element_query

A polyfill for Element Query.

Usage

Use existing CSS syntax
Elements/selectors must be registered through code
Supported query types: min-width, max-width, min-height, max-height
Supported units: px, em
Queries are updated automatically when the window is resized. For other cases, a call to update is required.

CSS

header[min-width~="500px"] {
    color: red;
}
header[max-width~="500px"] nav {
    clear: both;
}
header[min-width~="500px"] nav[min-height~="3em"] {
    color: white;
}

Dart

import 'package:element_query/element_query.dart' as eq;

main() {
  // Initialize Element Query.
  // This method is safe to be called multiple times.
  eq.init();

  // Register a selector with two checkpoints for min-width.
  eq.register('.main-pane', minWidths: ['600px', '1000px']);
  
  // Register an element with one checkpoint for max-height.
  eq.register(element, maxHeights: ['3em']);


  document.querySelector('.left-pane')
    ..onClick.listen((e) {
      e.target.classes.toggle('expanded');
    })
    ..onTransitionEnd.listen((_) {
      // Call `update` to trigger a refresh.
      eq.update();
    });
}

Features and bugs

Please file feature requests and bugs at the issue tracker.

0.02

An event of type query-changed is fired on a target element when its size passes a break point
Fixed a bug when using the em unit

0.0.1

Initial version

example/example.dart

// Copyright (c) 2016, Man Hoang. All rights reserved. Use of this source code
// is governed by a BSD-style license that can be found in the LICENSE file.

import 'dart:html';
import 'package:element_query/element_query.dart' as eq;

main() {
  // Initialize Element Query.
  // This method is safe to be called multiple times.
  eq.init();

  // Register a selector with two checkpoints for min-width.
  eq.register('.main-pane', minWidths: ['600px', '1000px']);

  // Alternatively, we can register an element.
  //eq.register(document.querySelector('.main-pane'),
  //    minWidths: ['500px', '1000px']);

  document.querySelector('.left-pane')
    ..onClick.listen((e) {
      (e.target as Element).classes.toggle('expanded');
    })
    ..onTransitionEnd.listen((_) {
      eq.update();
    });
}

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:


dependencies:
  element_query: "^0.0.2"

2. Install it

You can install packages from the command line:

with pub:


$ pub get

Alternatively, your editor might support pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:


      import 'package:element_query/element_query.dart';

Version	Uploaded	Documentation	Archive
0.0.2	May 31, 2018
0.0.1	Sep 19, 2016

Analysis

We analyzed this package on Jun 19, 2018, and provided a score, details, and suggestions below. Analysis was completed with status completed using:

Dart: 2.0.0-dev.63.0
pana: 0.11.3

Scores

Popularity: Describes how popular the package is relative to other packages. [more]	0	/ 100
Health: Code health derived from static analysis. [more]	100	/ 100
Maintenance: Reflects how tidy and up-to-date the package is. [more]	100	/ 100
Overall score: Weighted score of the above. [more]	50

Learn more about scoring.

Platforms

Detected platforms: web

Primary library: package:element_query/element_query.dart with components: html.

Suggestions

The description is too short.

Add more detail about the package, what it does and what is its target use case. Try to write at least 60 characters.
Package is pre-v1 release.

While there is nothing inherently wrong with versions of 0.*.*, it usually means that the author is still experimenting with the general direction API.

Dependencies

Package	Constraint	Resolved	Available
Direct dependencies
Dart SDK	>=1.0.0 <2.0.0
Dev dependencies
browser	any

Dart pub

element_query 0.0.2