Use filters store to display a filled in filter

src/components/datatable/ColumnFilter.vue

@@ -9,7 +9,7 @@
         <button v-if="showMenuButton && display === 'row'" :class="{'p-hidden-space': !hasRowFilter()}" type="button" class="p-column-filter-clear-button p-link" @click="clearFilter()"><span class="pi pi-filter-slash"></span></button>
         <transition name="p-connected-overlay" @enter="onOverlayEnter" @leave="onOverlayLeave">
             <div :ref="overlayRef" :class="overlayClass" v-if="overlayVisible" @keydown.escape="onEscape" @click="onContentClick" :style="filterMenuStyle">
-                <component :is="filterHeader" :field="field" />
+                <component :is="filterHeader" :field="field" :filterModel="filters[field]" :filterCallback="filterCallback" />
                 <template v-if="display === 'row'">
                     <ul class="p-column-filter-row-items">
                         <li class="p-column-filter-row-item" v-for="(matchMode,i) of matchModes" :key="matchMode.label" 
@@ -41,7 +41,7 @@
                         <CFButton type="button" class="p-button-sm" @click="applyFilter()" :label="applyButtonLabel" v-if="showApplyButton"></CFButton>
                     </div>
                 </template>
-                <component :is="filterFooter" :field="field" />
+                <component :is="filterFooter" :field="field" :filterModel="filters[field]" :filterCallback="filterCallback" />
             </div>
         </transition>
     </div>
@@ -111,6 +111,10 @@ export default {
             type: Object,
             default: null
         },
+        filtersStore: {
+            type: Object,
+            default: null
+        },
         filterMenuClass: {
             type: String,
             default: null
@@ -168,13 +172,15 @@ export default {
             this.hide();
         },
         hasFilter() {
-            let fieldFilter = this.filters[this.field];
+            if (this.filtersStore) {
+                let fieldFilter = this.filtersStore[this.field];
                 if (fieldFilter) {
                     if (fieldFilter.operator)
                         return !this.isFilterBlank(fieldFilter.constraints[0].value); 
                     else
                         return !this.isFilterBlank(fieldFilter.value);
                 }
+            }
 
             return false;
         },

src/components/datatable/DataTable.vue

@@ -20,7 +20,7 @@
             <table ref="table" role="grid">
                 <DTTableHeader :columnGroup="headerColumnGroup" :columns="columns" :rowGroupMode="rowGroupMode"
                         :groupRowsBy="groupRowsBy" :resizableColumns="resizableColumns" :allRowsSelected="allRowsSelected" :empty="empty"
-                        :sortMode="sortMode" :sortField="d_sortField" :sortOrder="d_sortOrder" :multiSortMeta="d_multiSortMeta" :filters="d_filters" :filterDisplay="filterDisplay"
+                        :sortMode="sortMode" :sortField="d_sortField" :sortOrder="d_sortOrder" :multiSortMeta="d_multiSortMeta" :filters="d_filters" :filtersStore="filters" :filterDisplay="filterDisplay"
                         @column-click="onColumnHeaderClick($event)" @column-mousedown="onColumnHeaderMouseDown($event)" @filter-change="onFilterChange" @filter-apply="onFilterApply"
                         @column-dragstart="onColumnHeaderDragStart($event)" @column-dragover="onColumnHeaderDragOver($event)" @column-dragleave="onColumnHeaderDragLeave($event)" @column-drop="onColumnHeaderDrop($event)"
                         @column-resizestart="onColumnResizeStart($event)" @checkbox-change="toggleRowsWithCheckbox($event)" />

src/components/datatable/TableHeader.vue

@@ -17,7 +17,7 @@
                             <DTHeaderCheckbox :checked="allRowsSelected" @change="onHeaderCheckboxChange($event)" :disabled="empty" v-if="columnProp(col, 'selectionMode') ==='multiple' && filterDisplay !== 'row'" />
                             <DTColumnFilter v-if="filterDisplay === 'menu' && col.children && col.children.filter" :field="columnProp(col, 'filterField')||columnProp(col, 'field')" :type="columnProp(col, 'dataType')" display="menu"  
                             :showMenu="columnProp(col, 'showFilterMenu')" :filterElement="col.children && col.children.filter" :filterHeader="col.children && col.children.filterHeader" :filterFooter="col.children && col.children.filterFooter" 
-                            :filters="filters" @filter-change="$emit('filter-change', $event)" @filter-apply="$emit('filter-apply')" :filterMenuStyle="columnProp(col, 'filterMenuStyle')" :filterMenuClass="columnProp(col, 'filterMenuClass')"
+                            :filters="filters" :filtersStore="filtersStore" @filter-change="$emit('filter-change', $event)" @filter-apply="$emit('filter-apply')" :filterMenuStyle="columnProp(col, 'filterMenuStyle')" :filterMenuClass="columnProp(col, 'filterMenuClass')"
                             :showOperator="columnProp(col, 'showFilterOperator')" :showClearButton="columnProp(col, 'showClearButton')" :showApplyButton="columnProp(col, 'showApplyButton')"
                             :showMatchModes="columnProp(col, 'showFilterMatchModes')" :showAddButton="columnProp(col, 'showAddButton')" :matchModeOptions="columnProp(col, 'filterMatchModeOptions')" :maxConstraints="columnProp(col, 'maxConstraints')" />
                         </div>
@@ -30,7 +30,7 @@
                         :class="getFilterColumnHeaderClass(col)" :style="columnProp(col, 'filterHeaderStyle')">
                         <DTColumnFilter v-if="col.children && col.children.filter" :field="columnProp(col, 'filterField')||columnProp(col, 'field')" :type="columnProp(col, 'dataType')" display="row"  
                         :showMenu="columnProp(col, 'showFilterMenu')" :filterElement="col.children && col.children.filter" :filterHeader="col.children && col.children.filterHeader" :filterFooter="col.children && col.children.filterFooter" 
-                        :filters="filters" @filter-change="$emit('filter-change', $event)" @filter-apply="$emit('filter-apply')" :filterMenuStyle="columnProp(col, 'filterMenuStyle')" :filterMenuClass="columnProp(col, 'filterMenuClass')"
+                        :filters="filters" :filtersStore="filtersStore" @filter-change="$emit('filter-change', $event)" @filter-apply="$emit('filter-apply')" :filterMenuStyle="columnProp(col, 'filterMenuStyle')" :filterMenuClass="columnProp(col, 'filterMenuClass')"
                         :showOperator="columnProp(col, 'showFilterOperator')" :showClearButton="columnProp(col, 'showClearButton')" :showApplyButton="columnProp(col, 'showApplyButton')"
                         :showMatchModes="columnProp(col, 'showFilterMatchModes')" :showAddButton="columnProp(col, 'showAddButton')" :matchModeOptions="columnProp(col, 'filterMatchModeOptions')" :maxConstraints="columnProp(col, 'maxConstraints')" />
                         <DTHeaderCheckbox :checked="allRowsSelected" @change="onHeaderCheckboxChange($event)" :disabled="empty" v-if="columnProp(col, 'selectionMode')==='multiple'" />
@@ -112,6 +112,10 @@ export default {
             type: Object,
             default: null
         },
+        filtersStore: {
+            type: Object,
+            default: null
+        },
         filterDisplay: {
             type: String,
             default: null