如何解决浏览器挂起问题-在具有7000个节点的大型角材料树上工作时
Preview of the Page which starts misbehaving in case of large data
右树的代码树具有从左到右的拖放功能(逻辑实现与在Angular材质树中实现的CDK拖放树相同)。 请仔细阅读《准则》,在此树中与性能相关的任何改进建议将不胜感激。
<div class="divright" [style.width]="!leftTreeFlag ? '96%' : '48%'">
<mat-tree [dataSource]="dataSourceRightTree" [treeControl]="treeControlRightTree" cdkDropList
(cdkDropListDropped)="dropRightTree($event)">
<mat-tree-node style="border:2px solid #dfdfdf" matTreeNodePadding
*matTreeNodeDef="let rightNode; when: hasNoContent">
<button mat-icon-button disabled></button>
<mat-form-field>
<input matInput #itemValue1 placeholder="New item...">
</mat-form-field>
<button mat-button (click)="saveRightNode(rightNode,itemValue1.value)">Save</button>
<i style="padding-top: 10px;text-align:right;float:right;font-size:20px;cursor:pointer;" width="100"
class="material-icons" (click)="deleteNodeFromRightTree(rightNode)">remove_circle_outline</i>
</mat-tree-node>
<mat-tree-node style="border:2px solid #dfdfdf" *matTreeNodeDef="let rightNode; when : isActiveAndNoChild"
matTreeNodePadding cdkDrag [cdkDragData]="rightNode" (mouseenter)="dragRightTreeHover(rightNode)"
(mouseleave)="rightDragHoverEnd()" (cdkDragStarted)="rightDragStart(rightNode)"
(cdkDragReleased)="rightDragEnd()">
<button mat-icon-button disabled> </button>
<!-- <button mat-icon-button matTreeNodeToggle
[attr.aria-label]="'toggle ' + rightNode.filename">
<mat-icon class="mat-icon-rtl-mirror">
{{treeControlRightTree.isExpanded(rightNode) ? 'expand_more' : 'chevron_right'}}
</mat-icon>
</button> -->
{{rightNode.rackName}}
<span>
<i *ngIf="rightNode.level !== 0 && rightNode.permission != 0" style=" padding-top:
10px;text-align:right;float:right;font-size:20px;cursor:pointer;" width="100"
class="material-icons" (click)="deleteNodeFromRightTree(rightNode)">remove_circle_outline</i>
<i *ngIf="rightNode.permission != 0"
style="padding-top: 10px;text-align: right;font-size:20px;float:right;cursor:pointer;"
class="material-icons" (click)="addNewRightItem(rightNode)"> add</i>
<i style="padding-top: 10px;text-align: right;float:right;font-size:20px;cursor:pointer;"
*ngIf="rightNode.level !== 0 && rightNode.permission != 0" class=" material-icons"
(click)="openSettingDialogue(rightNode)">settings</i>
</span>
<div style="padding: 3px; width: 20%;" [style.background-color]="rightNode.color"> </div>
<!-- <button style="text-align:right;float:right;font-size:20px" mat-icon-button
(click)="addNewRightItem(rightNode)">
<mat-icon>add</mat-icon>
</button> -->
</mat-tree-node>
<mat-tree-node style="border:2px solid #dfdfdf" *matTreeNodeDef="let rightNode" matTreeNodePadding>
</mat-tree-node>
<mat-tree-node style="border:2px solid #dfdfdf" *matTreeNodeDef="let rightNode; when: isActiveAndHasChild "
matTreeNodePadding cdkDrag [cdkDragData]="rightNode" (mouseenter)="dragRightTreeHover(rightNode)"
(mouseleave)="rightDragHoverEnd()" (cdkDragStarted)="rightDragStart(rightNode)"
(cdkDragReleased)="rightDragEnd()">
<button mat-icon-button matTreeNodeToggle [attr.aria-label]="'toggle ' + rightNode.filename">
<mat-icon class="mat-icon-rtl-mirror">
{{treeControlRightTree.isExpanded(rightNode) ? 'expand_more' : 'chevron_right'}}
</mat-icon>
</button>
{{rightNode.rackName}}
<span>
<i *ngIf="rightNode.level !== 0 && rightNode.permission != 0" style=" padding-top:
10px;text-align:right;float:right;font-size:20px;cursor:pointer;" width="100"
class="material-icons" (click)="deleteNodeFromRightTree(rightNode)">remove_circle_outline</i>
<i *ngIf="rightNode.permission != 0"
style="padding-top: 10px;text-align: right;float:right;font-size:20px;cursor:pointer;"
class="material-icons" (click)="addNewRightItem(rightNode)"> add</i>
<i style="padding-top: 10px;text-align: right;font-size:20px;float:right;cursor:pointer;"
*ngIf="rightNode.level !== 0 && rightNode.permission != 0" class="material-icons"
(click)="openSettingDialogue(rightNode)">settings</i>
<i style="padding-top: 10px;float:right;font-size:20px;cursor:pointer;" *ngIf="rightNode.level === 0"
class="material-icons" (click)="openDialog()">settings</i>
</span>
<div style="padding: 3px; width: 20%;" [style.background-color]="rightNode.color"> </div>
<!-- <button style="text-align:right;float:right;font-size:20px" mat-icon-button
(click)="addNewRightItem(rightNode)">
<mat-icon>add</mat-icon>
</button> -->
</mat-tree-node>
</mat-tree>
</div>
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