blob: 2167641d0648d1b879eafeca6140896bd6dc0475 [file] [log] [blame]
/**
* @license
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import {GestureEventListeners} from '@polymer/polymer/lib/mixins/gesture-event-listeners';
import {LegacyElementMixin} from '@polymer/polymer/lib/legacy/legacy-element-mixin';
import {PolymerElement} from '@polymer/polymer/polymer-element';
import {htmlTemplate} from './gr-coverage-layer_html';
import {CoverageRange, CoverageType, DiffLayer} from '../../../types/types';
import {customElement, property} from '@polymer/decorators';
declare global {
interface HTMLElementTagNameMap {
'gr-coverage-layer': GrCoverageLayer;
}
}
const TOOLTIP_MAP = new Map([
[CoverageType.COVERED, 'Covered by tests.'],
[CoverageType.NOT_COVERED, 'Not covered by tests.'],
[CoverageType.PARTIALLY_COVERED, 'Partially covered by tests.'],
[CoverageType.NOT_INSTRUMENTED, 'Not instrumented by any tests.'],
]);
@customElement('gr-coverage-layer')
export class GrCoverageLayer
extends GestureEventListeners(LegacyElementMixin(PolymerElement))
implements DiffLayer {
static get template() {
return htmlTemplate;
}
/**
* Must be sorted by code_range.start_line.
* Must only contain ranges that match the side.
*/
@property({type: Array})
coverageRanges: CoverageRange[] = [];
@property({type: String})
side?: string;
/**
* We keep track of the line number from the previous annotate() call,
* and also of the index of the coverage range that had matched.
* annotate() calls are coming in with increasing line numbers and
* coverage ranges are sorted by line number. So this is a very simple
* and efficient way for finding the coverage range that matches a given
* line number.
*/
@property({type: Number})
_lineNumber = 0;
@property({type: Number})
_index = 0;
/**
* Layer method to add annotations to a line.
*
* @param _el Not used for this layer. (unused parameter)
* @param lineNumberEl The <td> element with the line number.
* @param line Not used for this layer.
*/
annotate(_el: HTMLElement, lineNumberEl: HTMLElement) {
if (
!this.side ||
!lineNumberEl ||
!lineNumberEl.classList.contains(this.side)
) {
return;
}
let elementLineNumber;
const dataValue = lineNumberEl.getAttribute('data-value');
if (dataValue) {
elementLineNumber = parseInt(dataValue, 10);
}
if (!elementLineNumber || elementLineNumber < 1) return;
// If the line number is smaller than before, then we have to reset our
// algorithm and start searching the coverage ranges from the beginning.
// That happens for example when you expand diff sections.
if (elementLineNumber < this._lineNumber) {
this._index = 0;
}
this._lineNumber = elementLineNumber;
// We simply loop through all the coverage ranges until we find one that
// matches the line number.
while (this._index < this.coverageRanges.length) {
const coverageRange = this.coverageRanges[this._index];
// If the line number has moved past the current coverage range, then
// try the next coverage range.
if (this._lineNumber > coverageRange.code_range.end_line) {
this._index++;
continue;
}
// If the line number has not reached the next coverage range (and the
// range before also did not match), then this line has not been
// instrumented. Nothing to do for this line.
if (this._lineNumber < coverageRange.code_range.start_line) {
return;
}
// The line number is within the current coverage range. Style it!
lineNumberEl.classList.add(coverageRange.type);
lineNumberEl.title = TOOLTIP_MAP.get(coverageRange.type) || '';
return;
}
}
}