blob: f6cc08b77f6c92ff050d3923214d171aa67837da [file] [log] [blame]
/*
* Copyright (C) 2013 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.TimelineRuler = class TimelineRuler extends WI.View
{
constructor()
{
super();
this.element.classList.add("timeline-ruler");
this._headerElement = document.createElement("div");
this._headerElement.classList.add("header");
this.element.appendChild(this._headerElement);
this._markersElement = document.createElement("div");
this._markersElement.classList.add("markers");
this.element.appendChild(this._markersElement);
this._zeroTime = 0;
this._startTime = 0;
this._endTime = 0;
this._duration = NaN;
this._secondsPerPixel = 0;
this._selectionStartTime = 0;
this._selectionEndTime = Number.MAX_VALUE;
this._endTimePinned = false;
this._snapInterval = 0;
this._allowsClippedLabels = false;
this._allowsTimeRangeSelection = false;
this._minimumSelectionDuration = 0.01;
this._formatLabelCallback = null;
this._timeRangeSelectionChanged = false;
this._enabled = true;
this._scannerMarker = null;
this._markerElementMap = new Map;
this._cachedClientWidth = 0;
}
// Public
get enabled()
{
return this._enabled;
}
set enabled(x)
{
if (this._enabled === x)
return;
this._enabled = x;
this.element.classList.toggle(WI.TreeElementStatusButton.DisabledStyleClassName, !this._enabled);
}
get allowsClippedLabels()
{
return this._allowsClippedLabels;
}
set allowsClippedLabels(x)
{
x = !!x;
if (this._allowsClippedLabels === x)
return;
this._allowsClippedLabels = x;
this.needsLayout();
}
set formatLabelCallback(x)
{
console.assert(typeof x === "function" || !x, x);
x = x || null;
if (this._formatLabelCallback === x)
return;
this._formatLabelCallback = x;
this.needsLayout();
}
get allowsTimeRangeSelection()
{
return this._allowsTimeRangeSelection;
}
set allowsTimeRangeSelection(x)
{
x = !!x;
if (this._allowsTimeRangeSelection === x)
return;
this._allowsTimeRangeSelection = x;
if (x) {
this._clickEventListener = this._handleClick.bind(this);
this._doubleClickEventListener = this._handleDoubleClick.bind(this);
this._mouseDownEventListener = this._handleMouseDown.bind(this);
this.element.addEventListener("click", this._clickEventListener);
this.element.addEventListener("dblclick", this._doubleClickEventListener);
this.element.addEventListener("mousedown", this._mouseDownEventListener);
this._leftShadedAreaElement = document.createElement("div");
this._leftShadedAreaElement.classList.add("shaded-area");
this._leftShadedAreaElement.classList.add("left");
this._rightShadedAreaElement = document.createElement("div");
this._rightShadedAreaElement.classList.add("shaded-area");
this._rightShadedAreaElement.classList.add("right");
this._leftSelectionHandleElement = document.createElement("div");
this._leftSelectionHandleElement.classList.add("selection-handle");
this._leftSelectionHandleElement.classList.add("left");
this._leftSelectionHandleElement.addEventListener("mousedown", this._handleSelectionHandleMouseDown.bind(this));
this._rightSelectionHandleElement = document.createElement("div");
this._rightSelectionHandleElement.classList.add("selection-handle");
this._rightSelectionHandleElement.classList.add("right");
this._rightSelectionHandleElement.addEventListener("mousedown", this._handleSelectionHandleMouseDown.bind(this));
this._selectionDragElement = document.createElement("div");
this._selectionDragElement.classList.add("selection-drag");
this._needsSelectionLayout();
} else {
this.element.removeEventListener("click", this._clickEventListener);
this.element.removeEventListener("dblclick", this._doubleClickEventListener);
this.element.removeEventListener("mousedown", this._mouseDownEventListener);
this._clickEventListener = null;
this._doubleClickEventListener = null;
this._mouseDownEventListener = null;
this._leftShadedAreaElement.remove();
this._rightShadedAreaElement.remove();
this._leftSelectionHandleElement.remove();
this._rightSelectionHandleElement.remove();
this._selectionDragElement.remove();
delete this._leftShadedAreaElement;
delete this._rightShadedAreaElement;
delete this._leftSelectionHandleElement;
delete this._rightSelectionHandleElement;
delete this._selectionDragElement;
}
}
get minimumSelectionDuration()
{
return this._minimumSelectionDuration;
}
set minimumSelectionDuration(x)
{
this._minimumSelectionDuration = x;
}
get zeroTime()
{
return this._zeroTime;
}
set zeroTime(x)
{
x = x || 0;
if (this._zeroTime === x)
return;
if (this.entireRangeSelected)
this.selectionStartTime = x;
this._zeroTime = x;
this.needsLayout();
}
get startTime()
{
return this._startTime;
}
set startTime(x)
{
x = x || 0;
if (this._startTime === x)
return;
this._startTime = x;
if (!isNaN(this._duration))
this._endTime = this._startTime + this._duration;
this._currentDividers = null;
this.needsLayout();
}
get duration()
{
if (!isNaN(this._duration))
return this._duration;
return this.endTime - this.startTime;
}
get endTime()
{
if (!this._endTimePinned && this.layoutPending)
this._recalculate();
return this._endTime;
}
set endTime(x)
{
x = x || 0;
if (this._endTime === x)
return;
this._endTime = x;
this._endTimePinned = true;
this.needsLayout();
}
get secondsPerPixel()
{
if (this.layoutPending)
this._recalculate();
return this._secondsPerPixel;
}
set secondsPerPixel(x)
{
x = x || 0;
if (this._secondsPerPixel === x)
return;
this._secondsPerPixel = x;
this._endTimePinned = false;
this._currentDividers = null;
this._currentSliceTime = 0;
this.needsLayout();
}
get snapInterval()
{
return this._snapInterval;
}
set snapInterval(x)
{
if (this._snapInterval === x)
return;
this._snapInterval = x;
}
get selectionStartTime()
{
return this._selectionStartTime;
}
set selectionStartTime(x)
{
x = this._snapValue(x) || 0;
if (this._selectionStartTime === x)
return;
this._selectionStartTime = x;
this._timeRangeSelectionChanged = true;
this._needsSelectionLayout();
}
get selectionEndTime()
{
return this._selectionEndTime;
}
set selectionEndTime(x)
{
x = this._snapValue(x) || 0;
if (this._selectionEndTime === x)
return;
this._selectionEndTime = x;
this._timeRangeSelectionChanged = true;
this._needsSelectionLayout();
}
get entireRangeSelected()
{
return this._selectionStartTime === this._zeroTime && this._selectionEndTime === Number.MAX_VALUE;
}
selectEntireRange()
{
this.selectionStartTime = this._zeroTime;
this.selectionEndTime = Number.MAX_VALUE;
}
addMarker(marker)
{
console.assert(marker instanceof WI.TimelineMarker);
if (this._markerElementMap.has(marker))
return;
marker.addEventListener(WI.TimelineMarker.Event.TimeChanged, this._timelineMarkerTimeChanged, this);
let markerTime = marker.time - this._startTime;
let markerElement = document.createElement("div");
markerElement.classList.add(marker.type, "marker");
switch (marker.type) {
case WI.TimelineMarker.Type.LoadEvent:
markerElement.title = WI.UIString("Load \u2014 %s").format(Number.secondsToString(markerTime));
break;
case WI.TimelineMarker.Type.DOMContentEvent:
markerElement.title = WI.UIString("DOM Content Loaded \u2014 %s").format(Number.secondsToString(markerTime));
break;
case WI.TimelineMarker.Type.TimeStamp:
if (marker.details)
markerElement.title = WI.UIString("%s \u2014 %s").format(marker.details, Number.secondsToString(markerTime));
else
markerElement.title = WI.UIString("Timestamp \u2014 %s").format(Number.secondsToString(markerTime));
break;
}
this._markerElementMap.set(marker, markerElement);
this._needsMarkerLayout();
}
clearMarkers()
{
for (let [marker, markerElement] of this._markerElementMap) {
marker.removeEventListener(WI.TimelineMarker.Event.TimeChanged, this._timelineMarkerTimeChanged, this);
markerElement.remove();
}
this._markerElementMap.clear();
this._scannerMarker = null;
}
elementForMarker(marker)
{
return this._markerElementMap.get(marker) || null;
}
showScanner(time)
{
if (!this._scannerMarker) {
this._scannerMarker = new WI.TimelineMarker(time, WI.TimelineMarker.Type.Scanner);
this.addMarker(this._scannerMarker);
}
this._scannerMarker.time = time;
}
hideScanner()
{
if (this._scannerMarker)
this._scannerMarker.time = -1;
}
updateLayoutIfNeeded(layoutReason)
{
// If a layout is pending we can let the base class handle it and return, since that will update
// markers and the selection at the same time.
if (this.layoutPending) {
super.updateLayoutIfNeeded(layoutReason);
return;
}
let visibleWidth = this._recalculate();
if (visibleWidth <= 0)
return;
if (this._scheduledMarkerLayoutUpdateIdentifier)
this._updateMarkers(visibleWidth, this.duration);
if (this._scheduledSelectionLayoutUpdateIdentifier)
this._updateSelection(visibleWidth, this.duration);
}
needsLayout(layoutReason)
{
if (this.layoutPending)
return;
if (this._scheduledMarkerLayoutUpdateIdentifier) {
cancelAnimationFrame(this._scheduledMarkerLayoutUpdateIdentifier);
this._scheduledMarkerLayoutUpdateIdentifier = undefined;
}
if (this._scheduledSelectionLayoutUpdateIdentifier) {
cancelAnimationFrame(this._scheduledSelectionLayoutUpdateIdentifier);
this._scheduledSelectionLayoutUpdateIdentifier = undefined;
}
super.needsLayout(layoutReason);
}
// Protected
layout()
{
let visibleWidth = this._recalculate();
if (visibleWidth <= 0)
return;
let duration = this.duration;
let pixelsPerSecond = visibleWidth / duration;
// Calculate a divider count based on the maximum allowed divider density.
let dividerCount = Math.round(visibleWidth / WI.TimelineRuler.MinimumDividerSpacing);
let sliceTime;
if (this._endTimePinned || !this._currentSliceTime) {
// Calculate the slice time based on the rough divider count and the time span.
sliceTime = duration / dividerCount;
// Snap the slice time to a nearest number (e.g. 0.1, 0.2, 0.5, 1, 2, 5, 10, 20, 50, etc.)
sliceTime = Math.pow(10, Math.ceil(Math.log(sliceTime) / Math.LN10));
if (sliceTime * pixelsPerSecond >= 5 * WI.TimelineRuler.MinimumDividerSpacing)
sliceTime = sliceTime / 5;
if (sliceTime * pixelsPerSecond >= 2 * WI.TimelineRuler.MinimumDividerSpacing)
sliceTime = sliceTime / 2;
this._currentSliceTime = sliceTime;
} else {
// Reuse the last slice time since the time duration does not scale to fit when the end time isn't pinned.
sliceTime = this._currentSliceTime;
}
// Calculate the divider count now based on the final slice time.
dividerCount = Math.floor(visibleWidth * this.secondsPerPixel / sliceTime);
let firstDividerTime = (Math.ceil((this._startTime - this._zeroTime) / sliceTime) * sliceTime) + this._zeroTime;
let lastDividerTime = firstDividerTime + sliceTime * dividerCount;
// Make an extra divider in case the last one is partially visible.
if (!this._endTimePinned)
++dividerCount;
let dividerData = {
count: dividerCount,
firstTime: firstDividerTime,
lastTime: lastDividerTime,
};
if (Object.shallowEqual(dividerData, this._currentDividers)) {
this._updateMarkers(visibleWidth, duration);
this._updateSelection(visibleWidth, duration);
return;
}
this._currentDividers = dividerData;
let markerDividers = this._markersElement.querySelectorAll("." + WI.TimelineRuler.DividerElementStyleClassName);
let dividerElement = this._headerElement.firstChild;
for (var i = 0; i <= dividerCount; ++i) {
if (!dividerElement) {
dividerElement = document.createElement("div");
dividerElement.className = WI.TimelineRuler.DividerElementStyleClassName;
this._headerElement.appendChild(dividerElement);
let labelElement = document.createElement("div");
labelElement.className = WI.TimelineRuler.DividerLabelElementStyleClassName;
dividerElement.appendChild(labelElement);
}
let markerDividerElement = markerDividers[i];
if (!markerDividerElement) {
markerDividerElement = document.createElement("div");
markerDividerElement.className = WI.TimelineRuler.DividerElementStyleClassName;
this._markersElement.appendChild(markerDividerElement);
}
let dividerTime = firstDividerTime + (sliceTime * i);
let newPosition = (dividerTime - this._startTime) / duration;
if (!this._allowsClippedLabels) {
// Don't allow dividers under 0% where they will be completely hidden.
if (newPosition < 0)
continue;
// When over 100% it is time to stop making/updating dividers.
if (newPosition > 1)
break;
// Don't allow the left-most divider spacing to be so tight it clips.
if ((newPosition * visibleWidth) < WI.TimelineRuler.MinimumLeftDividerSpacing)
continue;
}
let property = WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL ? "right" : "left";
this._updatePositionOfElement(dividerElement, newPosition, visibleWidth, property);
this._updatePositionOfElement(markerDividerElement, newPosition, visibleWidth, property);
console.assert(dividerElement.firstChild.classList.contains(WI.TimelineRuler.DividerLabelElementStyleClassName));
dividerElement.firstChild.textContent = isNaN(dividerTime) ? "" : this._formatDividerLabelText(dividerTime - this._zeroTime);
dividerElement = dividerElement.nextSibling;
}
// Remove extra dividers.
while (dividerElement) {
let nextDividerElement = dividerElement.nextSibling;
dividerElement.remove();
dividerElement = nextDividerElement;
}
for (; i < markerDividers.length; ++i)
markerDividers[i].remove();
this._updateMarkers(visibleWidth, duration);
this._updateSelection(visibleWidth, duration);
}
sizeDidChange()
{
this._cachedClientWidth = this.element.clientWidth;
}
// Private
_needsMarkerLayout()
{
// If layout is scheduled, abort since markers will be updated when layout happens.
if (this.layoutPending)
return;
if (this._scheduledMarkerLayoutUpdateIdentifier)
return;
this._scheduledMarkerLayoutUpdateIdentifier = requestAnimationFrame(() => {
this._scheduledMarkerLayoutUpdateIdentifier = undefined;
let visibleWidth = this._cachedClientWidth;
if (visibleWidth <= 0)
return;
this._updateMarkers(visibleWidth, this.duration);
});
}
_needsSelectionLayout()
{
if (!this._allowsTimeRangeSelection)
return;
// If layout is scheduled, abort since the selection will be updated when layout happens.
if (this.layoutPending)
return;
if (this._scheduledSelectionLayoutUpdateIdentifier)
return;
this._scheduledSelectionLayoutUpdateIdentifier = requestAnimationFrame(() => {
this._scheduledSelectionLayoutUpdateIdentifier = undefined;
let visibleWidth = this._cachedClientWidth;
if (visibleWidth <= 0)
return;
this._updateSelection(visibleWidth, this.duration);
});
}
_recalculate()
{
let visibleWidth = this._cachedClientWidth;
if (visibleWidth <= 0)
return 0;
let duration;
if (this._endTimePinned)
duration = this._endTime - this._startTime;
else
duration = visibleWidth * this._secondsPerPixel;
this._secondsPerPixel = duration / visibleWidth;
if (!this._endTimePinned)
this._endTime = this._startTime + (visibleWidth * this._secondsPerPixel);
return visibleWidth;
}
_updatePositionOfElement(element, newPosition, visibleWidth, property)
{
newPosition *= this._endTimePinned ? 100 : visibleWidth;
let newPositionAprox = Math.round(newPosition * 100);
let currentPositionAprox = Math.round(parseFloat(element.style[property]) * 100);
if (currentPositionAprox !== newPositionAprox)
element.style[property] = (newPositionAprox / 100) + (this._endTimePinned ? "%" : "px");
}
_updateMarkers(visibleWidth, duration)
{
if (this._scheduledMarkerLayoutUpdateIdentifier) {
cancelAnimationFrame(this._scheduledMarkerLayoutUpdateIdentifier);
this._scheduledMarkerLayoutUpdateIdentifier = undefined;
}
for (let [marker, markerElement] of this._markerElementMap) {
if (marker.time < 0) {
markerElement.remove();
continue;
}
let newPosition = (marker.time - this._startTime) / duration;
let property = WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL ? "right" : "left";
this._updatePositionOfElement(markerElement, newPosition, visibleWidth, property);
if (!markerElement.parentNode)
this._markersElement.appendChild(markerElement);
}
}
_updateSelection(visibleWidth, duration)
{
if (this._scheduledSelectionLayoutUpdateIdentifier) {
cancelAnimationFrame(this._scheduledSelectionLayoutUpdateIdentifier);
this._scheduledSelectionLayoutUpdateIdentifier = undefined;
}
this.element.classList.toggle("allows-time-range-selection", this._allowsTimeRangeSelection);
if (!this._allowsTimeRangeSelection)
return;
this.element.classList.toggle("selection-hidden", this.entireRangeSelected);
if (this.entireRangeSelected) {
this._dispatchTimeRangeSelectionChangedEvent();
return;
}
let startTimeClamped = this._selectionStartTime < this._startTime || this._selectionStartTime > this._endTime;
let endTimeClamped = this._selectionEndTime < this._startTime || this._selectionEndTime > this._endTime;
this.element.classList.toggle("both-handles-clamped", startTimeClamped && endTimeClamped);
let formattedStartTimeText = this._formatDividerLabelText(this._selectionStartTime - this._zeroTime);
let formattedEndTimeText = this._formatDividerLabelText(this._selectionEndTime - this._zeroTime);
let startProperty = WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL ? "right" : "left";
let newStartPosition = Number.constrain((this._selectionStartTime - this._startTime) / duration, 0, 1);
this._updatePositionOfElement(this._leftShadedAreaElement, newStartPosition, visibleWidth, "width");
this._updatePositionOfElement(this._leftSelectionHandleElement, newStartPosition, visibleWidth, startProperty);
this._updatePositionOfElement(this._selectionDragElement, newStartPosition, visibleWidth, startProperty);
this._leftSelectionHandleElement.classList.toggle("clamped", startTimeClamped);
this._leftSelectionHandleElement.classList.toggle("hidden", startTimeClamped && endTimeClamped && this._selectionStartTime < this._startTime);
this._leftSelectionHandleElement.title = formattedStartTimeText;
let endProperty = WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL ? "left" : "right";
let newEndPosition = 1 - Number.constrain((this._selectionEndTime - this._startTime) / duration, 0, 1);
this._updatePositionOfElement(this._rightShadedAreaElement, newEndPosition, visibleWidth, "width");
this._updatePositionOfElement(this._rightSelectionHandleElement, newEndPosition, visibleWidth, endProperty);
this._updatePositionOfElement(this._selectionDragElement, newEndPosition, visibleWidth, endProperty);
this._rightSelectionHandleElement.classList.toggle("clamped", endTimeClamped);
this._rightSelectionHandleElement.classList.toggle("hidden", startTimeClamped && endTimeClamped && this._selectionEndTime > this._endTime);
this._rightSelectionHandleElement.title = formattedEndTimeText;
if (!this._selectionDragElement.parentNode) {
this.element.appendChild(this._selectionDragElement);
this.element.appendChild(this._leftShadedAreaElement);
this.element.appendChild(this._leftSelectionHandleElement);
this.element.appendChild(this._rightShadedAreaElement);
this.element.appendChild(this._rightSelectionHandleElement);
}
this._dispatchTimeRangeSelectionChangedEvent();
}
_formatDividerLabelText(value)
{
if (this._formatLabelCallback)
return this._formatLabelCallback(value);
return Number.secondsToString(value, true);
}
_snapValue(value)
{
if (!value || !this.snapInterval)
return value;
return Math.round(value / this.snapInterval) * this.snapInterval;
}
_dispatchTimeRangeSelectionChangedEvent()
{
if (!this._timeRangeSelectionChanged)
return;
this._timeRangeSelectionChanged = false;
this.dispatchEventToListeners(WI.TimelineRuler.Event.TimeRangeSelectionChanged);
}
_timelineMarkerTimeChanged()
{
this._needsMarkerLayout();
}
_shouldIgnoreMicroMovement(event)
{
if (this._mousePassedMicroMovementTest)
return false;
let pixels = Math.abs(event.pageX - this._mouseStartX);
if (pixels <= 4)
return true;
this._mousePassedMicroMovementTest = true;
return false;
}
_handleClick(event)
{
if (!this._enabled)
return;
if (this._mouseMoved)
return;
for (let newTarget of document.elementsFromPoint(event.pageX, event.pageY)) {
if (!newTarget || typeof newTarget.click !== "function")
continue;
if (this.element.contains(newTarget))
continue;
// Clone the event to dispatch it on the new element.
let newEvent = new event.constructor(event.type, event);
newTarget.dispatchEvent(newEvent);
if (newEvent.__timelineRecordClickEventHandled)
event.stop();
return;
}
}
_handleDoubleClick(event)
{
if (this.entireRangeSelected)
return;
this.selectEntireRange();
}
_handleMouseDown(event)
{
// Only handle left mouse clicks.
if (event.button !== 0 || event.ctrlKey)
return;
this._selectionIsMove = event.target === this._selectionDragElement;
this._rulerBoundingClientRect = this.element.getBoundingClientRect();
if (this._selectionIsMove) {
this._lastMousePosition = event.pageX;
var selectionDragElementRect = this._selectionDragElement.getBoundingClientRect();
this._moveSelectionMaximumLeftOffset = this._rulerBoundingClientRect.left + (event.pageX - selectionDragElementRect.left);
this._moveSelectionMaximumRightOffset = this._rulerBoundingClientRect.right - (selectionDragElementRect.right - event.pageX);
} else {
if (WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL)
this._mouseDownPosition = this._rulerBoundingClientRect.right - event.pageX;
else
this._mouseDownPosition = event.pageX - this._rulerBoundingClientRect.left;
}
this._mouseMoved = false;
this._mousePassedMicroMovementTest = false;
this._mouseStartX = event.pageX;
this._mouseMoveEventListener = this._handleMouseMove.bind(this);
this._mouseUpEventListener = this._handleMouseUp.bind(this);
// Register these listeners on the document so we can track the mouse if it leaves the ruler.
document.addEventListener("mousemove", this._mouseMoveEventListener);
document.addEventListener("mouseup", this._mouseUpEventListener);
event.preventDefault();
event.stopPropagation();
}
_handleMouseMove(event)
{
console.assert(event.button === 0);
if (this._shouldIgnoreMicroMovement(event))
return;
this._mouseMoved = true;
let isRTL = WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL;
let currentMousePosition;
if (this._selectionIsMove) {
currentMousePosition = Math.max(this._moveSelectionMaximumLeftOffset, Math.min(this._moveSelectionMaximumRightOffset, event.pageX));
let positionDelta = 0;
if (isRTL)
positionDelta = this._lastMousePosition - currentMousePosition;
else
positionDelta = currentMousePosition - this._lastMousePosition;
let offsetTime = positionDelta * this.secondsPerPixel;
let selectionDuration = this.selectionEndTime - this.selectionStartTime;
let oldSelectionStartTime = this.selectionStartTime;
this.selectionStartTime = Math.max(this.startTime, Math.min(this.selectionStartTime + offsetTime, this.endTime - selectionDuration));
this.selectionEndTime = this.selectionStartTime + selectionDuration;
if (this.snapInterval) {
// When snapping we need to check the mouse position delta relative to the last snap, rather than the
// last mouse move. If a snap occurs we adjust for the amount the cursor drifted, so that the mouse
// position relative to the selection remains constant.
let snapOffset = this.selectionStartTime - oldSelectionStartTime;
if (!snapOffset)
return;
let positionDrift = (offsetTime - snapOffset * this.snapInterval) / this.secondsPerPixel;
currentMousePosition -= positionDrift;
}
this._lastMousePosition = currentMousePosition;
} else {
if (isRTL)
currentMousePosition = this._rulerBoundingClientRect.right - event.pageX;
else
currentMousePosition = event.pageX - this._rulerBoundingClientRect.left;
this.selectionStartTime = Math.max(this.startTime, this.startTime + (Math.min(currentMousePosition, this._mouseDownPosition) * this.secondsPerPixel));
this.selectionEndTime = Math.min(this.startTime + (Math.max(currentMousePosition, this._mouseDownPosition) * this.secondsPerPixel), this.endTime);
// Turn on col-resize cursor style once dragging begins, rather than on the initial mouse down.
this.element.classList.add(WI.TimelineRuler.ResizingSelectionStyleClassName);
}
this._updateSelection(this._cachedClientWidth, this.duration);
event.preventDefault();
event.stopPropagation();
}
_handleMouseUp(event)
{
console.assert(event.button === 0);
if (!this._selectionIsMove) {
this.element.classList.remove(WI.TimelineRuler.ResizingSelectionStyleClassName);
if (this.selectionEndTime - this.selectionStartTime < this.minimumSelectionDuration) {
// The section is smaller than allowed, grow in the direction of the drag to meet the minumum.
let currentMousePosition = 0;
if (WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL)
currentMousePosition = this._rulerBoundingClientRect.right - event.pageX;
else
currentMousePosition = event.pageX - this._rulerBoundingClientRect.left;
if (currentMousePosition > this._mouseDownPosition) {
this.selectionEndTime = Math.min(this.selectionStartTime + this.minimumSelectionDuration, this.endTime);
this.selectionStartTime = this.selectionEndTime - this.minimumSelectionDuration;
} else {
this.selectionStartTime = Math.max(this.startTime, this.selectionEndTime - this.minimumSelectionDuration);
this.selectionEndTime = this.selectionStartTime + this.minimumSelectionDuration;
}
}
}
this._dispatchTimeRangeSelectionChangedEvent();
document.removeEventListener("mousemove", this._mouseMoveEventListener);
document.removeEventListener("mouseup", this._mouseUpEventListener);
delete this._mouseMoveEventListener;
delete this._mouseUpEventListener;
delete this._mouseDownPosition;
delete this._lastMousePosition;
delete this._selectionIsMove;
delete this._rulerBoundingClientRect;
delete this._moveSelectionMaximumLeftOffset;
delete this._moveSelectionMaximumRightOffset;
event.preventDefault();
event.stopPropagation();
}
_handleSelectionHandleMouseDown(event)
{
// Only handle left mouse clicks.
if (event.button !== 0 || event.ctrlKey)
return;
this._dragHandleIsStartTime = event.target === this._leftSelectionHandleElement;
if (WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL)
this._mouseDownPosition = this.element.totalOffsetRight - event.pageX;
else
this._mouseDownPosition = event.pageX - this.element.totalOffsetLeft;
this._selectionHandleMouseMoveEventListener = this._handleSelectionHandleMouseMove.bind(this);
this._selectionHandleMouseUpEventListener = this._handleSelectionHandleMouseUp.bind(this);
// Register these listeners on the document so we can track the mouse if it leaves the ruler.
document.addEventListener("mousemove", this._selectionHandleMouseMoveEventListener);
document.addEventListener("mouseup", this._selectionHandleMouseUpEventListener);
this.element.classList.add(WI.TimelineRuler.ResizingSelectionStyleClassName);
event.preventDefault();
event.stopPropagation();
}
_handleSelectionHandleMouseMove(event)
{
console.assert(event.button === 0);
let currentMousePosition = 0;
if (WI.resolvedLayoutDirection() === WI.LayoutDirection.RTL)
currentMousePosition = this.element.totalOffsetRight - event.pageX;
else
currentMousePosition = event.pageX - this.element.totalOffsetLeft;
let currentTime = this.startTime + (currentMousePosition * this.secondsPerPixel);
if (this.snapInterval)
currentTime = this._snapValue(currentTime);
if (event.altKey && !event.ctrlKey && !event.metaKey && !event.shiftKey) {
// Resize the selection on both sides when the Option keys is held down.
if (this._dragHandleIsStartTime) {
let timeDifference = currentTime - this.selectionStartTime;
this.selectionStartTime = Math.max(this.startTime, Math.min(currentTime, this.selectionEndTime - this.minimumSelectionDuration));
this.selectionEndTime = Math.min(Math.max(this.selectionStartTime + this.minimumSelectionDuration, this.selectionEndTime - timeDifference), this.endTime);
} else {
let timeDifference = currentTime - this.selectionEndTime;
this.selectionEndTime = Math.min(Math.max(this.selectionStartTime + this.minimumSelectionDuration, currentTime), this.endTime);
this.selectionStartTime = Math.max(this.startTime, Math.min(this.selectionStartTime - timeDifference, this.selectionEndTime - this.minimumSelectionDuration));
}
} else {
// Resize the selection on side being dragged.
if (this._dragHandleIsStartTime)
this.selectionStartTime = Math.max(this.startTime, Math.min(currentTime, this.selectionEndTime - this.minimumSelectionDuration));
else
this.selectionEndTime = Math.min(Math.max(this.selectionStartTime + this.minimumSelectionDuration, currentTime), this.endTime);
}
this._updateSelection(this._cachedClientWidth, this.duration);
event.preventDefault();
event.stopPropagation();
}
_handleSelectionHandleMouseUp(event)
{
console.assert(event.button === 0);
this.element.classList.remove(WI.TimelineRuler.ResizingSelectionStyleClassName);
document.removeEventListener("mousemove", this._selectionHandleMouseMoveEventListener);
document.removeEventListener("mouseup", this._selectionHandleMouseUpEventListener);
delete this._selectionHandleMouseMoveEventListener;
delete this._selectionHandleMouseUpEventListener;
delete this._dragHandleIsStartTime;
delete this._mouseDownPosition;
event.preventDefault();
event.stopPropagation();
}
};
WI.TimelineRuler.MinimumLeftDividerSpacing = 48;
WI.TimelineRuler.MinimumDividerSpacing = 64;
WI.TimelineRuler.ResizingSelectionStyleClassName = "resizing-selection";
WI.TimelineRuler.DividerElementStyleClassName = "divider";
WI.TimelineRuler.DividerLabelElementStyleClassName = "label";
WI.TimelineRuler.Event = {
TimeRangeSelectionChanged: "time-ruler-time-range-selection-changed"
};