You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.8 KiB
54 lines
1.8 KiB
let util = require("../../../../util");
|
|
|
|
/**
|
|
* Helper functions for components
|
|
* @class
|
|
*/
|
|
class ComponentUtil {
|
|
/**
|
|
* Determine values to use for (sub)options of 'chosen'.
|
|
*
|
|
* This option is either a boolean or an object whose values should be examined further.
|
|
* The relevant structures are:
|
|
*
|
|
* - chosen: <boolean value>
|
|
* - chosen: { subOption: <boolean or function> }
|
|
*
|
|
* Where subOption is 'node', 'edge' or 'label'.
|
|
*
|
|
* The intention of this method appears to be to set a specific priority to the options;
|
|
* Since most properties are either bridged or merged into the local options objects, there
|
|
* is not much point in handling them separately.
|
|
* TODO: examine if 'most' in previous sentence can be replaced with 'all'. In that case, we
|
|
* should be able to get rid of this method.
|
|
*
|
|
* @param {String} subOption option within object 'chosen' to consider; either 'node', 'edge' or 'label'
|
|
* @param {Object} pile array of options objects to consider
|
|
*
|
|
* @return {boolean|function} value for passed subOption of 'chosen' to use
|
|
*/
|
|
static choosify(subOption, pile) {
|
|
// allowed values for subOption
|
|
let allowed = [ 'node', 'edge', 'label'];
|
|
let value = true;
|
|
|
|
let chosen = util.topMost(pile, 'chosen');
|
|
if (typeof chosen === 'boolean') {
|
|
value = chosen;
|
|
} else if (typeof chosen === 'object') {
|
|
if (allowed.indexOf(subOption) === -1 ) {
|
|
throw new Error('choosify: subOption \'' + subOption + '\' should be one of '
|
|
+ "'" + allowed.join("', '") + "'");
|
|
}
|
|
|
|
let chosenEdge = util.topMost(pile, ['chosen', subOption]);
|
|
if ((typeof chosenEdge === 'boolean') || (typeof chosenEdge === 'function')) {
|
|
value = chosenEdge;
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
}
|
|
|
|
export default ComponentUtil;
|