svogv
Version:
A decorator based approach for model driven forms, including an advanced DataGrid and a TreeView component.
223 lines • 30.1 kB
JavaScript
import { Component, Input, Output, EventEmitter, ElementRef, Renderer2 } from '@angular/core';
import { TextTreeNodeModel, TreeNodeState } from '../models';
/**
* The TreeNodeModel class represents a single TreeNodeModel for the treeview. Actually, this renders the real UI.
*
* The component needs this input value:
*
* * @Input() node: AcTextTreeNode;
*
* The several options are set through the AcTreeNodeOptions object that is being held by the
* AcTextTreeNode class. This includes colors, icons, and other styles.
*
* The component can fire these events:
*
* * @Output() nodeClick: EventEmitter<AcTreeNode>;
* * @Output() checkChanged: EventEmitter<AcTreeNode>;
* * @Output() selectedChanged: EventEmitter<AcTreeNode>;
* * @Output() collapseChanged: EventEmitter<AcTreeNode>;
*
*/
export class TreeViewNodeComponent {
constructor(el, renderer) {
this.el = el;
this.renderer = renderer;
this.isExpanded = false;
this.nodeClick = new EventEmitter();
this.checkChanged = new EventEmitter();
this.selectedChanged = new EventEmitter();
this.collapseChanged = new EventEmitter();
}
ngOnInit() {
// set HTML according to options
this.collapseClasses = new Array();
this.iconClasses = new Array();
// expander area with icon
if (this.node) {
// expect a font-awesome class with or without fa class
if (this.node.options && this.node.options.icon) {
if (this.node.options.icon.indexOf(`${TreeViewNodeComponent.pfxIcon} `) !== 0) {
this.iconClasses.push('fa');
}
this.iconClasses.push(this.node.options.icon);
}
if (this.node.options && this.node.options.href) {
this.href = this.node.options.href;
}
else {
this.href = '';
}
// open/close area for elements with children
if (this.node.hasChildren) {
this.collapseClasses.push('ac-icon'); // base class
this.collapseClasses.push(TreeViewNodeComponent.pfxIcon);
this.collapseClasses.push(TreeViewNodeComponent.opnIcon);
// collapsed by default
this.node.state &= ~TreeNodeState.checked;
}
if (this.node.options && this.node.options.color) {
this.foreColor = this.node.options.color;
}
if (this.node.options && this.node.options.backColor) {
this.backColor = this.node.options.backColor;
}
this.node.stateChange.subscribe((se) => {
this.collapseChanged.emit(this.node);
if (!this.node.stateIsExpandend) {
this.collapseClasses = this.collapseClasses.filter(s => s !== TreeViewNodeComponent.clsIcon);
this.collapseClasses.push(TreeViewNodeComponent.opnIcon);
}
else {
this.collapseClasses = this.collapseClasses.filter(s => s !== TreeViewNodeComponent.opnIcon);
this.collapseClasses.push(TreeViewNodeComponent.clsIcon);
}
this.isExpanded = this.node.stateIsExpandend;
});
}
}
// forward events in the node tree
onNodeClick(node) {
this.nodeClick.emit(node);
}
onCheckChanged(node) {
this.checkChanged.emit(node);
}
onSelectedChanged(node) {
this.selectedChanged.emit(node);
}
onCollapseChanged(node) {
if (this.node.options.collapsable && this.node.hasChildren) {
this.collapseChanged.emit(node);
}
}
handleCheckChange() {
if (this.node.options.checkable && !this.node.stateIsDisabled) {
if (this.node.state & TreeNodeState.checked) {
this.node.state &= ~TreeNodeState.checked;
}
else {
this.node.state |= TreeNodeState.checked;
}
this.checkChanged.emit(this.node);
}
}
handleClick($event) {
$event.stopPropagation();
// always emit click
this.nodeClick.emit(this.node);
}
handleCollapse() {
// if collapsable handle icons and view state
if (this.node.options.collapsable) {
// toggle state
if (this.node.state && this.node.state & TreeNodeState.expanded) {
this.node.state &= ~TreeNodeState.expanded;
}
else {
this.node.state |= TreeNodeState.expanded;
}
}
}
handlePreSelection(state) {
// handle the states according to options
if (this.node.options.selectable && !this.node.stateIsDisabled) {
if (state) {
if (this.node.options && this.node.options.color) {
this.foreColor = this.node.options.backColor;
}
else {
this.foreColor = '#fff';
}
if (this.node.options && this.node.options.backColor) {
this.backColor = this.node.options.color;
}
else {
this.backColor = '#000';
}
}
else {
if (this.node.options && this.node.options.color) {
this.foreColor = this.node.options.color;
}
else {
this.foreColor = '#000';
}
if (this.node.options && this.node.options.backColor) {
this.backColor = this.node.options.backColor;
}
else {
this.backColor = '#fff';
}
}
this.preSelectState = state;
}
}
handleSelection($event) {
// handle the states according to options
if (this.node.options.selectable &&
!this.node.stateIsDisabled &&
this.preSelectState === true) {
if (this.node.state & TreeNodeState.selected) {
this.node.state &= ~TreeNodeState.selected;
}
else {
this.node.state |= TreeNodeState.selected;
}
if (this.node.stateIsSelected) {
if (this.node.options && this.node.options.color) {
this.foreColor = this.node.options.backColor;
}
else {
this.foreColor = '#fff';
}
if (this.node.options && this.node.options.backColor) {
this.backColor = this.node.options.color;
}
else {
this.backColor = '#000';
}
}
else {
if (this.node.options && this.node.options.color) {
this.foreColor = this.node.options.color;
}
else {
this.foreColor = '#000';
}
if (this.node.options && this.node.options.backColor) {
this.backColor = this.node.options.backColor;
}
else {
this.backColor = '#fff';
}
}
this.selectedChanged.emit(this.node);
}
if (!this.href) {
$event.preventDefault();
$event.stopPropagation();
}
}
}
TreeViewNodeComponent.pfxIcon = 'fa';
TreeViewNodeComponent.opnIcon = 'fa-plus';
TreeViewNodeComponent.clsIcon = 'fa-minus';
TreeViewNodeComponent.decorators = [
{ type: Component, args: [{
selector: 'ac-treenode',
template: "<li class=\"treeview\" (click)=\"handleClick($event)\">\n <i class=\"ac-collapse\" [ngClass]=\"collapseClasses\" *ngIf=\"node.hasChildren\" (click)=\"handleCollapse()\"></i>\n <i class=\"ac-collapse\" *ngIf=\"!node.hasChildren\"></i>\n <i class=\"ac-icon\" [ngClass]=\"iconClasses\" [style.color]=\"node.options.iconColor\" *ngIf=\"!node.options.checkable\"></i>\n <input type=\"checkbox\" [id]=\"node.name\" *ngIf=\"node.options.checkable\" \n [checked]=\"node.stateIsChecked\" (click)=\"handleCheckChange()\">\n <label [attr.for]=\"node.name\"></label>\n <a class=\"ac-container\"\n [href]=\"href\"\n [style.color]=\"foreColor\" \n [style.background-color]=\"backColor\" \n (mouseover)=\"handlePreSelection(true)\"\n (mouseout)=\"handlePreSelection(false)\"\n (click)=\"handleSelection($event)\">\n {{ node.text }}\n </a>\n <ul class=\"treeview\" *ngIf=\"node.hasChildren\" [hidden]=\"!isExpanded\">\n <ac-treenode *ngFor=\"let child of node.children\" \n [node]=\"child\"\n (nodeClick)=\"onNodeClick($event)\" \n (checkChanged)=\"onCheckChanged($event)\"\n (selectedChanged)=\"onSelectedChanged($event)\"\n (collapseChanged)=\"onCollapseChanged($event)\">\n </ac-treenode>\n </ul> \n</li>",
styles: ["ul.treeview{list-style:none;margin-left:-2em}li.treeview{box-sizing:border-box;margin-bottom:3px;margin-left:10px}li.treeview a.ac-container{border-radius:2px;display:inline-block;padding:3px;text-decoration:none}li.treeview input[type=checkbox]{display:none}li.treeview input[type=checkbox]+label:before{content:\"\\f096\";font-family:FontAwesome}li.treeview input[type=checkbox]:checked+label:before{content:\"\\f046\"}li.treeview input[type=checkbox]+label{cursor:pointer;display:inline-block;height:20px;margin:-1px 4px 0 0;vertical-align:middle;width:15px}li.treeview i.ac-collapse{margin-left:-1.7em}li.treeview i.ac-collapse,li.treeview i.ac-icon{cursor:pointer;display:inline-block;width:15px}li.treeview .ac-node-disabled{color:silver;cursor:not-allowed}"]
},] }
];
TreeViewNodeComponent.ctorParameters = () => [
{ type: ElementRef },
{ type: Renderer2 }
];
TreeViewNodeComponent.propDecorators = {
node: [{ type: Input }],
nodeClick: [{ type: Output }],
checkChanged: [{ type: Output }],
selectedChanged: [{ type: Output }],
collapseChanged: [{ type: Output }]
};
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{\n  Component,\n  Input,\n  Output,\n  EventEmitter,\n  OnInit,\n  ElementRef,\n  Renderer2\n} from '@angular/core';\nimport { TextTreeNodeModel, TreeNodeModel, TreeNodeState } from '../models';\n\n/**\n * The TreeNodeModel class represents a single TreeNodeModel for the treeview. Actually, this renders the real UI.\n *\n * The component needs this input value:\n *\n * * @Input() node: AcTextTreeNode;\n *\n * The several options are set through the AcTreeNodeOptions object that is being held by the\n * AcTextTreeNode class. This includes colors, icons, and other styles.\n *\n * The component can fire these events:\n *\n * * @Output() nodeClick: EventEmitter<AcTreeNode>;\n * * @Output() checkChanged: EventEmitter<AcTreeNode>;\n * * @Output() selectedChanged: EventEmitter<AcTreeNode>;\n * * @Output() collapseChanged: EventEmitter<AcTreeNode>;\n *\n */\n@Component({\n  selector: 'ac-treenode',\n  templateUrl: './treeviewnode.component.html',\n  styleUrls: ['./treeviewnode.component.css']\n})\nexport class TreeViewNodeComponent implements OnInit {\n\n  constructor(private el: ElementRef, private renderer: Renderer2) {\n    this.nodeClick = new EventEmitter<TreeNodeModel>();\n    this.checkChanged = new EventEmitter<TreeNodeModel>();\n    this.selectedChanged = new EventEmitter<TreeNodeModel>();\n    this.collapseChanged = new EventEmitter<TreeNodeModel>();\n  }\n  private static pfxIcon = 'fa';\n  private static opnIcon = 'fa-plus';\n  private static clsIcon = 'fa-minus';\n\n  /**\n   * The object that controls the node's appearance.\n   */\n  @Input()\n  node: TextTreeNodeModel;\n  /**\n   * Fired on click and hence fired even if any of the other parts are being fired.\n   */\n  @Output()\n  nodeClick: EventEmitter<TreeNodeModel>;\n  /**\n   * Fired if a checkable field is being clicked.\n   */\n  @Output()\n  checkChanged: EventEmitter<TreeNodeModel>;\n  /**\n   * Fired if a selectable field is being clicked.\n   */\n  @Output()\n  selectedChanged: EventEmitter<TreeNodeModel>;\n  /**\n   * Fired if a node collapses or expands.\n   */\n  @Output()\n  collapseChanged: EventEmitter<TreeNodeModel>;\n\n  public href: string;\n  public collapseClasses: Array<string>;\n  public iconClasses: Array<string>;\n  public foreColor: string;\n  public backColor: string;\n  public isExpanded = false;\n\n  private preSelectState: boolean;\n\n  ngOnInit() {\n    // set HTML according to options\n    this.collapseClasses = new Array<string>();\n    this.iconClasses = new Array<string>();\n    // expander area with icon\n    if (this.node) {\n      // expect a font-awesome class with or without fa class\n      if (this.node.options && this.node.options.icon) {\n        if (\n          this.node.options.icon.indexOf(`${TreeViewNodeComponent.pfxIcon} `) !== 0\n        ) {\n          this.iconClasses.push('fa');\n        }\n        this.iconClasses.push(this.node.options.icon);\n      }\n      if (this.node.options && this.node.options.href) {\n        this.href = this.node.options.href;\n      } else {\n        this.href = '';\n      }\n      // open/close area for elements with children\n      if (this.node.hasChildren) {\n        this.collapseClasses.push('ac-icon'); // base class\n        this.collapseClasses.push(TreeViewNodeComponent.pfxIcon);\n        this.collapseClasses.push(TreeViewNodeComponent.opnIcon);\n        // collapsed by default\n        this.node.state &= ~TreeNodeState.checked;\n      }\n      if (this.node.options && this.node.options.color) {\n        this.foreColor = this.node.options.color;\n      }\n      if (this.node.options && this.node.options.backColor) {\n        this.backColor = this.node.options.backColor;\n      }\n      this.node.stateChange.subscribe((se: any) => {\n        this.collapseChanged.emit(this.node);\n        if (!this.node.stateIsExpandend) {\n          this.collapseClasses = this.collapseClasses.filter(\n            s => s !== TreeViewNodeComponent.clsIcon\n          );\n          this.collapseClasses.push(TreeViewNodeComponent.opnIcon);\n        } else {\n          this.collapseClasses = this.collapseClasses.filter(\n            s => s !== TreeViewNodeComponent.opnIcon\n          );\n          this.collapseClasses.push(TreeViewNodeComponent.clsIcon);\n        }\n        this.isExpanded = this.node.stateIsExpandend;\n      });\n    }\n  }\n\n  // forward events in the node tree\n\n  onNodeClick(node: TreeNodeModel) {\n    this.nodeClick.emit(node);\n  }\n\n  onCheckChanged(node: TreeNodeModel) {\n    this.checkChanged.emit(node);\n  }\n\n  onSelectedChanged(node: TreeNodeModel) {\n    this.selectedChanged.emit(node);\n  }\n\n  onCollapseChanged(node: TreeNodeModel) {\n    if (this.node.options.collapsable && this.node.hasChildren) {\n      this.collapseChanged.emit(node);\n    }\n  }\n\n  handleCheckChange(): void {\n    if (this.node.options.checkable && !this.node.stateIsDisabled) {\n      if (this.node.state & TreeNodeState.checked) {\n        this.node.state &= ~TreeNodeState.checked;\n      } else {\n        this.node.state |= TreeNodeState.checked;\n      }\n      this.checkChanged.emit(this.node);\n    }\n  }\n\n  handleClick($event: any): void {\n    $event.stopPropagation();\n    // always emit click\n    this.nodeClick.emit(this.node);\n  }\n\n  handleCollapse(): void {\n    // if collapsable handle icons and view state\n    if (this.node.options.collapsable) {\n      // toggle state\n      if (this.node.state && this.node.state & TreeNodeState.expanded) {\n        this.node.state &= ~TreeNodeState.expanded;\n      } else {\n        this.node.state |= TreeNodeState.expanded;\n      }\n    }\n  }\n\n  handlePreSelection(state: boolean): void {\n    // handle the states according to options\n    if (this.node.options.selectable && !this.node.stateIsDisabled) {\n      if (state) {\n        if (this.node.options && this.node.options.color) {\n          this.foreColor = this.node.options.backColor;\n        } else {\n          this.foreColor = '#fff';\n        }\n        if (this.node.options && this.node.options.backColor) {\n          this.backColor = this.node.options.color;\n        } else {\n          this.backColor = '#000';\n        }\n      } else {\n        if (this.node.options && this.node.options.color) {\n          this.foreColor = this.node.options.color;\n        } else {\n          this.foreColor = '#000';\n        }\n        if (this.node.options && this.node.options.backColor) {\n          this.backColor = this.node.options.backColor;\n        } else {\n          this.backColor = '#fff';\n        }\n      }\n      this.preSelectState = state;\n    }\n  }\n\n  handleSelection($event: any): void {\n    // handle the states according to options\n    if (\n      this.node.options.selectable &&\n      !this.node.stateIsDisabled &&\n      this.preSelectState === true\n    ) {\n      if (this.node.state & TreeNodeState.selected) {\n        this.node.state &= ~TreeNodeState.selected;\n      } else {\n        this.node.state |= TreeNodeState.selected;\n      }\n      if (this.node.stateIsSelected) {\n        if (this.node.options && this.node.options.color) {\n          this.foreColor = this.node.options.backColor;\n        } else {\n          this.foreColor = '#fff';\n        }\n        if (this.node.options && this.node.options.backColor) {\n          this.backColor = this.node.options.color;\n        } else {\n          this.backColor = '#000';\n        }\n      } else {\n        if (this.node.options && this.node.options.color) {\n          this.foreColor = this.node.options.color;\n        } else {\n          this.foreColor = '#000';\n        }\n        if (this.node.options && this.node.options.backColor) {\n          this.backColor = this.node.options.backColor;\n        } else {\n          this.backColor = '#fff';\n        }\n      }\n      this.selectedChanged.emit(this.node);\n    }\n    if (!this.href) {\n      $event.preventDefault();\n      $event.stopPropagation();\n    }\n  }\n}\n"]}