moved to root
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Andrew Zambazos
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/*
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* Copyright (C) 2018 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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WI.MediaTimelineOverviewGraph = class MediaTimelineOverviewGraph extends WI.TimelineOverviewGraph
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{
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constructor(timeline, timelineOverview)
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{
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console.assert(timeline instanceof WI.Timeline);
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console.assert(timeline.type === WI.TimelineRecord.Type.Media);
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super(timelineOverview);
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this.element.classList.add("media");
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this.reset();
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for (let record of timeline.records)
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this._processRecord(record);
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timeline.addEventListener(WI.Timeline.Event.RecordAdded, this._handleRecordAdded, this);
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timeline.addEventListener(WI.Timeline.Event.TimesUpdated, this._handleTimesUpdated, this);
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}
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// Static
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static get maximumRowCount() {
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return 6;
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}
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// Public
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reset()
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{
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super.reset();
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this._recordsWithoutStartTime = new Set;
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this.element.removeChildren();
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this._nextDumpRow = 0;
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this._timelineRecordGridRows = [];
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for (let i = 0; i < MediaTimelineOverviewGraph.maximumRowCount; ++i) {
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let rowElement = this.element.appendChild(document.createElement("div"));
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rowElement.className = "graph-row";
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this._timelineRecordGridRows.push({
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records: [],
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recordBars: [],
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element: rowElement,
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});
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}
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}
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// Protected
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layout()
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{
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super.layout();
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if (this.hidden)
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return;
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let secondsPerPixel = this.timelineOverview.secondsPerPixel;
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let recordBarIndex = 0;
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let createBar = (element, recordBars, records, renderMode) => {
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let timelineRecordBar = recordBars[recordBarIndex];
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if (!timelineRecordBar)
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timelineRecordBar = recordBars[recordBarIndex] = new WI.TimelineRecordBar(this, records, renderMode);
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else {
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timelineRecordBar.renderMode = renderMode;
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timelineRecordBar.records = records;
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}
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timelineRecordBar.refresh(this);
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if (!timelineRecordBar.element.parentNode)
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element.appendChild(timelineRecordBar.element);
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++recordBarIndex;
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};
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for (let {records, recordBars, element} of this._timelineRecordGridRows) {
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recordBarIndex = 0;
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WI.TimelineRecordBar.createCombinedBars(records, secondsPerPixel, this, createBar.bind(this, element, recordBars));
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// Remove the remaining unused `WI.TimelineRecordBar`.
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for (; recordBarIndex < recordBars.length; ++recordBarIndex) {
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recordBars[recordBarIndex].records = null;
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recordBars[recordBarIndex].element.remove();
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}
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}
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}
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updateSelectedRecord()
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{
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super.updateSelectedRecord();
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for (let {recordBars} of this._timelineRecordGridRows) {
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for (let recordBar of recordBars) {
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if (recordBar.records.includes(this.selectedRecord)) {
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this.selectedRecordBar = recordBar;
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return;
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}
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}
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}
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this.selectedRecordBar = null;
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}
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// Private
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_processRecord(record)
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{
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console.assert(record instanceof WI.MediaTimelineRecord);
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if (isNaN(record.startTime)) {
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this._recordsWithoutStartTime.add(record);
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record.singleFireEventListener(WI.TimelineRecord.Event.Updated, function(event) {
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this._processRecord(record);
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this.needsLayout();
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}, this);
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return;
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}
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this._recordsWithoutStartTime.delete(record);
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function compareByStartTime(a, b) {
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return a.startTime - b.startTime;
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}
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let minimumBarPaddingTime = WI.TimelineOverview.MinimumDurationPerPixel * (WI.TimelineRecordBar.MinimumWidthPixels + WI.TimelineRecordBar.MinimumMarginPixels);
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// Try to find a row that has room and does not overlap a previous record.
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for (let i = 0; i < this._timelineRecordGridRows.length; ++i) {
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let records = this._timelineRecordGridRows[i].records;
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let lastRecord = records.lastValue;
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if (!lastRecord || lastRecord.endTime + minimumBarPaddingTime <= record.startTime) {
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insertObjectIntoSortedArray(record, records, compareByStartTime);
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this._nextDumpRow = i + 1;
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return;
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}
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}
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// Try to find a row that does not overlap a previous record's active time, but it can overlap the inactive time.
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for (let i = 0; i < this._timelineRecordGridRows.length; ++i) {
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let records = this._timelineRecordGridRows[i].records;
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let lastRecord = records.lastValue;
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console.assert(lastRecord);
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if (lastRecord.usesActiveStartTime && lastRecord.activeStartTime + minimumBarPaddingTime <= record.startTime) {
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insertObjectIntoSortedArray(record, records, compareByStartTime);
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this._nextDumpRow = i + 1;
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break;
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}
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}
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// We didn't find a empty spot, so dump into the designated dump row.
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if (this._nextDumpRow >= MediaTimelineOverviewGraph.maximumRowCount)
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this._nextDumpRow = 0;
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insertObjectIntoSortedArray(record, this._timelineRecordGridRows[this._nextDumpRow++].records, compareByStartTime);
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}
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_handleRecordAdded(event)
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{
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this._processRecord(event.data.record);
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this.needsLayout();
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}
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_handleTimesUpdated(event)
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{
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this.needsLayout();
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}
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};
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