ng2-tree
Version:
angular2 component for visualizing data that can be naturally represented as a tree
127 lines • 14.7 kB
JavaScript
import { NodeMenuItemAction } from './menu/menu.events';
import { MouseButtons } from './utils/event.utils';
import { get } from './utils/fn.utils';
export class TreeController {
component;
tree;
treeService;
constructor(component) {
this.component = component;
this.tree = this.component.tree;
this.treeService = this.component.treeService;
}
select() {
if (!this.isSelected()) {
this.component.onNodeSelected({ button: MouseButtons.Left });
}
}
unselect() {
if (this.isSelected()) {
this.component.onNodeUnselected({ button: MouseButtons.Left });
}
}
isSelected() {
return this.component.isSelected;
}
expand() {
if (this.isCollapsed()) {
this.component.onSwitchFoldingType();
}
}
expandToParent(tree = this.tree) {
if (tree) {
const controller = this.treeService.getController(tree.id);
if (controller) {
requestAnimationFrame(() => {
controller.expand();
this.expandToParent(tree.parent);
});
}
}
}
isExpanded() {
return this.tree.isNodeExpanded();
}
collapse() {
if (this.isExpanded()) {
this.component.onSwitchFoldingType();
}
}
isCollapsed() {
return this.tree.isNodeCollapsed();
}
toTreeModel() {
return this.tree.toTreeModel();
}
rename(newValue) {
this.tree.markAsBeingRenamed();
this.component.applyNewValue({ type: 'keyup', value: newValue });
}
remove() {
this.component.onMenuItemSelected({ nodeMenuItemAction: NodeMenuItemAction.Remove });
}
addChild(newNode) {
if (this.tree.hasDeferredChildren() && !this.tree.childrenWereLoaded()) {
return;
}
const newTree = this.tree.createNode(Array.isArray(newNode.children), newNode);
this.treeService.fireNodeCreated(newTree);
}
addChildAsync(newNode) {
if (this.tree.hasDeferredChildren() && !this.tree.childrenWereLoaded()) {
return Promise.reject(new Error('This node loads its children asynchronously, hence child cannot be added this way'));
}
const newTree = this.tree.createNode(Array.isArray(newNode.children), newNode);
this.treeService.fireNodeCreated(newTree);
// This will give TreeInternalComponent to set up a controller for the node
return new Promise(resolve => {
setTimeout(() => {
resolve(newTree);
});
});
}
changeNodeId(id) {
if (!id) {
throw Error('You should supply an id!');
}
if (this.treeService.hasController(id)) {
throw Error(`Controller already exists for the given id: ${id}`);
}
this.treeService.deleteController(this.tree.id);
this.tree.id = id;
this.treeService.setController(this.tree.id, this);
}
reloadChildren() {
this.tree.reloadChildren();
}
setChildren(children) {
if (!this.tree.isLeaf()) {
this.tree.setChildren(children);
}
}
startRenaming() {
this.tree.markAsBeingRenamed();
}
check() {
this.component.onNodeChecked();
}
uncheck() {
this.component.onNodeUnchecked();
}
isChecked() {
return this.tree.checked;
}
isIndetermined() {
return get(this.component, 'checkboxElementRef.nativeElement.indeterminate');
}
allowSelection() {
this.tree.selectionAllowed = true;
}
forbidSelection() {
this.tree.selectionAllowed = false;
}
isSelectionAllowed() {
return this.tree.selectionAllowed;
}
}
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{ TreeService } from './tree.service';\nimport { Tree } from './tree';\nimport { TreeModel } from './tree.types';\nimport { NodeMenuItemAction } from './menu/menu.events';\nimport { TreeInternalComponent } from './tree-internal.component';\nimport { MouseButtons } from './utils/event.utils';\nimport { get } from './utils/fn.utils';\n\nexport class TreeController {\n  private tree: Tree;\n  private treeService: TreeService;\n\n  constructor(private component: TreeInternalComponent) {\n    this.tree = this.component.tree;\n    this.treeService = this.component.treeService;\n  }\n\n  public select(): void {\n    if (!this.isSelected()) {\n      this.component.onNodeSelected({ button: MouseButtons.Left });\n    }\n  }\n\n  public unselect(): void {\n    if (this.isSelected()) {\n      this.component.onNodeUnselected({ button: MouseButtons.Left });\n    }\n  }\n\n  public isSelected(): boolean {\n    return this.component.isSelected;\n  }\n\n  public expand(): void {\n    if (this.isCollapsed()) {\n      this.component.onSwitchFoldingType();\n    }\n  }\n\n  public expandToParent(tree: any = this.tree): void {\n    if (tree) {\n      const controller = this.treeService.getController(tree.id);\n      if (controller) {\n        requestAnimationFrame(() => {\n          controller.expand();\n          this.expandToParent(tree.parent);\n        });\n      }\n    }\n  }\n\n  public isExpanded(): boolean {\n    return this.tree.isNodeExpanded();\n  }\n\n  public collapse(): void {\n    if (this.isExpanded()) {\n      this.component.onSwitchFoldingType();\n    }\n  }\n\n  public isCollapsed(): boolean {\n    return this.tree.isNodeCollapsed();\n  }\n\n  public toTreeModel(): TreeModel {\n    return this.tree.toTreeModel();\n  }\n\n  public rename(newValue: string): void {\n    this.tree.markAsBeingRenamed();\n    this.component.applyNewValue({ type: 'keyup', value: newValue });\n  }\n\n  public remove(): void {\n    this.component.onMenuItemSelected({ nodeMenuItemAction: NodeMenuItemAction.Remove });\n  }\n\n  public addChild(newNode: TreeModel): void {\n    if (this.tree.hasDeferredChildren() && !this.tree.childrenWereLoaded()) {\n      return;\n    }\n\n    const newTree = this.tree.createNode(Array.isArray(newNode.children), newNode);\n    this.treeService.fireNodeCreated(newTree);\n  }\n\n  public addChildAsync(newNode: TreeModel): Promise<Tree> {\n    if (this.tree.hasDeferredChildren() && !this.tree.childrenWereLoaded()) {\n      return Promise.reject(\n        new Error('This node loads its children asynchronously, hence child cannot be added this way')\n      );\n    }\n\n    const newTree = this.tree.createNode(Array.isArray(newNode.children), newNode);\n    this.treeService.fireNodeCreated(newTree);\n\n    // This will give TreeInternalComponent to set up a controller for the node\n    return new Promise(resolve => {\n      setTimeout(() => {\n        resolve(newTree);\n      });\n    });\n  }\n\n  public changeNodeId(id: string | number) {\n    if (!id) {\n      throw Error('You should supply an id!');\n    }\n\n    if (this.treeService.hasController(id)) {\n      throw Error(`Controller already exists for the given id: ${id}`);\n    }\n\n    this.treeService.deleteController(this.tree.id);\n    this.tree.id = id;\n    this.treeService.setController(this.tree.id, this);\n  }\n\n  public reloadChildren(): void {\n    this.tree.reloadChildren();\n  }\n\n  public setChildren(children: TreeModel[]): void {\n    if (!this.tree.isLeaf()) {\n      this.tree.setChildren(children);\n    }\n  }\n\n  public startRenaming(): void {\n    this.tree.markAsBeingRenamed();\n  }\n\n  public check(): void {\n    this.component.onNodeChecked();\n  }\n\n  public uncheck(): void {\n    this.component.onNodeUnchecked();\n  }\n\n  public isChecked(): boolean {\n    return this.tree.checked;\n  }\n\n  public isIndetermined(): boolean {\n    return get(this.component, 'checkboxElementRef.nativeElement.indeterminate');\n  }\n\n  public allowSelection() {\n    this.tree.selectionAllowed = true;\n  }\n\n  public forbidSelection() {\n    this.tree.selectionAllowed = false;\n  }\n\n  public isSelectionAllowed(): boolean {\n    return this.tree.selectionAllowed;\n  }\n}\n"]}