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