GridEditor.vue 35.5 KB
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<template lang="pug">

  div.cell-grid-container
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    q-window-resize-observable(@resize="updateGridDimensions")
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    // ------------------------------------------------------------------------------------------ cached new cell helper
    // q-page-sticky.z-top(v-touch-pan="moveCachedCell", v-if="cachedNewCell", position="top-right")
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    //
      .fixed-top-right.z-top(v-touch-pan="moveCachedCell", v-if="cachedNewCell",
      // :style="{top: touch.position.top - 16 - 16 + 'px'}")
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    // .fixed-top.z-top(v-touch-pan="moveCachedCell", v-if="cachedNewCell")
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    #cell-helper.fixed-top.z-top.bg-dark.text-white.transition(:class="{'show': cachedNewCell}")
      q-item.q-px-md.q-py-none.full-height
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        q-item-main
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          | Touch anywhere to place the new cell.
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        q-item-side
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          q-btn.bg-transparent.text-white.on-right(@click.native="$store.commit('mosys/cacheNewCell', undefined)", round, flat)
            q-icon(name="clear")
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    // ------------------------------------------------------------------------------------------------------------ grid
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      @click="event => {addMobileCell(event)}",
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    div.cell-grid(
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    v-touch-pan="panGrid",
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    @dragenter="handleGridDragOver",
    @dragover="handleGridDragOver",
    @dragleave="handleGridDragEnd",
    @drop="handleGridDrop",
    @contextmenu="handleGridContextMenu",
    :style="gridStyle")
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      // context menu grid (desktop only)
      q-context-menu.desktop-only(ref="gridmenu")
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        q-list(link, separator, no-border, style="min-width: 150px; max-height: 300px;")
          q-item(
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          v-for="action in gridContextMenuActions",
          :key="action.label",
          v-close-overlay,
          @click.native="event => {action.handler(event)}")
            q-item-main(:label="action.label")
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      template(v-if="!resizingGrid")

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        template(v-for="(annotation, index) in annotations")
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          //----- cell
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          .cell-item(
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          v-if="!annotationUIStates[annotation._uuid] || !annotationUIStates[annotation._uuid].beingDragged",
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          v-touch-hold="event => {cellHold(event, annotation)}",
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          draggable="true",
          @click.prevent="event => {handleCellTouch(event, annotation)}",
          @dragstart="event => {handleCellDragStart(event, annotation)}",
          @dragend="event => {handleCellDragEnd(event, annotation)}",
          @contextmenu="handleCellContextMenu",
          :style="getAnnotationStyle(annotation)",
          :class="getAnnotationClasses(annotation._uuid, 'cell-item')",
          :key="`cell-${index}`")

            //----- edit-/close-button
            // TODO: find a more elegant solution
            .desktop-only
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              q-btn.edit-button.absolute-top-right(
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              @click.prevent="event => {handleCellEditClick(event, annotation)}",
              :class="getAnnotationClasses(annotation._uuid, 'editing')",
              style="top: 8px; right: 8px;",
              :icon="annotationUIStates[annotation._uuid].editing ? 'close' : 'edit'", flat, round, size="md"
              )
            .mobile-only
              q-btn.edit-button.absolute.fit.bg-transparent(
              @click.prevent="event => {touchMobileCell(event, annotation)}", flat)

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            //----- selecting cells disabled because it has no use currently
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            // switch with cell component below to re-enable it
            //cell(
              @click.native.prevent="event => {handleCellClick(event, annotation)}", :annotation="annotation", :preview="true")
            cell(
            :annotation="annotation",
            :preview="true"
            )

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            //----- resize-handler (desktop only)
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            .desktop-only.cell-item-resize-handle(
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            draggable="true",
            @dragstart="event => {handleCellResizerDragStart(event, annotation)}",
            @dragend="event => {handleCellResizerDragEnd(event, annotation)}",
            @dragexit="event => {handleCellResizerDragEnd(event, annotation)}")
              q-icon(name="network cell")

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            //----- context menu for cells (desktop only)
            // TODO: needs revision
            q-context-menu.desktop-only
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              q-list(link, separator, no-border, style="min-width: 150px; max-height: 300px;")
                q-item(
                v-for="action in cellContextMenuActions",
                :key="action.label",
                v-close-overlay,
                @click.native="event => {action.handler(event, annotation)}")
                  q-item-main(:label="action.label")
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        //----- temporary cell when pulling a new cell into grid (desktop)
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        template(v-for="(tmpCell, index) in tmpObjects")
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          .cell-item.cell-item-tmp(:style="getAnnotationStyle(tmpCell)", :key="`cell-tmp-${index}`")
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            cell(:cell="tmpCell")

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        //----- temporary cell (mobile)
        .cell-item.cell-item-tmp-mobile(:style="mobileTempCellStyle(mobileTempCell)")
          // cell(:cell="tmpCell")

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      // ---------------------------------------------------------------------------------------------------------------
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      template(v-else)
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        .cell-item(:style="getAnnotationStyle({x:0,y:0,width:1,height:1})", key="cell-grid-resizer")
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          div.cell-item-resize-handle(
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          draggable="true",
          @dragstart="event => {handleGridResizerDragStart(event)}",
          @dragend="event => {handleGridResizerDragEnd(event)}",
          @dragexit="event => {handleGridResizerDragEnd(event)}")
            q-icon(name="network cell")
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      //template(v-if="!isMobile")
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        .fixed-top-right(style="right:18px; top:68px", v-if="!$store.state.mosys.showSources")
          q-btn(round, color="primary", small, @click="handleGridButtonClickEdit", style="margin-right: 0.5em")
            q-icon(name="add")
          q-btn(round, color="primary", small, @click="$router.push(`/mosys/grids/${$route.params.uuid}`)")
            q-icon(name="remove red eye")
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      //template(v-if="isMobile")
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        .fixed-top-right.q-mt-sm(v-if="!$store.state.mosys.showSources", style="z-index: 10000; padding-top: 3px;")
          q-btn.q-mr-sm(round, color="primary", size="sm", @click="handleGridButtonClickEdit")
            q-icon(name="add")
          q-btn.q-mr-md(round, color="primary", size="sm", @click="$router.push(`/mosys/grids/${$route.params.uuid}`)")
            q-icon(name="remove red eye")
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    // ------------------------------------------------------------------------------------------- buttons (mobile only)
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    q-page-sticky.z-top.q-mb-md.backdrop-filter.shadow-1.q-mx-md.overflow-hidden(v-if="showEditingCells", position="bottom-right")
      div.full-width

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        //----- "edit content"-buttons
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        div#edit-content-mobile(v-if="editMode === 'edit'")
          grid-editor-editing-cells-mobile

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        //----- "move"-buttons
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        div(v-if="editMode === 'move'", :class="{'q-pa-md' : editMode}")
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          .text-center
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            q-btn.text-dark(@click="mobileCellMove(mobileSelectedCell, 0, -1)", round, flat, size="md",
            style="border: 0px solid #333; background-color: rgba(0, 0, 0, .1);")
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              q-icon.rotate-90(name="keyboard_backspace")
          .text-center
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            q-btn.text-dark(@click="mobileCellMove(mobileSelectedCell, -1, 0)", round, flat, size="md",
            style="border: 0px solid #333; background-color: rgba(0, 0, 0, .1);")
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              q-icon(name="keyboard_backspace")
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            q-btn.invisible.text-dark(round, flat, size="md")
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              q-icon.flip-vertical(name="photo_size_select_small")
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            q-btn.text-dark(@click="mobileCellMove(mobileSelectedCell, 1, 0)", round, flat, size="md",
            style="border: 0px solid #333; background-color: rgba(0, 0, 0, .1);")
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              q-icon.rotate-180(name="keyboard_backspace")
          .text-center
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            q-btn.text-dark(@click="mobileCellMove(mobileSelectedCell, 0, 1)", round, flat, size="md",
            style="border: 0px solid #333; background-color: rgba(0, 0, 0, .1);")
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              q-icon.rotate-270(name="keyboard_backspace")

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        //----- "resize"-buttons
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        div(v-if="editMode === 'resize'", :class="{'q-pa-md' : editMode}")
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          .text-center
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            q-btn.bg-dark(@click="mobileCellResize(mobileSelectedCell, 0, -1)", round, flat, size="md")
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              q-icon(name="remove")
          .text-center
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            q-btn.bg-dark(@click="mobileCellResize(mobileSelectedCell, -1, 0)", round, flat, size="md")
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              q-icon(name="remove")
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            q-btn.invisible.text-dark(round, flat, size="md")
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              q-icon.rotate-45(name="zoom_out_map")
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            q-btn.bg-dark(@click="mobileCellResize(mobileSelectedCell, 1, 0)", round, flat, size="md")
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              q-icon(name="add")
          .text-center
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            q-btn.bg-dark(@click="mobileCellResize(mobileSelectedCell, 0, 1)", round, flat, size="md")
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              q-icon(name="add")

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        //----- "delete"-button
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        div(v-if="editMode === 'delete'", :class="{'q-pa-md' : editMode}")
          .text-center
            .text-dark
              | {{ $t('labels.delete_cell') }}
            .q-mt-md
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              q-btn.bg-dark.text-white.q-mx-sm(@click="event => {handleCellContextMenuDelete(event, mobileSelectedCell)}",
              flat, round, size="md")
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                q-icon(name="check")

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      div.row.text-center.text-dark.round-borders.full-width
        .col
          q-btn.full-width(@click="setEditMode('edit')", :class="{'bg-white text-dark' : editMode === 'edit'}", flat, no-ripple)
            q-icon(name="edit")
        .col
          q-btn.full-width(@click="setEditMode('resize')", :class="{'bg-white text-dark' : editMode === 'resize'}", flat, no-ripple)
            q-icon.flip-vertical(name="photo_size_select_small")
        .col
          q-btn.full-width(@click="setEditMode('move')", :class="{'bg-white text-dark' : editMode === 'move'}", flat, no-ripple)
            q-icon(name="open_with")
        .col
          q-btn.full-width(@click="setEditMode('delete')", :class="{'bg-white text-dark' : editMode === 'delete'}", flat, no-ripple)
            q-icon(name="delete")

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</template>

<script>
  import Cell from './Cell'
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  import { userHasFeature } from 'mbjs-quasar/src/lib'
  import { mapGetters } from 'vuex'
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  import GridEditorEditingCellsMobile from './/GridEditorEditingCellsMobile'
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  const nullImage = new Image()
  nullImage.src = 'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=='

  export default {
    components: {
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      Cell,
      GridEditorEditingCellsMobile
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    },
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    props: ['gridUuid', 'tabsAreOpen'],
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    data () {
      return {
        gridContextMenuActions: {
          insert_column_left: {
            label: 'Insert Column Left',
            handler: this.handleGridContextMenuInsertColumnLeft
          },
          delete_column: {
            label: 'Delete Column',
            handler: this.handleGridContextMenuDeleteColumn
          },
          insert_row_above: {
            label: 'Insert Row Above',
            handler: this.handleGridContextMenuInsertRowAbove
          },
          delete_row: {
            label: 'Delete Row',
            handler: this.handleGridContextMenuDeleteRow
          },
          edit_grid_dimensions: {
            label: 'Change Grid',
            handler: () => { this.resizingGrid = !this.resizingGrid }
          }
        },
        grid: undefined,
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        annotations: undefined,
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        tmpObjects: [],
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        annotationUIStates: {},
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        gridDimensions: { gridWidth: 0, gridHeight: 0, cellWidth: 0, cellHeight: 0 },
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        contextMenuClickPosition: {},
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        resizingGrid: false,
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        mobileSelectedCell: undefined,
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        touch: {position: {top: undefined, left: undefined}},
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        isMobile: this.$q.platform.is.mobile,
        mobileTempCell: {x: 0, y: 0, width: 1, height: 1}
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      }
    },
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    computed: {
      ...mapGetters({
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        cachedNewCell: 'mosys/getNewCell',
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        user: 'auth/getUserState',
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        // isMobile: 'globalSettings/getIsMobile',
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        // editingCells: 'mosys/getEditingCells'
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        showEditingCells: 'mosys/getShowEditingCells',
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        scrollPositionCache: 'mosys/getScrollPositionCache',
        editMode: 'mosys/getEditMode'
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      }),
      cellContextMenuActions () {
        const actions = {
          delete: {
            label: 'Delete',
            handler: this.handleCellContextMenuDelete
          },
          insert_column_left: {
            label: 'Insert Column Left',
            handler: this.handleGridContextMenuInsertColumnLeft
          },
          insert_row_above: {
            label: 'Insert Row Above',
            handler: this.handleGridContextMenuInsertRowAbove
          }
        }
        if (userHasFeature(this.user, 'cssediting')) {
          actions.edit_css_classname = {
            label: 'Edit CSS class name',
            handler: this.handleCellContextMenuEditCSS
          }
        }
        return actions
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      },
      gridStyle () {
        if (!this.gridDimensions || !this.gridDimensions.full) return {}
        // TODO: fix mobile grid editor view
        const cell = this.gridDimensions.full.cell
        return {
          width: `${this.gridDimensions.full.width}px`,
          height: '100%',
          'grid-auto-columns': `${cell.width}px`,
          'grid-auto-rows': `${cell.height}px`,
          'background-image': `url("data:image/svg+xml;utf8,` +
            `<svg xmlns='http://www.w3.org/2000/svg' width='100%' height='100%'><defs>` +
            `<pattern id='smallGrid' width='${cell.width}' height='${cell.height}' patternUnits='userSpaceOnUse'>` +
            `<path d='M ${cell.width} 0 L 0 0 0 ${cell.height}' fill='none' stroke='gray' stroke-width='0.5'/>` +
            `</pattern></defs><rect width='100%' height='100%' fill='url(%23smallGrid)' /></svg>")`
        }
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      }
    },
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    async mounted () {
      await this.fetchData()
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      this.resetScrollPosition()
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    },
    watch: {
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      annotations () {
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        this.updateAnnotationUIStates()
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      },
      gridMetadata () {
        this.updateGridDimensions()
      },
      async gridUuid () {
        await this.fetchData()
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      },
      showEditingCells (val) {
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        // console.log('show editing cells', val)
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        if (val === false) {
          this.updateAnnotationUIStates()
        }
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      },
      tabsAreOpen () {
        this.resetScrollPosition()
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      }
    },
    methods: {
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      panGrid (obj) {
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        console.log('hhhhhhhhhhhhhhhhh', obj)
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        let res = this.getGridPositionForEvent(obj)
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        // console.log('**********', res)
        // this.mobileTempCell.x = res.x
        // this.mobileTempCell.y = res.y
        if (obj.isFirst) {
          this.mobileTempCell.x = res.x
          this.mobileTempCell.y = res.y
        }
        this.mobileTempCell.width = res.x - this.mobileTempCell.x + 1
        this.mobileTempCell.height = res.y - this.mobileTempCell.y + 1
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        if (obj.isFinal) {
          this.addMobileCell(obj)
        }
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      },
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      async cellHold (event, annotation) {
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        this.$store.commit('mosys/setEditingCells', '')

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        /*
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        this.$q.notify({
          message: 'Cell was cloned.',
          color: 'dark',
          textColor: 'white'
        })
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        */
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        const _cell = await this.$store.dispatch('cells/get', annotation.body.source.id)
        const resourceCell = {
          data: { content: '' },
          config: {},
          component: _cell.component
        }
        this.$store.commit('mosys/cacheNewCell', resourceCell)
      },
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      moveCachedCell (obj) {
        this.touch.position = {top: obj.position.top, left: obj.position.left}
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        /*
        if (obj.isFinal) {
          console.log(obj.isFinal)
          console.log(window.event)
          console.log(this.touch.position)
          console.log('--->->->', this.getGridPositionForEvent(event))
        }
        */
        // console.log('--->>>', this.getGridPositionForEvent(event))
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      },
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      addMobileCell (event) {
        // console.log('addMobileCell()', event, annotation)
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        if (this.cachedNewCell) {
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          this.handleGridDrop(event)
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          this.$store.commit('mosys/cacheNewCell', undefined)
        }
      },
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      touchMobileCell (event, cell) {
        Object.keys(this.annotationUIStates).filter((k) => {
          if (k === cell._uuid && this.annotationUIStates[k].editing) console.log(k, cell._uuid)
          else this.annotationUIStates[k].editing = false
        })
        this.annotationUIStates[cell._uuid].editing = !this.annotationUIStates[cell._uuid].editing
        this.updateEditingCells()
        this.$root.$emit('mosys_saveScrollPosition')
        // this.handleCellEditClick(event, annotation)
      },
      async mobileCellMove (annotation, _x, _y) {
        let
          parsed = annotation.target.selector.parse(),
          sliced = parsed.xywh.slice(0, 2),
          x = sliced[0],
          y = sliced[1]
        x += _x
        y += _y
        let target = this.grid.get2DArea([x, y], parsed.xywh.slice(2))
        annotation.target.selector.value = target.selector.value
        await this.$store.dispatch('annotations/patch', [annotation.id, {
          target: {
            selector: { value: target.selector.value }
          }
        }])
      },
      handleCellTouch (event, annotation) {
        console.log(event, annotation)
        this.mobileSelectedCell = annotation
      },
      async mobileCellResize (annotation, width, height) {
        let
          parsed = annotation.target.selector.parse(),
          [x, y, w, h] = parsed.xywh
        w += width
        h += height
        const value = { xywh: [x, y, w, h] }
        annotation.target.selector.value = value

        await this.$store.dispatch('annotations/patch', [annotation.id, { target: { selector: { value } } }])
      },
      setEditMode (mode) {
        this.$store.commit('mosys/setEditMode', mode)
      },
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      //
      // DATA
      //

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      async fetchData () {
        if (this.gridUuid) {
          this.grid = await this.$store.dispatch('maps/get', this.gridUuid)
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          if (!Object.keys(this.grid.config).length) {
            this.grid.config = {
              columns: 10,
              rows: 6,
              ratio: 16 / 9.0
            }
            await this.updateGridMetadataStore()
          }
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          this.updateGridDimensions()
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          const { items } = await this.$store.dispatch('annotations/find', {
            'target.id': this.grid.id,
            'body.purpose': 'linking',
            'body.type': 'Cell'
          })
          this.annotations = items
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        }
      },
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      async updateGridMetadataStore () {
        await this.$store.dispatch('maps/patch', [this.grid.id, { config: this.grid.config }])
        this.updateGridDimensions()
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      },
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      updateSelectedCells () {
        const _this = this
        let selectedCells = Object.keys(this.annotationUIStates).filter(k => {
          return _this.annotationUIStates[k].selected
        }).map(k => {
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          // return _this.cells.find(c => c._uuid === k)
          return _this.annotations.find(c => c._uuid === k)
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        })
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        console.log('wwww', selectedCells)
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        this.$store.commit('mosys/setSelectedCells', selectedCells)
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      },
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      updateEditingCells () {
        const _this = this
        let editingCells = Object.keys(this.annotationUIStates).filter(k => {
          return _this.annotationUIStates[k].editing
        }).map(k => {
          // return _this.cells.find(c => c._uuid === k)
          return _this.annotations.find(c => c._uuid === k)
        })
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        /*
        console.log('this.annotationUIStates: ', this.annotationUIStates)
        console.log('editingCells: ', editingCells)
        if (this.isMobile) {
          console.log('MOBILE')
        }
        */
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        this.$store.commit('mosys/setEditingCells', editingCells)
      },
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      updateAnnotationUIStates () {
        let newAnnotationUIStates = {}
        this.annotations.forEach(a => {
          newAnnotationUIStates[a._uuid] = {
            selected: false,
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            editing: false,
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            beingResized: false,
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            beginDragged: false,
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            annotation: a
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          }
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        })
        this.annotationUIStates = newAnnotationUIStates
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        this.updateSelectedCells()
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        this.updateEditingCells()
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      },
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      //
      // GRID DRAG & DROP HANDLERS
      //

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      async handleGridDragOver (event) {
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        let _this = this
        if (this.resizingGrid) {
          const position = this.getGridPositionForEvent(event)
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          this.grid.config.ratio = position.ox / (position.oy * 1.0)
          await this.updateGridMetadataStore()
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        }
        else {
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          let annotation = this.annotations.filter(annotation => {
            if (!_this.annotationUIStates[annotation._uuid]) return false
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            return _this.annotationUIStates[annotation._uuid].beingDragged ||
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              _this.annotationUIStates[annotation._uuid].beingResized
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          }).shift()
          let offset, position
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          if (!annotation) {
            annotation = {
              target: this.grid.get2DArea([1, 1], [1, 1])
            }
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            position = this.getGridPositionForEvent(event)
          }
          else {
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            offset = this.annotationUIStates[annotation._uuid].draggingOffset
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            position = this.getGridPositionForEvent(event, offset)
          }
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          if (!this.tmpObjects.length) this.tmpObjects.push(annotation)
          const parsed = annotation.target.selector.parse()
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          if (event.dataTransfer.types.includes('text/plain')) {
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            parsed.xywh[0] = position.x
            parsed.xywh[1] = position.y
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            event.preventDefault()
          }
          else {
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            parsed.xywh[2] = Math.max(1, 1 + position.x - parsed.xywh[0])
            parsed.xywh[3] = Math.max(1, 1 + position.y - parsed.xywh[1])
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          }
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          annotation.target.selector.value = parsed
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        }
      },
      handleGridDragEnd () {
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        this.tmpObjects = []
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      },
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      async handleGridDrop (event) {
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        let dropData
        if (event.dataTransfer) dropData = event.dataTransfer.getData('text/plain')
        if (!dropData) dropData = JSON.stringify(this.cachedNewCell)
        // console.log('handleGridDrop - event', event)
        // console.log('handleGridDrop - dropData', dropData)
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        if (dropData) {
          dropData = JSON.parse(dropData)
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          let annotation = this.annotations.find(a => a.id === dropData.id)
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          const { x, y } = this.getGridPositionForEvent(
            event,
            annotation ? this.annotationUIStates[annotation._uuid].draggingOffset : undefined
          )
          if (annotation) {
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            const
              parsed = annotation.target.selector.parse(),
              target = this.grid.get2DArea([x, y], parsed.xywh.slice(2))
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            annotation.target.selector.value = target.selector.value
            await this.$store.dispatch('annotations/patch', [annotation.id, {
              target: {
                selector: { value: target.selector.value }
              }
            }])
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          }
          else {
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            if (this.mobileTempCell.x) console.log('this.mobileTempCell', this.mobileTempCell)
            let test = this.grid.get2DArea([this.mobileTempCell.x, this.mobileTempCell.y], [this.mobileTempCell.width, this.mobileTempCell.height])
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            const
              { data, config, component } = dropData,
              cell = await this.$store.dispatch('cells/post', { data, config, component })
            annotation = await this.$store.dispatch('annotations/post', {
              body: {
                type: 'Cell',
                purpose: 'linking',
                source: {
                  id: cell.id
                }
              },
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              // target: this.grid.get2DArea([x, y], [1, 1])
              target: test
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            })
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            this.annotations.push(annotation)
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            this.updateAnnotationUIStates()
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          }
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          this.tmpObjects = []
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          event.preventDefault()
        }
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        this.mobileTempCell = {x: undefined, y: undefined, width: undefined, height: undefined}
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      },
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      //
      // CELL DRAG & DROP HANDLERS
      //
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      handleCellEditClick (event, cell) {
        this.annotationUIStates[cell._uuid].editing = !this.annotationUIStates[cell._uuid].editing
        this.updateEditingCells()
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        this.$root.$emit('mosys_saveScrollPosition')
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      },
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      handleCellClick (event, cell) {
        this.annotationUIStates[cell._uuid].selected = !this.annotationUIStates[cell._uuid].selected
        this.updateSelectedCells()
      },
      handleCellDragStart (event, annotation) {
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        console.log('§§§§§§§§', annotation)
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        if (!this.annotationUIStates[annotation._uuid].beingResized) {
          event.dataTransfer.setData('text/plain', JSON.stringify(annotation))
          event.dataTransfer.setDragImage(nullImage, 0, 0)
          let elContainerBoundingBox = this.$el.getBoundingClientRect()
          let elBoundingBox = event.target.getBoundingClientRect()
          let offset = {
            x: (event.clientX - elContainerBoundingBox.x) - (elBoundingBox.x - elContainerBoundingBox.x),
            y: (event.clientY - elContainerBoundingBox.y) - (elBoundingBox.y - elContainerBoundingBox.y)
          }
          this.annotationUIStates[annotation._uuid].draggingOffset = offset
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          this.annotationUIStates[annotation._uuid].beingDragged = true
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        }
        this.tmpObjects.push(annotation)
      },
      handleCellDragEnd (event, annotation) {
        this.annotationUIStates[annotation._uuid].beingDragged = false
      },
      async handleCellContextMenuDelete (event, annotation) {
        this.annotationUIStates[annotation._uuid].selected = false
        this.updateSelectedCells()
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        this.updateEditingCells()
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        await this.$store.dispatch('cells/delete', annotation.body.source.id)
        await this.$store.dispatch('annotations/delete', annotation.id)
        this.annotations = this.annotations.filter(a => a.id !== annotation.id)
      },

      //
      // GRID RESIZE HANDLERS

      handleGridResizerDragStart (event) {
        event.dataTransfer.setDragImage(nullImage, 0, 0)
      },
      async handleGridResizerDragEnd () {
        await this.updateGridMetadataStore()
      },

      //
      // CELL RESIZE HANDLERS
      //

      handleCellResizerDragStart (event, annotation) {
        event.dataTransfer.setDragImage(nullImage, 0, 0)
        this.annotationUIStates[annotation._uuid].beingResized = true
        this.tmpObjects.push(annotation)
      },
      async handleCellResizerDragEnd (event, annotation) {
        let position = this.getGridPositionForEvent(event)
        let
          parsed = annotation.target.selector.parse(),
          [x, y, w, h] = parsed.xywh
        w = Math.max(1, 1 + position.x - x)
        h = Math.max(1, 1 + position.y - y)
        const value = { xywh: [x, y, w, h] }
        annotation.target.selector.value = value
        this.annotationUIStates[annotation._uuid].beingResized = false
        this.tmpObjects = []
        await this.$store.dispatch('annotations/patch', [annotation.id, { target: { selector: { value } } }])
      },

      //
      // CELL CONTEXT MENU
      //

      handleCellContextMenu (event) {
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        this.contextMenuClickPosition = this.getGridPositionForEvent(event)
      },
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      async handleCellContextMenuEditCSS (event, annotation) {
        try {
          let styleClass = await this.$q.dialog({
            title: this.$t('forms.edit_css_class.title'),
            ok: this.$t('buttons.set_css_class'),
            cancel: this.$t('buttons.cancel'),
            prompt: {
              model: annotation.styleClass,
              type: 'text'
            }
          })
          if (styleClass) {
            if (!styleClass.length) styleClass = undefined
            else if (styleClass.indexOf('.') === 0) styleClass = styleClass.substr(1)
          }
          annotation.styleClass = styleClass
          this.$store.dispatch('annotations/patch', [annotation._uuid, { target: { styleClass: styleClass || null } }])
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        }
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        catch (e) { /* dialog canceled */ }
      },

      //
      // GRID CONTEXT MENU
      //

      handleGridContextMenu (event) {
        this.contextMenuClickPosition = this.getGridPositionForEvent(event)
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      },
      async handleGridContextMenuInsertColumnLeft () {
        let position = this.contextMenuClickPosition
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        for (let annotation of this.annotations) {
          const parsed = annotation.target.selector.parse()
          if (parsed.xywh[0] >= position.x) {
            parsed.xywh[0] += 1
            annotation.target.selector.value = parsed
            await this.$store.dispatch('annotations/patch', [annotation.id, {
              target: { selector: { value: parsed } }
            }])
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          }
        }
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        this.grid.config.columns += 1
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        await this.updateGridMetadataStore()
      },
      async handleGridContextMenuDeleteColumn () {
        let position = this.contextMenuClickPosition
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        for (let annotation of this.annotations) {
          const parsed = annotation.target.selector.parse()
          if (parsed.xywh[0] > position.x) {
            parsed.xywh[0] -= 1
            annotation.target.selector.value = parsed
            await this.$store.dispatch('annotations/patch', [annotation.id, {
              target: { selector: { value: parsed } }
            }])
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          }
        }
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        this.grid.config.columns -= 1
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        await this.updateGridMetadataStore()
      },
      async handleGridContextMenuInsertRowAbove () {
        let position = this.contextMenuClickPosition
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        for (let annotation of this.annotations) {
          const parsed = annotation.target.selector.parse()
          if (parsed.xywh[1] >= position.y) {
            parsed.xywh[1] += 1
            annotation.target.selector.value = parsed
            await this.$store.dispatch('annotations/patch', [annotation.id, {
              target: { selector: { value: parsed } }
            }])
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          }
        }
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        this.grid.config.rows += 1
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        await this.updateGridMetadataStore()
      },
      async handleGridContextMenuDeleteRow () {
        let position = this.contextMenuClickPosition
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        for (let annotation of this.annotations) {
          const parsed = annotation.target.selector.parse()
          if (parsed.xywh[1] > position.y) {
            parsed.xywh[1] -= 1
            annotation.target.selector.value = parsed
            await this.$store.dispatch('annotations/patch', [annotation.id, {
              target: { selector: { value: parsed } }
            }])
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          }
        }
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        this.grid.config.rows -= 1
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        await this.updateGridMetadataStore()
      },
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      //
      // NAVIGATION
      //

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      handleGridButtonClickEdit () {
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        this.$store.commit('mosys/toggleSources')
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      },
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      //
      // GRID HELPERS
      //

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      getGridPositionForEvent (event, offset = { x: 0, y: 0 }) {
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        // console.log('###', event)
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        offset = { x: 0, y: 0 } // TODO: remove quick fix
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        let _clientX, _clientY

        if (event.clientX && event.clientY) {
          _clientX = event.clientX
          _clientY = event.clientY
        }
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        if (event.position) {
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          _clientX = event.position.left
          _clientY = event.position.top
        }

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        const elContainerBoundingBox = this.$el.getBoundingClientRect()
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        const ox = _clientX + this.$el.scrollLeft - elContainerBoundingBox.x - offset.x
        const oy = _clientY + this.$el.scrollTop - elContainerBoundingBox.y - offset.y
        // const ox = event.clientX + this.$el.scrollLeft - elContainerBoundingBox.x - offset.x
        // const oy = event.clientY + this.$el.scrollTop - elContainerBoundingBox.y - offset.y
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        const x = Math.ceil(ox / this.gridDimensions.full.cell.width)
        const y = Math.ceil(oy / this.gridDimensions.full.cell.height)
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        return { x: x, y: y, ox: ox, oy: oy }
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      },
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      updateGridDimensions (size) {
        if (!this.grid || !this.grid.config) return

        let elWidth = size ? size.width : this.$el.offsetWidth
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        // let elHeight = size ? size.height : this.$el.offsetHeight
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        let cellSizeRatio = this.grid.config.ratio
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        // let gridHeight = elHeight
        let gridHeight = this.$el.offsetHeight
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        let cellHeight = gridHeight / this.grid.config.rows
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        let cellWidth = elWidth / Math.round(elWidth / (cellHeight * cellSizeRatio))
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        let gridWidth = cellWidth * this.grid.config.columns
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        let cellsPerWidth = elWidth / cellWidth
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        let cellWidthMini = elWidth / this.grid.config.columns
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        let gridHeightMini = cellWidthMini / cellSizeRatio
        this.gridDimensions = {
          full: {
            width: gridWidth,
            height: gridHeight,
            cell: {
              width: cellWidth,
              height: cellHeight
            },
            cells_per_width: cellsPerWidth
          },
          mini: {
            width: elWidth,
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            height: gridHeightMini * this.grid.config.rows,
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            cell: {
              width: cellWidthMini,
              height: gridHeightMini
            }
          }
        }
      },
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      mobileTempCellStyle (obj) {
        console.log(obj)
        return {
          'grid-column-start': obj.x,
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          'grid-column-end': `span ${obj.width}`,
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          'grid-row-start': obj.y,
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          'grid-row-end': `span ${obj.height}`
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        }
      },
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      getAnnotationStyle (annotation) {
        const parsed = annotation.target.selector.parse()
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        return {
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          'grid-column-start': parsed.xywh[0],
          'grid-column-end': `span ${parsed.xywh[2]}`,
          'grid-row-start': parsed.xywh[1],
          'grid-row-end': `span ${parsed.xywh[3]}`
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        }
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      },
      getAnnotationClasses (uuid, which) {
        if (which === 'editing') {
          if (this.annotationUIStates[uuid].editing) {
            return 'bg-primary text-white'
          }
          else {
            return 'bg-grey'
          }
        }
        if (which === 'cell-item') {
          return {
            selected: this.annotationUIStates[uuid] ? this.annotationUIStates[uuid].selected : false,
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            editing: this.annotationUIStates[uuid] ? this.annotationUIStates[uuid].editing : false,
            hover: !this.isMobile
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          }
        }
        else return {}
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      },
      resetScrollPosition () {
        console.log('reset', this.scrollPositionCache, this.$el.scrollLeft)
        this.$el.scrollLeft = this.scrollPositionCache
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      }
    }
  }
</script>

<style scoped lang="stylus">
  .cell-grid
    display grid
    background-color #eee

  .cell-item
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    border-radius .75rem
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    backdrop-filter blur(3px)
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    &
      background-color rgba(0,0,0,0.2)
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      border 1px solid rgba(0, 0, 0, .2)
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      margin 1px
      box-sizing border-box
      position relative
      overflow: hidden
      grid-column-start: 1
      grid-column-end: span 1
      grid-row-start: 1
      grid-row-end: span 1

    &:hover
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      /*background-color lightblue*/
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      .edit-button
        display: block

    &.editing
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      /*background-color lightpink*/
      background rgba(255, 0, 0, .3)
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      .edit-button
        display: block

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    &.selected
      background-color lightpink

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    &.hover
      &:hover
        background-color lightblue

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    .edit-button
      display: none

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    .cell-item-inner
      width 100%
      height 100%

    .cell-item-resize-handle
      color rgba(0,0,0,0.2)
      position absolute
      right 0
      bottom 0
      width 18px
      height 20px

      &:hover
        color black

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  .backdrop-filter
    backdrop-filter blur(6px)
    background-color rgba(255, 255, 255, .3)
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    /*border-radius .5rem*/
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  #edit-content-mobile
    width calc(100vw - 32px)
    max-height calc(calc(100vh - 60px - 16px - 16px) / 2)
    overflow-y scroll
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  #cell-helper
    height 59px
    top -60px
    &.show
      top 0px
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  .cell-item-tmp-mobile
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    background-color rgba(0, 0, 255, .15)
    backdrop-filter blur(0px)
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</style>