bpmn-js/lib/features/search/BpmnSearchProvider.js

129 lines
2.4 KiB
JavaScript

import {
map,
filter,
sortBy
} from 'min-dash';
import {
getLabel
} from '../label-editing/LabelUtil';
/**
* Provides ability to search through BPMN elements
*/
export default function BpmnSearchProvider(elementRegistry, searchPad, canvas) {
this._elementRegistry = elementRegistry;
this._canvas = canvas;
searchPad.registerProvider(this);
}
BpmnSearchProvider.$inject = [
'elementRegistry',
'searchPad',
'canvas'
];
/**
* Finds all elements that match given pattern
*
* <Result> :
* {
* primaryTokens: <Array<Token>>,
* secondaryTokens: <Array<Token>>,
* element: <Element>
* }
*
* <Token> :
* {
* normal|matched: <String>
* }
*
* @param {String} pattern
* @return {Array<Result>}
*/
BpmnSearchProvider.prototype.find = function(pattern) {
var rootElement = this._canvas.getRootElement();
var elements = this._elementRegistry.filter(function(element) {
if (element.labelTarget) {
return false;
}
return true;
});
// do not include root element
elements = filter(elements, function(element) {
return element !== rootElement;
});
elements = map(elements, function(element) {
return {
primaryTokens: matchAndSplit(getLabel(element), pattern),
secondaryTokens: matchAndSplit(element.id, pattern),
element: element
};
});
// exclude non-matched elements
elements = filter(elements, function(element) {
return hasMatched(element.primaryTokens) || hasMatched(element.secondaryTokens);
});
elements = sortBy(elements, function(element) {
return getLabel(element.element) + element.element.id;
});
return elements;
};
function hasMatched(tokens) {
var matched = filter(tokens, function(t) {
return !!t.matched;
});
return matched.length > 0;
}
function matchAndSplit(text, pattern) {
var tokens = [],
originalText = text;
if (!text) {
return tokens;
}
text = text.toLowerCase();
pattern = pattern.toLowerCase();
var i = text.indexOf(pattern);
if (i > -1) {
if (i !== 0) {
tokens.push({
normal: originalText.substr(0, i)
});
}
tokens.push({
matched: originalText.substr(i, pattern.length)
});
if (pattern.length + i < text.length) {
tokens.push({
normal: originalText.substr(pattern.length + i, text.length)
});
}
} else {
tokens.push({
normal: originalText
});
}
return tokens;
}