devextreme
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HTML5 JavaScript Component Suite for Responsive Web Development
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JavaScript
/**
* DevExtreme (esm/ui/file_manager/ui.file_manager.item_list.thumbnails.js)
* Version: 24.2.6
* Build date: Mon Mar 17 2025
*
* Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import $ from "../../core/renderer";
import {
extend
} from "../../core/utils/extend";
import {
isDefined
} from "../../core/utils/type";
import {
Deferred
} from "../../core/utils/deferred";
import eventsEngine from "../../common/core/events/core/events_engine";
import {
addNamespace
} from "../../common/core/events/utils/index";
import {
name as contextMenuEventName
} from "../../common/core/events/contextmenu";
import {
getDisplayFileSize
} from "./ui.file_manager.common";
import messageLocalization from "../../common/core/localization/message";
import FileManagerThumbnailListBox from "./ui.file_manager.items_list.thumbnails.list_box";
import FileManagerItemListBase from "./ui.file_manager.item_list";
import {
OPERATIONS
} from "./file_items_controller";
const FILE_MANAGER_THUMBNAILS_ITEM_LIST_CLASS = "dx-filemanager-thumbnails";
const FILE_MANAGER_THUMBNAILS_ITEM_CLASS = "dx-filemanager-thumbnails-item";
const FILE_MANAGER_THUMBNAILS_ITEM_THUMBNAIL_CLASS = "dx-filemanager-thumbnails-item-thumbnail";
const FILE_MANAGER_THUMBNAILS_EVENT_NAMESPACE = "dxFileManager_thumbnails";
class FileManagerThumbnailsItemList extends FileManagerItemListBase {
_initMarkup() {
super._initMarkup();
this.$element().addClass("dx-filemanager-thumbnails");
const contextMenuEvent = addNamespace(contextMenuEventName, "dxFileManager_thumbnails");
eventsEngine.on(this.$element(), contextMenuEvent, this._onContextMenu.bind(this));
this._createItemList()
}
_createItemList() {
const selectionMode = this._isMultipleSelectionMode() ? "multiple" : "single";
const $itemListContainer = $("<div>").appendTo(this.$element());
this._itemList = this._createComponent($itemListContainer, FileManagerThumbnailListBox, {
dataSource: this._createDataSource(),
selectionMode: selectionMode,
selectedItemKeys: this.option("selectedItemKeys"),
focusedItemKey: this.option("focusedItemKey"),
activeStateEnabled: true,
hoverStateEnabled: true,
loopItemFocus: false,
focusStateEnabled: true,
onItemEnterKeyPressed: this._tryOpen.bind(this),
itemThumbnailTemplate: this._getItemThumbnailContainer.bind(this),
getTooltipText: this._getTooltipText.bind(this),
onSelectionChanged: this._onItemListSelectionChanged.bind(this),
onFocusedItemChanged: this._onItemListFocusedItemChanged.bind(this),
onContentReady: this._onContentReady.bind(this)
})
}
_onContextMenu(e) {
e.preventDefault();
e.stopPropagation();
if (!this._isDesktop()) {
return
}
let items = null;
const targetItemElement = $(e.target).closest(this._getItemSelector());
let targetItem = null;
if (targetItemElement.length > 0) {
targetItem = this._itemList.getItemByItemElement(targetItemElement);
this._itemList.selectItem(targetItem);
items = this._getFileItemsForContextMenu(targetItem)
}
const target = {
itemData: targetItem,
itemElement: targetItemElement.length ? targetItemElement : void 0
};
this._showContextMenu(items, e.target, e, target)
}
_getItemThumbnailCssClass() {
return "dx-filemanager-thumbnails-item-thumbnail"
}
_getItemSelector() {
return ".dx-filemanager-thumbnails-item"
}
_getTooltipText(fileItemInfo) {
const item = fileItemInfo.fileItem;
if (item.tooltipText) {
return item.tooltipText
}
let text = `${item.name}\r\n`;
if (!item.isDirectory) {
text += `${messageLocalization.format("dxFileManager-listThumbnailsTooltipTextSize")}: ${getDisplayFileSize(item.size)}\r\n`
}
text += `${messageLocalization.format("dxFileManager-listThumbnailsTooltipTextDateModified")}: ${item.dateModified}`;
return text
}
_onItemDblClick(e) {
const $item = $(e.currentTarget);
const item = this._itemList.getItemByItemElement($item);
this._tryOpen(item)
}
_tryOpen(item) {
if (item) {
this._raiseSelectedItemOpened(item)
}
}
_getItemsInternal() {
return super._getItemsInternal().then((items => {
const deferred = new Deferred;
setTimeout((() => deferred.resolve(items)));
return deferred.promise()
}))
}
_disableDragging() {
return false
}
_getDefaultOptions() {
return extend(super._getDefaultOptions(), {
focusStateEnabled: true
})
}
_onItemListSelectionChanged(_ref) {
let {
addedItemKeys: addedItemKeys,
removedItemKeys: removedItemKeys
} = _ref;
const selectedItemInfos = this.getSelectedItems();
const selectedItems = selectedItemInfos.map((itemInfo => itemInfo.fileItem));
const selectedItemKeys = selectedItems.map((item => item.key));
this._tryRaiseSelectionChanged({
selectedItemInfos: selectedItemInfos,
selectedItems: selectedItems,
selectedItemKeys: selectedItemKeys,
currentSelectedItemKeys: addedItemKeys,
currentDeselectedItemKeys: removedItemKeys
})
}
_onItemListFocusedItemChanged(_ref2) {
let {
item: item,
itemElement: itemElement
} = _ref2;
if (!this._isMultipleSelectionMode()) {
this._selectItemSingleSelection(item)
}
const fileSystemItem = (null === item || void 0 === item ? void 0 : item.fileItem) || null;
this._onFocusedItemChanged({
item: fileSystemItem,
itemKey: null === fileSystemItem || void 0 === fileSystemItem ? void 0 : fileSystemItem.key,
itemElement: itemElement || void 0
})
}
_getScrollable() {
return this._itemList.getScrollable()
}
_setSelectedItemKeys(itemKeys) {
this._itemList.option("selectedItemKeys", itemKeys)
}
_setFocusedItemKey(itemKey) {
this._itemList.option("focusedItemKey", itemKey)
}
refresh(options, operation) {
const actualOptions = {
dataSource: this._createDataSource()
};
if (options && Object.prototype.hasOwnProperty.call(options, "focusedItemKey")) {
actualOptions.focusedItemKey = options.focusedItemKey
}
if (options && Object.prototype.hasOwnProperty.call(options, "selectedItemKeys")) {
actualOptions.selectedItemKeys = options.selectedItemKeys
}
if (!isDefined(actualOptions.focusedItemKey) && operation === OPERATIONS.NAVIGATION) {
this._needResetScrollPosition = true
}
this._itemList.option(actualOptions);
this._refreshDeferred = new Deferred;
return this._refreshDeferred.promise()
}
_deselectItem(item) {
const itemElement = this._itemList.getItemElementByItem(item);
this._itemList.unselectItem(itemElement)
}
_selectItemSingleSelection(item) {
if (item) {
this._itemList.selectItem(item)
} else {
this._itemList.clearSelection()
}
}
clearSelection() {
this._itemList.clearSelection()
}
getSelectedItems() {
return this._itemList.getSelectedItems()
}
}
export default FileManagerThumbnailsItemList;