File: ShaderProgramTreeElement.js

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/*
 * Copyright (C) 2017 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.ShaderProgramTreeElement = class ShaderProgramTreeElement extends WI.GeneralTreeElement
{
    constructor(shaderProgram)
    {
        console.assert(shaderProgram instanceof WI.ShaderProgram);

        const subtitle = null;
        super("shader-program", shaderProgram.displayName, subtitle, shaderProgram);

        // FIXME: add support for disabling/highlighting WebGPU shader pipelines.
        if (this.representedObject.canvas.isWebGL || this.representedObject.canvas.isWebGL2) {
            this._disabledImageElement = document.createElement("img");
            this._disabledImageElement.title = WI.UIString("Disable Program");
            this._disabledImageElement.addEventListener("click", this._disabledImageElementClicked.bind(this));
            this.status = this._disabledImageElement;
        }
    }

    // Protected

    onattach()
    {
        super.onattach();

        // FIXME: add support for disabling/highlighting WebGPU shader pipelines.
        if (this.representedObject.canvas.isWebGL || this.representedObject.canvas.isWebGL2) {
            this.representedObject.addEventListener(WI.ShaderProgram.Event.DisabledChanged, this._handleShaderProgramDisabledChanged, this);

            this.element.addEventListener("mouseover", this._handleMouseOver.bind(this));
            this.element.addEventListener("mouseout", this._handleMouseOut.bind(this));
        }
    }

    ondetach()
    {
        // FIXME: add support for disabling/highlighting WebGPU shader pipelines.
        if (this.representedObject.canvas.isWebGL || this.representedObject.canvas.isWebGL2)
            this.representedObject.removeEventListener(WI.ShaderProgram.Event.DisabledChanged, this._handleShaderProgramDisabledChanged, this);

        super.ondetach();
    }

    canSelectOnMouseDown(event)
    {
        if (this._disabledImageElement && this._disabledImageElement.contains(event.target))
            return false;
        return super.canSelectOnMouseDown(event);
    }

    populateContextMenu(contextMenu, event)
    {
        // FIXME: add support for disabling/highlighting WebGPU shader pipelines.
        if (this.representedObject.canvas.isWebGL || this.representedObject.canvas.isWebGL2) {
            let disabled = this.representedObject.disabled;
            contextMenu.appendItem(disabled ? WI.UIString("Enable Program") : WI.UIString("Disable Program"), () => {
                this.representedObject.disabled = !disabled;
            });

            contextMenu.appendSeparator();
        }

        super.populateContextMenu(contextMenu, event);
    }

    // Private

    _disabledImageElementClicked(event)
    {
        this.representedObject.disabled = !this.representedObject.disabled;
    }

    _handleShaderProgramDisabledChanged(event)
    {
        this._listItemNode.classList.toggle("disabled", !!this.representedObject.disabled);
        this._disabledImageElement.title = this.representedObject.disabled ? WI.UIString("Enable Program") : WI.UIString("Disable Program");
    }

    _handleMouseOver(event)
    {
        this.representedObject.showHighlight();
    }

    _handleMouseOut(event)
    {
        this.representedObject.hideHighlight();
    }
};