJavascript(controller, "setOutdent()");
+  }
+
+  static insertBulletList(WebViewController controller) async {
+    await executeJavascript(controller, "insertBulletList()");
+  }
+
+  static insertNumberedList(WebViewController controller) async {
+    await executeJavascript(controller, "insertNumberedList()");
+  }
+
+  static decodeHtml(String html) {
+    return Uri.decodeFull(html);
+  }
+
+  static encodeHtml(String html) {
+    return Uri.encodeFull(html);
+  }
+}