detectable_text_field

Text widgets with detection features. You can detect hashtags, at sign, url, or anything you want. Helps you develop Twitter like app.

Refinement of hashtagable.

Usage

DetectableTextField

    DetectableTextField(
      detectionRegExp: detectionRegExp(),
      detectedStyle: TextStyle(
        fontSize: 20,
        color: Colors.blue,
      ),
    )

• detectionRegExp decides the text to detect.
• detectedStyle is the textStyle for detected text.

DetectableTextEditingController

DetectableTextEditingController allows you to listen to the typingDetection. Ideal for features like live hashtag or mention detection.

    final controller = DetectableTextEditingController(
      regExp: detectionRegExp(),
    );
    
    @override
    void initState() {
      super.initState();
      controller.addListener(() {
        setState(() {});
      });
    }
    
    @override
    Widget build(BuildContext context) {
      return Column(
        mainAxisSize: MainAxisSize.min,
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          Text(
            'Typing detection: ${controller.typingDetection}',
          ),
          DetectableTextField(
            controller: controller,
          ),
        ],
      );
    }

DetectableTextEditingController extends TextEditingController, so you can use it with TextField, TextFormField or any other widgets that accept TextEditingController.

If you use flutter_hooks, useDetectableTextEditingController is also available.

DetectableText

If you want to use detection feature in the text only to display, use DetectableText.

    DetectableText(
      text: "#HashTag and @AtSign and https://pub.dev/packages/detectable_text_field",
      detectionRegExp: detectionRegExp(),
      detectedStyle: TextStyle(
        fontSize: 20,
        color: Colors.blue,
      ),
      basicStyle: TextStyle(
        fontSize: 20,
      ),
      onTap: (tappedText){
        print(tappedText);
      },
    )

Usage of the arguments like detectionRegExp are same as the ones in DetectableTextField.

The argument onTap(String) is called when user tapped a detected text.

detectionRegExp()

The widgets and methods in this package is expected to be used with RegExp.

The function detectionRegExp() returns sample regExp depending on the boolean arguments: hashtag , atSign, and url.They are all true by default.

If you see the API reference , you will see the function just returns the sample regular expressions below. You can use them directly if you want.

sample regExp	hashtag	atSign	url
hashTagRegExp	○	×	×
atSignRegExp	×	○	×
urlRegExp	×	×	○
hashTagAtSignRegExp	○	○	×
hashTagUrlRegExp	○	×	○
AtSignUrlRegExp	×	○	○
hashTagAtSignUrlRegExp	○	○	○

• The detection rules are almost same as X(formally twitter).
  1. It needs space before # or @.
  2. It stops # and @ detection if there's emoji or symbol.

• The examples currently support six languages: English, Japanese, Korean, Spanish, Arabic, and Thai.

Customize with useful functions

• Check if there are detections

  print(isDetected("Hello #World", hashTagRegExp));
// true

  print(isDetected("Hello World", hashTagRegExp));
// false

• Extract detections from text

  final List<String> detections = extractDetections(
    "#Hello World #Flutter Dart #Thank you", 
    hashTagRegExp,
  );
  // ["#Hello", "#Flutter", "#Thank"]

If you have any requests or questions, please feel free to ask on github.

Contributors ✨

Thanks goes to these wonderful people (emoji key):

Santa Takahashi 💻	Paresh Patil 💻	Joseph Muller 💻	Esteve Aguilera 💻	MATTYGILO 💻	Abdullahi A. Addow 💻	Social Jawn 💻
xuxiaowei13 💻	debuggerx01 💻	furukaze-akane 💻	drown0315 💻

This project follows the all-contributors specification. Contributions of any kind welcome!