| /* |
| * Copyright (C) 2013 Google 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: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT |
| * OWNER OR 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. |
| */ |
| |
| /** |
| * @unrestricted |
| */ |
| PerfUI.OverviewGrid = class { |
| /** |
| * @param {string} prefix |
| * @param {!PerfUI.TimelineGrid.Calculator=} calculator |
| */ |
| constructor(prefix, calculator) { |
| this.element = createElement('div'); |
| this.element.id = prefix + '-overview-container'; |
| |
| this._grid = new PerfUI.TimelineGrid(); |
| this._grid.element.id = prefix + '-overview-grid'; |
| this._grid.setScrollTop(0); |
| |
| this.element.appendChild(this._grid.element); |
| |
| this._window = new PerfUI.OverviewGrid.Window(this.element, this._grid.dividersLabelBarElement, calculator); |
| } |
| |
| /** |
| * @return {number} |
| */ |
| clientWidth() { |
| return this.element.clientWidth; |
| } |
| |
| /** |
| * @param {!PerfUI.TimelineGrid.Calculator} calculator |
| */ |
| updateDividers(calculator) { |
| this._grid.updateDividers(calculator); |
| } |
| |
| /** |
| * @param {!Array.<!Element>} dividers |
| */ |
| addEventDividers(dividers) { |
| this._grid.addEventDividers(dividers); |
| } |
| |
| removeEventDividers() { |
| this._grid.removeEventDividers(); |
| } |
| |
| reset() { |
| this._window.reset(); |
| } |
| |
| /** |
| * @return {number} |
| */ |
| windowLeft() { |
| return this._window.windowLeft; |
| } |
| |
| /** |
| * @return {number} |
| */ |
| windowRight() { |
| return this._window.windowRight; |
| } |
| |
| /** |
| * @param {number} left |
| * @param {number} right |
| */ |
| setWindow(left, right) { |
| this._window._setWindow(left, right); |
| } |
| |
| /** |
| * @param {symbol} eventType |
| * @param {function(!Common.Event)} listener |
| * @param {!Object=} thisObject |
| * @return {!Common.EventTarget.EventDescriptor} |
| */ |
| addEventListener(eventType, listener, thisObject) { |
| return this._window.addEventListener(eventType, listener, thisObject); |
| } |
| |
| /** |
| * @param {?function(!Event):boolean} clickHandler |
| */ |
| setClickHandler(clickHandler) { |
| this._window.setClickHandler(clickHandler); |
| } |
| |
| /** |
| * @param {number} zoomFactor |
| * @param {number} referencePoint |
| */ |
| zoom(zoomFactor, referencePoint) { |
| this._window._zoom(zoomFactor, referencePoint); |
| } |
| |
| /** |
| * @param {boolean} enabled |
| */ |
| setResizeEnabled(enabled) { |
| this._window.setEnabled(enabled); |
| } |
| }; |
| |
| PerfUI.OverviewGrid.MinSelectableSize = 14; |
| |
| PerfUI.OverviewGrid.WindowScrollSpeedFactor = .3; |
| |
| PerfUI.OverviewGrid.ResizerOffset = 3.5; // half pixel because offset values are not rounded but ceiled |
| |
| PerfUI.OverviewGrid.OffsetFromWindowEnds = 10; |
| |
| /** |
| * @unrestricted |
| */ |
| PerfUI.OverviewGrid.Window = class extends Common.Object { |
| /** |
| * @param {!Element} parentElement |
| * @param {!Element=} dividersLabelBarElement |
| * @param {!PerfUI.TimelineGrid.Calculator=} calculator |
| */ |
| constructor(parentElement, dividersLabelBarElement, calculator) { |
| super(); |
| this._parentElement = parentElement; |
| UI.ARIAUtils.markAsGroup(this._parentElement); |
| this._calculator = calculator; |
| |
| UI.ARIAUtils.setAccessibleName(this._parentElement, ls`Overview grid window`); |
| |
| UI.installDragHandle( |
| this._parentElement, this._startWindowSelectorDragging.bind(this), this._windowSelectorDragging.bind(this), |
| this._endWindowSelectorDragging.bind(this), 'text', null); |
| if (dividersLabelBarElement) { |
| UI.installDragHandle( |
| dividersLabelBarElement, this._startWindowDragging.bind(this), this._windowDragging.bind(this), null, |
| '-webkit-grabbing', '-webkit-grab'); |
| } |
| |
| this._parentElement.addEventListener('mousewheel', this._onMouseWheel.bind(this), true); |
| this._parentElement.addEventListener('dblclick', this._resizeWindowMaximum.bind(this), true); |
| UI.appendStyle(this._parentElement, 'perf_ui/overviewGrid.css'); |
| |
| this._leftResizeElement = parentElement.createChild('div', 'overview-grid-window-resizer'); |
| UI.installDragHandle( |
| this._leftResizeElement, this._resizerElementStartDragging.bind(this), |
| this._leftResizeElementDragging.bind(this), null, 'ew-resize'); |
| this._rightResizeElement = parentElement.createChild('div', 'overview-grid-window-resizer'); |
| UI.installDragHandle( |
| this._rightResizeElement, this._resizerElementStartDragging.bind(this), |
| this._rightResizeElementDragging.bind(this), null, 'ew-resize'); |
| |
| UI.ARIAUtils.setAccessibleName(this._leftResizeElement, ls`Left Resizer`); |
| UI.ARIAUtils.markAsSlider(this._leftResizeElement); |
| this._leftResizeElement.tabIndex = 0; |
| this._leftResizeElement.addEventListener('keydown', event => this._handleKeyboardResizing(event, false)); |
| |
| UI.ARIAUtils.setAccessibleName(this._rightResizeElement, ls`Right Resizer`); |
| UI.ARIAUtils.markAsSlider(this._rightResizeElement); |
| this._rightResizeElement.tabIndex = 0; |
| this._rightResizeElement.addEventListener('keydown', event => this._handleKeyboardResizing(event, true)); |
| this._rightResizeElement.addEventListener('focus', this._onRightResizeElementFocused.bind(this)); |
| |
| this._leftCurtainElement = parentElement.createChild('div', 'window-curtain-left'); |
| this._rightCurtainElement = parentElement.createChild('div', 'window-curtain-right'); |
| this.reset(); |
| } |
| |
| _onRightResizeElementFocused() { |
| // To prevent browser focus from scrolling the element into view and shifting the contents of the strip |
| this._parentElement.scrollLeft = 0; |
| } |
| |
| reset() { |
| this.windowLeft = 0.0; |
| this.windowRight = 1.0; |
| this.setEnabled(true); |
| this._updateCurtains(); |
| } |
| |
| /** |
| * @param {boolean} enabled |
| */ |
| setEnabled(enabled) { |
| this._enabled = enabled; |
| } |
| |
| /** |
| * @param {?function(!Event):boolean} clickHandler |
| */ |
| setClickHandler(clickHandler) { |
| this._clickHandler = clickHandler; |
| } |
| |
| /** |
| * @param {!Event} event |
| */ |
| _resizerElementStartDragging(event) { |
| if (!this._enabled) { |
| return false; |
| } |
| this._resizerParentOffsetLeft = event.pageX - event.offsetX - event.target.offsetLeft; |
| event.stopPropagation(); |
| return true; |
| } |
| |
| /** |
| * @param {!Event} event |
| */ |
| _leftResizeElementDragging(event) { |
| this._resizeWindowLeft(event.pageX - this._resizerParentOffsetLeft); |
| event.preventDefault(); |
| } |
| |
| /** |
| * @param {!Event} event |
| */ |
| _rightResizeElementDragging(event) { |
| this._resizeWindowRight(event.pageX - this._resizerParentOffsetLeft); |
| event.preventDefault(); |
| } |
| |
| /** |
| * @param {!Event} event |
| * @param {boolean=} moveRightResizer |
| */ |
| _handleKeyboardResizing(event, moveRightResizer) { |
| let increment = false; |
| if (event.key === 'ArrowLeft' || event.key === 'ArrowRight') { |
| if (event.key === 'ArrowRight') { |
| increment = true; |
| } |
| const newPos = this._getNewResizerPosition(event.target.offsetLeft, increment, event.ctrlKey); |
| if (moveRightResizer) { |
| this._resizeWindowRight(newPos); |
| } else { |
| this._resizeWindowLeft(newPos); |
| } |
| event.consume(true); |
| } |
| } |
| |
| /** |
| * @param {number} offset |
| * @param {boolean=} increment |
| * @param {boolean=} ctrlPressed |
| * @return {number} |
| */ |
| _getNewResizerPosition(offset, increment, ctrlPressed) { |
| let newPos; |
| // We shift by 10px if the ctrlKey is pressed and 2 otherwise. 1px shifts result in noOp due to rounding in _updateCurtains |
| let pixelsToShift = ctrlPressed ? 10 : 2; |
| pixelsToShift = increment ? pixelsToShift : -Math.abs(pixelsToShift); |
| const offsetLeft = offset + PerfUI.OverviewGrid.ResizerOffset; |
| newPos = offsetLeft + pixelsToShift; |
| if (increment && newPos < PerfUI.OverviewGrid.OffsetFromWindowEnds) { |
| // When incrementing, snap to the window offset value (10px) if the new position is between 0px and 10px |
| newPos = PerfUI.OverviewGrid.OffsetFromWindowEnds; |
| } else if (!increment && newPos > this._parentElement.clientWidth - PerfUI.OverviewGrid.OffsetFromWindowEnds) { |
| // When decrementing, snap to the window offset value (10px) from the rightmost side if the new position is within 10px from the end. |
| newPos = this._parentElement.clientWidth - PerfUI.OverviewGrid.OffsetFromWindowEnds; |
| } |
| |
| return newPos; |
| } |
| |
| /** |
| * @param {!Event} event |
| * @return {boolean} |
| */ |
| _startWindowSelectorDragging(event) { |
| if (!this._enabled) { |
| return false; |
| } |
| this._offsetLeft = this._parentElement.totalOffsetLeft(); |
| const position = event.x - this._offsetLeft; |
| this._overviewWindowSelector = new PerfUI.OverviewGrid.WindowSelector(this._parentElement, position); |
| return true; |
| } |
| |
| /** |
| * @param {!Event} event |
| */ |
| _windowSelectorDragging(event) { |
| this._overviewWindowSelector._updatePosition(event.x - this._offsetLeft); |
| event.preventDefault(); |
| } |
| |
| /** |
| * @param {!Event} event |
| */ |
| _endWindowSelectorDragging(event) { |
| const window = this._overviewWindowSelector._close(event.x - this._offsetLeft); |
| delete this._overviewWindowSelector; |
| const clickThreshold = 3; |
| if (window.end - window.start < clickThreshold) { |
| if (this._clickHandler && this._clickHandler.call(null, event)) { |
| return; |
| } |
| const middle = window.end; |
| window.start = Math.max(0, middle - PerfUI.OverviewGrid.MinSelectableSize / 2); |
| window.end = Math.min(this._parentElement.clientWidth, middle + PerfUI.OverviewGrid.MinSelectableSize / 2); |
| } else if (window.end - window.start < PerfUI.OverviewGrid.MinSelectableSize) { |
| if (this._parentElement.clientWidth - window.end > PerfUI.OverviewGrid.MinSelectableSize) { |
| window.end = window.start + PerfUI.OverviewGrid.MinSelectableSize; |
| } else { |
| window.start = window.end - PerfUI.OverviewGrid.MinSelectableSize; |
| } |
| } |
| this._setWindowPosition(window.start, window.end); |
| } |
| |
| /** |
| * @param {!Event} event |
| * @return {boolean} |
| */ |
| _startWindowDragging(event) { |
| this._dragStartPoint = event.pageX; |
| this._dragStartLeft = this.windowLeft; |
| this._dragStartRight = this.windowRight; |
| event.stopPropagation(); |
| return true; |
| } |
| |
| /** |
| * @param {!Event} event |
| */ |
| _windowDragging(event) { |
| event.preventDefault(); |
| let delta = (event.pageX - this._dragStartPoint) / this._parentElement.clientWidth; |
| if (this._dragStartLeft + delta < 0) { |
| delta = -this._dragStartLeft; |
| } |
| |
| if (this._dragStartRight + delta > 1) { |
| delta = 1 - this._dragStartRight; |
| } |
| |
| this._setWindow(this._dragStartLeft + delta, this._dragStartRight + delta); |
| } |
| |
| /** |
| * @param {number} start |
| */ |
| _resizeWindowLeft(start) { |
| // Glue to edge. |
| if (start < PerfUI.OverviewGrid.OffsetFromWindowEnds) { |
| start = 0; |
| } else if (start > this._rightResizeElement.offsetLeft - 4) { |
| start = this._rightResizeElement.offsetLeft - 4; |
| } |
| this._setWindowPosition(start, null); |
| } |
| |
| /** |
| * @param {number} end |
| */ |
| _resizeWindowRight(end) { |
| // Glue to edge. |
| if (end > this._parentElement.clientWidth - PerfUI.OverviewGrid.OffsetFromWindowEnds) { |
| end = this._parentElement.clientWidth; |
| } else if (end < this._leftResizeElement.offsetLeft + PerfUI.OverviewGrid.MinSelectableSize) { |
| end = this._leftResizeElement.offsetLeft + PerfUI.OverviewGrid.MinSelectableSize; |
| } |
| this._setWindowPosition(null, end); |
| } |
| |
| _resizeWindowMaximum() { |
| this._setWindowPosition(0, this._parentElement.clientWidth); |
| } |
| |
| |
| /** |
| * @param {boolean=} leftSlider |
| * @return {number} |
| */ |
| _getRawSliderValue(leftSlider) { |
| const minimumValue = this._calculator.minimumBoundary(); |
| const valueSpan = this._calculator.maximumBoundary() - minimumValue; |
| if (leftSlider) { |
| return minimumValue + valueSpan * this.windowLeft; |
| } else { |
| return minimumValue + valueSpan * this.windowRight; |
| } |
| } |
| |
| /** |
| * @param {number} leftValue |
| * @param {number} rightValue |
| */ |
| _updateResizeElementPositionValue(leftValue, rightValue) { |
| const roundedLeftValue = leftValue.toFixed(2); |
| const roundedRightValue = rightValue.toFixed(2); |
| UI.ARIAUtils.setAriaValueNow(this._leftResizeElement, roundedLeftValue); |
| UI.ARIAUtils.setAriaValueNow(this._rightResizeElement, roundedRightValue); |
| |
| // Left and right sliders cannot be within 0.5% of each other (Range of AriaValueMin/Max/Now is from 0-100). |
| const leftResizeCeiling = roundedRightValue - 0.5; |
| const rightResizeFloor = Number(roundedLeftValue) + 0.5; |
| UI.ARIAUtils.setAriaValueMinMax(this._leftResizeElement, '0', leftResizeCeiling.toString()); |
| UI.ARIAUtils.setAriaValueMinMax(this._rightResizeElement, rightResizeFloor.toString(), '100'); |
| } |
| |
| _updateResizeElementPositionLabels() { |
| const startValue = this._calculator.formatValue(this._getRawSliderValue(/* leftSlider */ true)); |
| const endValue = this._calculator.formatValue(this._getRawSliderValue(/* leftSlider */ false)); |
| UI.ARIAUtils.setAriaValueText(this._leftResizeElement, String(startValue)); |
| UI.ARIAUtils.setAriaValueText(this._rightResizeElement, String(endValue)); |
| } |
| |
| /** |
| * @param {string} leftValue |
| * @param {string} rightValue |
| */ |
| _updateResizeElementPercentageLabels(leftValue, rightValue) { |
| UI.ARIAUtils.setAriaValueText(this._leftResizeElement, leftValue); |
| UI.ARIAUtils.setAriaValueText(this._rightResizeElement, rightValue); |
| } |
| |
| /** |
| * @return {{rawStartValue: number, rawEndValue: number}} |
| */ |
| _calculateWindowPosition() { |
| return { |
| rawStartValue: Number(this._getRawSliderValue(/* leftSlider */ true)), |
| rawEndValue: Number(this._getRawSliderValue(/* leftSlider */ false)) |
| }; |
| } |
| |
| /** |
| * @param {number} windowLeft |
| * @param {number} windowRight |
| */ |
| _setWindow(windowLeft, windowRight) { |
| this.windowLeft = windowLeft; |
| this.windowRight = windowRight; |
| this._updateCurtains(); |
| let windowPosition; |
| if (this._calculator) { |
| windowPosition = this._calculateWindowPosition(); |
| } |
| this.dispatchEventToListeners(PerfUI.OverviewGrid.Events.WindowChanged, windowPosition); |
| } |
| |
| _updateCurtains() { |
| let left = this.windowLeft; |
| let right = this.windowRight; |
| const width = right - left; |
| |
| // OverviewGrids that are instantiated before the parentElement is shown will have a parent element client width of 0 which throws off the 'factor' calculation |
| if (this._parentElement.clientWidth !== 0) { |
| // We allow actual time window to be arbitrarily small but don't want the UI window to be too small. |
| const widthInPixels = width * this._parentElement.clientWidth; |
| const minWidthInPixels = PerfUI.OverviewGrid.MinSelectableSize / 2; |
| if (widthInPixels < minWidthInPixels) { |
| const factor = minWidthInPixels / widthInPixels; |
| left = ((this.windowRight + this.windowLeft) - width * factor) / 2; |
| right = ((this.windowRight + this.windowLeft) + width * factor) / 2; |
| } |
| } |
| const leftResizerPercLeftOffset = (100 * left); |
| const rightResizerPercLeftOffset = (100 * right); |
| const rightResizerPercRightOffset = (100 - (100 * right)); |
| |
| const leftResizerPercLeftOffsetString = leftResizerPercLeftOffset + '%'; |
| const rightResizerPercLeftOffsetString = rightResizerPercLeftOffset + '%'; |
| |
| this._leftResizeElement.style.left = leftResizerPercLeftOffsetString; |
| this._rightResizeElement.style.left = rightResizerPercLeftOffsetString; |
| |
| this._leftCurtainElement.style.width = leftResizerPercLeftOffsetString; |
| this._rightCurtainElement.style.width = rightResizerPercRightOffset + '%'; |
| |
| this._updateResizeElementPositionValue(leftResizerPercLeftOffset, rightResizerPercLeftOffset); |
| if (this._calculator) { |
| this._updateResizeElementPositionLabels(); |
| } else { |
| this._updateResizeElementPercentageLabels(leftResizerPercLeftOffsetString, rightResizerPercLeftOffsetString); |
| } |
| } |
| |
| /** |
| * @param {?number} start |
| * @param {?number} end |
| */ |
| _setWindowPosition(start, end) { |
| const clientWidth = this._parentElement.clientWidth; |
| const windowLeft = typeof start === 'number' ? start / clientWidth : this.windowLeft; |
| const windowRight = typeof end === 'number' ? end / clientWidth : this.windowRight; |
| this._setWindow(windowLeft, windowRight); |
| } |
| |
| /** |
| * @param {!Event} event |
| */ |
| _onMouseWheel(event) { |
| if (!this._enabled) { |
| return; |
| } |
| if (typeof event.wheelDeltaY === 'number' && event.wheelDeltaY) { |
| const zoomFactor = 1.1; |
| const mouseWheelZoomSpeed = 1 / 120; |
| |
| const reference = event.offsetX / event.target.clientWidth; |
| this._zoom(Math.pow(zoomFactor, -event.wheelDeltaY * mouseWheelZoomSpeed), reference); |
| } |
| if (typeof event.wheelDeltaX === 'number' && event.wheelDeltaX) { |
| let offset = Math.round(event.wheelDeltaX * PerfUI.OverviewGrid.WindowScrollSpeedFactor); |
| const windowLeft = this._leftResizeElement.offsetLeft + PerfUI.OverviewGrid.ResizerOffset; |
| const windowRight = this._rightResizeElement.offsetLeft + PerfUI.OverviewGrid.ResizerOffset; |
| |
| if (windowLeft - offset < 0) { |
| offset = windowLeft; |
| } |
| |
| if (windowRight - offset > this._parentElement.clientWidth) { |
| offset = windowRight - this._parentElement.clientWidth; |
| } |
| |
| this._setWindowPosition(windowLeft - offset, windowRight - offset); |
| |
| event.preventDefault(); |
| } |
| } |
| |
| /** |
| * @param {number} factor |
| * @param {number} reference |
| */ |
| _zoom(factor, reference) { |
| let left = this.windowLeft; |
| let right = this.windowRight; |
| const windowSize = right - left; |
| let newWindowSize = factor * windowSize; |
| if (newWindowSize > 1) { |
| newWindowSize = 1; |
| factor = newWindowSize / windowSize; |
| } |
| left = reference + (left - reference) * factor; |
| left = Number.constrain(left, 0, 1 - newWindowSize); |
| |
| right = reference + (right - reference) * factor; |
| right = Number.constrain(right, newWindowSize, 1); |
| this._setWindow(left, right); |
| } |
| }; |
| |
| /** @enum {symbol} */ |
| PerfUI.OverviewGrid.Events = { |
| WindowChanged: Symbol('WindowChanged') |
| }; |
| |
| /** |
| * @unrestricted |
| */ |
| PerfUI.OverviewGrid.WindowSelector = class { |
| constructor(parent, position) { |
| this._startPosition = position; |
| this._width = parent.offsetWidth; |
| this._windowSelector = createElement('div'); |
| this._windowSelector.className = 'overview-grid-window-selector'; |
| this._windowSelector.style.left = this._startPosition + 'px'; |
| this._windowSelector.style.right = this._width - this._startPosition + 'px'; |
| parent.appendChild(this._windowSelector); |
| } |
| |
| _close(position) { |
| position = Math.max(0, Math.min(position, this._width)); |
| this._windowSelector.remove(); |
| return this._startPosition < position ? {start: this._startPosition, end: position} : |
| {start: position, end: this._startPosition}; |
| } |
| |
| _updatePosition(position) { |
| position = Math.max(0, Math.min(position, this._width)); |
| if (position < this._startPosition) { |
| this._windowSelector.style.left = position + 'px'; |
| this._windowSelector.style.right = this._width - this._startPosition + 'px'; |
| } else { |
| this._windowSelector.style.left = this._startPosition + 'px'; |
| this._windowSelector.style.right = this._width - position + 'px'; |
| } |
| } |
| }; |