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Development Instructions

Selector Development

This section demonstrates all steps that are needed in order to create or extend a selector for the web scraper. In this example we are creating a "Select All" selector.

Create Selector Logic

You can skip the file creation steps if you intend to extend other selectors with functionallity.

  • Duplicate the file SelectorElementStyle.js in scripts/Selector/
  • Rename the duplicated file to SelectorAll.js
  • Modify the getData method to return all content
  • Specify which features you like to have enabled in the getFeatures function
  • Implement the logic for the enabled features (Feature textmanipulation will work out of the box)

Create Selector Controls

  • Add a section into the SelectorEdit.html file in devtools/views/
  • Add section class form-group feature feature-AllSelector
  • You can use {{#selectorName}} and {{/selectorName}} to prevent content from displaying (used for checkobx controls)
  • Use {{selector.selectorAll}} to define a variable

Set references to your selector

Controler

  • Open the Controler.js in scripts/
  • Add a variable in the function getCurrentlyEditedSelector to select your HTML section value
  • Add the variable to the newSelector object (every selector in scripts/Selector/ that references this feature can access the value)
  • Add validation rules to your variable in the function initSelectorValidation

File reference

  • Add a reference in extension/manifest.json in the section content_scripts and scripts
  • Add a reference to extension\devtools\devtools_scraper_panel.html
  • Add a eference to playgrounds\extension\index.html
  • Add a reference to tests\SpecRunner.html

Testing

For testing you need to run a web server. Personally I use Web Server for Chrome and reference the working directory of the project.

  • Duplicate a test file in tests/Selector and rename it
  • Write your tests for your selector
  • Run the tests by opening tests/SpecRunner.html
  • Try you implementation by opening playgrounds/extension/index.html
  • Extend the playground if it does not cover your scenario

Documentation

  • Create a md file in docs/selectors
  • Describe the usage, options, etc