@samotics/ngx-treeview
Version:
An Angular treeview component with checkbox
155 lines • 17.6 kB
JavaScript
import { isBoolean, isNil, isString } from 'lodash';
import { TreeviewHelper } from '../helpers/treeview-helper';
export class TreeviewItem {
constructor(item, autoCorrectChecked = false) {
this.internalDisabled = false;
this.internalChecked = true;
this.internalCollapsed = false;
if (isNil(item)) {
throw new Error('Item must be defined');
}
if (isString(item.text)) {
this.text = item.text;
}
else {
throw new Error('A text of item must be string object');
}
this.value = item.value;
if (isBoolean(item.checked)) {
this.checked = item.checked;
}
if (isBoolean(item.collapsed)) {
this.collapsed = item.collapsed;
}
if (isBoolean(item.disabled)) {
this.disabled = item.disabled;
}
if (!isNil(item.children) && item.children.length > 0) {
this.children = item.children.map(child => {
if (this.disabled === true) {
child.disabled = true;
}
return new TreeviewItem(child);
});
}
if (autoCorrectChecked) {
this.correctChecked();
}
}
get checked() {
return this.internalChecked;
}
set checked(value) {
if (!this.internalDisabled) {
if (this.internalChecked !== value) {
this.internalChecked = value;
}
}
}
get indeterminate() {
return this.checked === undefined;
}
setCheckedRecursive(value) {
if (!this.internalDisabled) {
this.internalChecked = value;
if (!isNil(this.internalChildren)) {
this.internalChildren.forEach(child => child.setCheckedRecursive(value));
}
}
}
get disabled() {
return this.internalDisabled;
}
set disabled(value) {
if (this.internalDisabled !== value) {
this.internalDisabled = value;
if (!isNil(this.internalChildren)) {
this.internalChildren.forEach(child => child.disabled = value);
}
}
}
get collapsed() {
return this.internalCollapsed;
}
set collapsed(value) {
if (this.internalCollapsed !== value) {
this.internalCollapsed = value;
}
}
setCollapsedRecursive(value) {
this.internalCollapsed = value;
if (!isNil(this.internalChildren)) {
this.internalChildren.forEach(child => child.setCollapsedRecursive(value));
}
}
get children() {
return this.internalChildren;
}
set children(value) {
if (this.internalChildren !== value) {
if (!isNil(value) && value.length === 0) {
throw new Error('Children must be not an empty array');
}
this.internalChildren = value;
if (!isNil(this.internalChildren)) {
let checked = null;
this.internalChildren.forEach(child => {
if (checked === null) {
checked = child.checked;
}
else {
if (child.checked !== checked) {
checked = undefined;
return;
}
}
});
this.internalChecked = checked;
}
}
}
getSelection() {
let checkedItems = [];
let uncheckedItems = [];
if (isNil(this.internalChildren)) {
if (this.internalChecked) {
checkedItems.push(this);
}
else {
uncheckedItems.push(this);
}
}
else {
const selection = TreeviewHelper.concatSelection(this.internalChildren, checkedItems, uncheckedItems);
checkedItems = selection.checked;
uncheckedItems = selection.unchecked;
}
return {
checkedItems,
uncheckedItems
};
}
correctChecked() {
this.internalChecked = this.getCorrectChecked();
}
getCorrectChecked() {
let checked = null;
if (!isNil(this.internalChildren)) {
for (const child of this.internalChildren) {
child.internalChecked = child.getCorrectChecked();
if (checked === null) {
checked = child.internalChecked;
}
else if (checked !== child.internalChecked) {
checked = undefined;
break;
}
}
}
else {
checked = this.checked;
}
return checked;
}
}
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{ isBoolean, isNil, isString } from 'lodash';\nimport { TreeviewHelper } from '../helpers/treeview-helper';\n\nexport interface TreeviewSelection {\n  checkedItems: TreeviewItem[];\n  uncheckedItems: TreeviewItem[];\n}\n\nexport interface TreeItem {\n  text: string;\n  value: any;\n  disabled?: boolean;\n  checked?: boolean;\n  collapsed?: boolean;\n  children?: TreeItem[];\n}\n\nexport class TreeviewItem {\n  private internalDisabled = false;\n  private internalChecked = true;\n  private internalCollapsed = false;\n  private internalChildren: TreeviewItem[];\n  text: string;\n  value: any;\n\n  constructor(item: TreeItem, autoCorrectChecked = false) {\n    if (isNil(item)) {\n      throw new Error('Item must be defined');\n    }\n    if (isString(item.text)) {\n      this.text = item.text;\n    } else {\n      throw new Error('A text of item must be string object');\n    }\n    this.value = item.value;\n    if (isBoolean(item.checked)) {\n      this.checked = item.checked;\n    }\n    if (isBoolean(item.collapsed)) {\n      this.collapsed = item.collapsed;\n    }\n    if (isBoolean(item.disabled)) {\n      this.disabled = item.disabled;\n    }\n    if (!isNil(item.children) && item.children.length > 0) {\n      this.children = item.children.map(child => {\n        if (this.disabled === true) {\n          child.disabled = true;\n        }\n\n        return new TreeviewItem(child);\n      });\n    }\n\n    if (autoCorrectChecked) {\n      this.correctChecked();\n    }\n  }\n\n  get checked(): boolean {\n    return this.internalChecked;\n  }\n\n  set checked(value: boolean) {\n    if (!this.internalDisabled) {\n      if (this.internalChecked !== value) {\n        this.internalChecked = value;\n      }\n    }\n  }\n\n  get indeterminate(): boolean {\n    return this.checked === undefined;\n  }\n\n  setCheckedRecursive(value: boolean): void {\n    if (!this.internalDisabled) {\n      this.internalChecked = value;\n      if (!isNil(this.internalChildren)) {\n        this.internalChildren.forEach(child => child.setCheckedRecursive(value));\n      }\n    }\n  }\n\n  get disabled(): boolean {\n    return this.internalDisabled;\n  }\n\n  set disabled(value: boolean) {\n    if (this.internalDisabled !== value) {\n      this.internalDisabled = value;\n      if (!isNil(this.internalChildren)) {\n        this.internalChildren.forEach(child => child.disabled = value);\n      }\n    }\n  }\n\n  get collapsed(): boolean {\n    return this.internalCollapsed;\n  }\n\n  set collapsed(value: boolean) {\n    if (this.internalCollapsed !== value) {\n      this.internalCollapsed = value;\n    }\n  }\n\n  setCollapsedRecursive(value: boolean): void {\n    this.internalCollapsed = value;\n    if (!isNil(this.internalChildren)) {\n      this.internalChildren.forEach(child => child.setCollapsedRecursive(value));\n    }\n  }\n\n  get children(): TreeviewItem[] {\n    return this.internalChildren;\n  }\n\n  set children(value: TreeviewItem[]) {\n    if (this.internalChildren !== value) {\n      if (!isNil(value) && value.length === 0) {\n        throw new Error('Children must be not an empty array');\n      }\n      this.internalChildren = value;\n      if (!isNil(this.internalChildren)) {\n        let checked = null;\n        this.internalChildren.forEach(child => {\n          if (checked === null) {\n            checked = child.checked;\n          } else {\n            if (child.checked !== checked) {\n              checked = undefined;\n              return;\n            }\n          }\n        });\n        this.internalChecked = checked;\n      }\n    }\n  }\n\n  getSelection(): TreeviewSelection {\n    let checkedItems: TreeviewItem[] = [];\n    let uncheckedItems: TreeviewItem[] = [];\n    if (isNil(this.internalChildren)) {\n      if (this.internalChecked) {\n        checkedItems.push(this);\n      } else {\n        uncheckedItems.push(this);\n      }\n    } else {\n      const selection = TreeviewHelper.concatSelection(this.internalChildren, checkedItems, uncheckedItems);\n      checkedItems = selection.checked;\n      uncheckedItems = selection.unchecked;\n    }\n\n    return {\n      checkedItems,\n      uncheckedItems\n    };\n  }\n\n  correctChecked(): void {\n    this.internalChecked = this.getCorrectChecked();\n  }\n\n  private getCorrectChecked(): boolean {\n    let checked: boolean = null;\n    if (!isNil(this.internalChildren)) {\n      for (const child of this.internalChildren) {\n        child.internalChecked = child.getCorrectChecked();\n        if (checked === null) {\n          checked = child.internalChecked;\n        } else if (checked !== child.internalChecked) {\n          checked = undefined;\n          break;\n        }\n      }\n    } else {\n      checked = this.checked;\n    }\n\n    return checked;\n  }\n}\n"]}