v8/tools/system-analyzer/view/map-panel.mjs

// Copyright 2020 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import './map-panel/map-details.mjs';
import './map-panel/map-transitions.mjs';

import {MapLogEntry} from '../log/map.mjs';

import {FocusEvent} from './events.mjs';
import {CollapsableElement, DOM} from './helper.mjs';

DOM.defineCustomElement('view/map-panel',
                        (templateText) =>
                            class MapPanel extends CollapsableElement {
  _map;
  _timeline;
  _selectedLogEntries = [];
  _displayedLogEntries = [];

  constructor() {
    super(templateText);
    this.searchBarBtn.addEventListener('click', e => this._handleSearch(e));
    this.showAllRadio.onclick = _ => this._showEntries(this._timeline);
    this.showTimerangeRadio.onclick = _ =>
        this._showEntries(this._timeline.selectionOrSelf);
    this.showSelectionRadio.onclick = _ =>
        this._showEntries(this._selectedLogEntries);
  }

  get showAllRadio() {
    return this.$('#show-all');
  }

  get showTimerangeRadio() {
    return this.$('#show-timerange');
  }

  get showSelectionRadio() {
    return this.$('#show-selection');
  }

  get mapTransitionsPanel() {
    return this.$('#map-transitions');
  }

  get mapDetailsTransitionsPanel() {
    return this.$('#map-details-transitions');
  }

  get mapDetailsPanel() {
    return this.$('#map-details');
  }

  get searchBarBtn() {
    return this.$('#searchBarBtn');
  }

  get searchBar() {
    return this.$('#searchBar');
  }

  set timeline(timeline) {
    console.assert(timeline !== undefined, 'timeline undefined!');
    this._timeline = timeline;
    this.$('.panel').style.display = timeline.isEmpty() ? 'none' : 'inherit';
    this.mapTransitionsPanel.timeline = timeline;
    this.mapDetailsTransitionsPanel.timeline = timeline;
  }

  set selectedLogEntries(entries) {
    if (entries === this._timeline.selection) {
      this.showTimerangeRadio.click();
    } else if (entries == this._timeline) {
      this.showAllRadio.click();
    } else {
      this._selectedLogEntries = entries;
      this.showSelectionRadio.click();
    }
  }

  set map(map) {
    this._map = map;
    this.requestUpdate();
  }

  _showEntries(entries) {
    this._displayedLogEntries = entries;
    this.requestUpdate();
  }

  _update() {
    this.mapDetailsTransitionsPanel.selectedLogEntries = [this._map];
    this.mapDetailsPanel.map = this._map;
    this.mapTransitionsPanel.selectedLogEntries = this._displayedLogEntries;
  }

  _handleSearch(e) {
    const searchBar = this.$('#searchBarInput');
    const searchBarInput = searchBar.value;
    // access the map from model cache
    const selectedMap = MapLogEntry.get(searchBarInput);
    if (selectedMap) {
      searchBar.className = 'success';
      this.dispatchEvent(new FocusEvent(selectedMap));
    } else {
      searchBar.className = 'failure';
    }
  }
});