GlModelViewer/modules/glmv-prev.js

//Initialize globals
require('./glmv-mvconfig.js')
require('./glmv-hs.js')

/**
 * Use the OOui js library to create wikis-style menu
 * options on the preview edits page for interaction
 * with the model
 */
buildPreviewMenu = function() {
    let [_, origMetadata] = extractMvconfig()

    //Annotation Edit Controls
    const addHS = new OO.ui.ButtonWidget({
        icon: 'mapPinAdd',
        label: 'Add annotation',
        invisibleLabel: true,
        class: 'edit-button'
    })
    addHS.on('click', readyAddHotspot)
    addHS.setDisabled(true)

    const updateHS = new OO.ui.ButtonWidget({
        icon: 'reload',
        label: 'Update annotations',
        invisibleLabel: true
    })
    updateHS.on('click', readMvconfig)
    updateHS.setDisabled(true)

    const deleteHS = new OO.ui.ButtonWidget({
        icon: 'cancel',
        label: 'Delete annotation',
        invisibleLabel: true
    })
    deleteHS.on('click', readyDelHotspot)
    deleteHS.setDisabled(true)

    const setOptions = ['default', ...Object.keys(origMetadata.annotationSets)]
    let setOptionItems = []
    setOptions.forEach(opt => {
        setOptionItems.push(new OO.ui.MenuOptionWidget({data: opt, label: opt}))
    })

    const setSelectHS = new OO.ui.ButtonMenuSelectWidget({
        icon: 'mapTrail',
        label: 'Select annotation set',
        invisibleLabel: true,
        menu: {
            items: setOptionItems,
            width: 'min-content'
        },
        $overlay: $('#bodyContent')
    })
    setSelectHS.getMenu().on( 'choose', selSet => {
        selectAnnotationSet(selSet.data)
    })
    setSelectHS.setDisabled(true)

    const hotspotButtons = new OO.ui.ButtonGroupWidget({
        items: [ addHS, updateHS, deleteHS, setSelectHS ]
    })

    //View Edit Controls
    const downloadViewerImage = new OO.ui.ButtonWidget({
        icon: 'imageAdd',
        label: 'Download current image',
        invisibleLabel: true
    })
    downloadViewerImage.on('click', () => {
        downloadImage(mw.config.values.wgTitle)
    })
    downloadViewerImage.setDisabled(true)

    const setView = new OO.ui.ButtonWidget({
        icon: 'camera',
        label: 'Set Initial View',
        invisibleLabel: true
    })
    setView.on('click', writeCameraOrbit)
    setView.setDisabled(true)

    const setControl = new OO.ui.ButtonWidget({
        icon: 'hand',
        label: 'Toggle camera control',
        invisibleLabel: true
    })
    setControl.on('click', () => $('model-viewer')[0].toggleAttribute('camera-controls', toggleCameraControl()))
    setControl.setDisabled(true)

    //View Limit Controls
    const setMinYaw = new OO.ui.ButtonWidget({
        label: 'Min'
    })
    setMinYaw.on('click', () => {
        writeCameraLimit('yaw','min')
    })

    const setMaxYaw = new OO.ui.ButtonWidget({
        label: 'Max'
    })
    setMaxYaw.on('click', () => {
        writeCameraLimit('yaw','max')
    })

    const yawLimitButtons = new OO.ui.ButtonGroupWidget({
        items: [ setMinYaw, setMaxYaw ]
    })

    const labelYaw = new OO.ui.LabelWidget({
        label: "Yaw:"
    })

    const yawButtons = new OO.ui.HorizontalLayout({
        items: [
        labelYaw,
        yawLimitButtons
        ],
        id: 'yaw-limits'
    })

    const setMinPitch = new OO.ui.ButtonWidget({
        label: 'Min'
    })
    setMinPitch.on('click', () => {
        writeCameraLimit('pitch','min')
    })

    const setMaxPitch = new OO.ui.ButtonWidget({
        label: 'Max'
    })
    setMaxPitch.on('click', () => {
        writeCameraLimit('pitch','max')
    })

    const pitchLimitButtons = new OO.ui.ButtonGroupWidget({
        items: [ setMinPitch, setMaxPitch ]
    })

    const labelPitch = new OO.ui.LabelWidget({
        label: "Pitch:"
    })

    const pitchButtons = new OO.ui.HorizontalLayout({
        items: [
        labelPitch,
        pitchLimitButtons
        ],
        id: 'pitch-limits'
    })

    const setLims = new OO.ui.PopupButtonWidget({
        label: 'Set View Limits',
        invisibleLabel: true,
        icon: 'tableMergeCells',
        popup: {
            $content: yawButtons.$element.add(pitchButtons.$element),
            padded: true,
            position: 'above'
        },
        $overlay: $('#bodyContent')
    })
    setLims.setDisabled(true)

    const setViewConfig = [...Object.keys(origMetadata.viewerConfig)]
    let setViewItems = []
    setViewConfig.forEach(opt => {
        setViewItems.push(new OO.ui.MenuOptionWidget({data: opt, label: opt}))
    })

    const selectVC = new OO.ui.ButtonMenuSelectWidget({
        icon: 'eye',
        label: 'Select view configuration',
        invisibleLabel: true,
        menu: {
            items: setViewItems,
            width: 'min-content'
        },
        $overlay: $('#bodyContent')
    })
    selectVC.getMenu().on( 'choose', selSet => {
        selectViewConfig(selSet.data)
    })
    selectVC.setDisabled(true)

    const cameraButtons = new OO.ui.ButtonGroupWidget({
        items: [ downloadViewerImage, setControl, setView, setLims, selectVC ]
    })

    //Main Menu
    const modelMenu = new OO.ui.HorizontalLayout({
        items: [
        hotspotButtons,
        cameraButtons
        ],
        id: 'edit-model-menu'
    })

    $('#wikiPreview').after(modelMenu.$element)

    return [modelMenu, selectVC]
}

/**
 * Enable all the preview menu widgets (called by
 * model load event)
 */
enableMenu = function() {
    modelMenu.items.forEach(group => {
        group.items.forEach(el => el.setDisabled(false))
    });
}

/**
 * Add a selection option to a ButtonMenuSelectWidget
 * 
 * @param {ButtonMenuSelectWidget} menuWidget
 */
addMenuOption = function(menuWidget) {
    menuWidget.menu.addItems([new OO.ui.MenuOptionWidget({data: 'New option', label: 'New option'})])
}

/**
 * Disable general interaction with model
 * viewer for specific additional function
 * 
 * @param {string} fnClass class to add to model-viewer
 * @param {callback} viewCall callback function to add to model-viewer
 * @return {Element} model-viewer element
 */
disableViewer = function(fnClass, viewCall) {
    const previewMv = $('model-viewer')
    if (viewCall) previewMv.one('click', viewCall)
    if (fnClass) previewMv.addClass(fnClass)
    previewMv[0].disableTap = true
    previewMv[0].toggleAttribute('camera-controls', false)
    return previewMv[0]
}

/**
 * Enable general interaction with model
 * viewer
 * 
 * @return {Element} model-viewer element
 */
enableViewer = function() {
    const previewMv = $('model-viewer')
    previewMv.off('click', clickAddHotspot)
    previewMv.off('click', cancelDeleteHotspot)
    previewMv.removeClass('AddingHotspot DeletingHotspot')
    previewMv[0].disableTap = false
    previewMv[0].toggleAttribute('camera-controls', true)
    return previewMv[0]
}

/**
 * Use the model viewer methods to get image 
 * of current view and download
 * 
 * @param {string} defName wiki page name to use as base file name
 */
downloadImage = function(defName) {
    const imgName = defName.split('.')[0]
    const mView = $('model-viewer')[0]

    const dlA = document.createElement('a')
    dlA.setAttribute('download',imgName + '.png')

    const reader = new FileReader()
    reader.addEventListener("load", () => {
        dlA.setAttribute('href',reader.result)
        dlA.click()
    },{once: true})

    mView.toBlob(null, null, true)
        .then(imgBlob => {
            reader.readAsDataURL(imgBlob)
        })
}

//Initialize the menu and get required global objects
const [modelMenu, viewSelector] = buildPreviewMenu()