svogv
Version:
A decorator based approach for model driven forms, including an advanced DataGrid and a TreeView component.
93 lines • 13 kB
JavaScript
import { Component, Input } from '@angular/core';
import { FormGroup } from '@angular/forms';
/**
* This component creates a complete editor from a viewmodel. The viewmodel should have
* decorators to control the form's behavior. The form can be styled an supports validation.
* It creates one field for each property not decorated with {@link Hidden}decorator.
*
* Example of usage:
* <example-url>/#/editor</example-url>
*/
export class AutoFormComponent {
constructor() {
/**
* Ungrouped element will appear at the end, after all groupes.
* If there are no groups this will be ignored. Optional.
*/
this.ungroupedAfter = true;
this.editors = new Array();
this.groups = new Array();
}
ngOnInit() {
// take all controls as is
const hasDecorators = this.formGroup.__editorModel__;
// loop through all fields
for (const controlName in this.formGroup.controls) {
if (!this.formGroup.controls.hasOwnProperty(controlName)) {
continue;
}
let displayOrder = 0;
let groupOrder = 0;
let groupName;
let groupDesc;
let isInGroup = false;
if (hasDecorators) {
displayOrder = this.formGroup.__editorModel__[`__displayOrder__${controlName}`];
isInGroup = !!this.formGroup.__editorModel__[`__isGrouped__${controlName}`];
if (isInGroup) {
groupName = this.formGroup.__editorModel__[`__groupName__${controlName}`];
groupOrder = this.formGroup.__editorModel__[`__groupOrder__${controlName}`];
groupDesc = this.formGroup.__editorModel__[`__groupDesc__${controlName}`];
}
}
if (!isInGroup) {
// if not part of any group just push to main group
this.editors.push({
key: displayOrder,
editor: controlName
});
}
else {
// check if group already exists
const existingGroupArray = this.groups.filter((g) => g.name === groupName);
const groupExists = existingGroupArray.length === 1;
if (!groupExists) {
this.groups.push({
key: groupOrder,
name: groupName,
desc: groupDesc,
editors: new Array()
});
}
// add field to existing group (assume that here the group always exists)
const existingGroup = this.groups.filter((g) => g.name === groupName)[0];
// and store
existingGroup.editors.push({
key: displayOrder,
editor: controlName
});
}
}
// check the display decorator and sort
this.editors.sort((e, n) => e.key - n.key);
// sort groups
this.groups.sort((e, n) => e.key - n.key);
}
grouped() {
return this.groups && this.groups.length > 0;
}
}
AutoFormComponent.decorators = [
{ type: Component, args: [{
selector: 'ac-autoform',
template: "<ng-content></ng-content>\n<ng-container *ngIf=\"!ungroupedAfter\">\n <ac-editor *ngFor=\"let editor of editors\" [name]=\"editor.editor\" [formGroup]=\"formGroup\"></ac-editor>\n</ng-container>\n<ng-container *ngIf=\"grouped()\">\n <fieldset *ngFor=\"let group of groups\">\n <legend [attr.title]=\"group.desc\" *ngIf=\"group.name\">{{ group.name }}</legend>\n <ac-editor *ngFor=\"let editor of group.editors\" [name]=\"editor.editor\" [formGroup]=\"formGroup\"></ac-editor>\n </fieldset>\n</ng-container>\n<ng-container *ngIf=\"ungroupedAfter\">\n <ac-editor *ngFor=\"let editor of editors\" [name]=\"editor.editor\" [formGroup]=\"formGroup\"></ac-editor>\n</ng-container>\n",
styles: ['fieldset { border-top: 1px silver solid; padding: 10px; }',
'legend { width: auto; padding-left: 10px; padding-right: 10px; font-size: 1em;}']
},] }
];
AutoFormComponent.ctorParameters = () => [];
AutoFormComponent.propDecorators = {
formGroup: [{ type: Input }],
ungroupedAfter: [{ type: Input }]
};
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The viewmodel should have\n * decorators to control the form's behavior. The form can be styled an supports validation.\n * It creates one field for each property not decorated with {@link Hidden}decorator.\n *\n * Example of usage:\n * <example-url>/#/editor</example-url>\n */\n@Component({\n  selector: 'ac-autoform',\n  styles: [\n    'fieldset { border-top: 1px silver solid; padding: 10px; }',\n    'legend { width: auto; padding-left: 10px; padding-right: 10px; font-size: 1em;}'\n  ],\n  templateUrl: './autoform.component.html'\n})\nexport class AutoFormComponent implements OnInit {\n  /**\n   * A reference to the form. Required.\n   */\n  @Input()\n  public formGroup: FormGroup;\n  /**\n   * Ungrouped element will appear at the end, after all groupes.\n   * If there are no groups this will be ignored. Optional.\n   */\n  @Input()\n  public ungroupedAfter = true;\n\n  public editors: { key: number; editor: string }[];\n  public groups: {\n    key: number;\n    name: string;\n    desc: string;\n    editors: { key: number; editor: string }[];\n  }[];\n\n  constructor() {\n    this.editors = new Array<{ key: number; editor: string }>();\n    this.groups = new Array<{\n      key: number;\n      name: string;\n      desc: string;\n      editors: { key: number; editor: string }[];\n    }>();\n  }\n\n  public ngOnInit() {\n    // take all controls as is\n    const hasDecorators: boolean = (this.formGroup as any).__editorModel__;\n    // loop through all fields\n    for (const controlName in this.formGroup.controls) {\n      if (!this.formGroup.controls.hasOwnProperty(controlName)) {\n        continue;\n      }\n      let displayOrder = 0;\n      let groupOrder = 0;\n      let groupName: string;\n      let groupDesc: string;\n      let isInGroup = false;\n      if (hasDecorators) {\n        displayOrder = ( this.formGroup as any).__editorModel__[\n          `__displayOrder__${controlName}`\n        ];\n        isInGroup = !!( this.formGroup as any).__editorModel__[\n          `__isGrouped__${controlName}`\n        ];\n        if (isInGroup) {\n          groupName = ( this.formGroup as any).__editorModel__[\n            `__groupName__${controlName}`\n          ];\n          groupOrder = ( this.formGroup as any).__editorModel__[\n            `__groupOrder__${controlName}`\n          ];\n          groupDesc = ( this.formGroup as any).__editorModel__[\n            `__groupDesc__${controlName}`\n          ];\n        }\n      }\n      if (!isInGroup) {\n        // if not part of any group just push to main group\n        this.editors.push({\n          key: displayOrder,\n          editor: controlName\n        });\n      } else {\n        // check if group already exists\n        const existingGroupArray = this.groups.filter((g) => g.name === groupName);\n        const groupExists = existingGroupArray.length === 1;\n        if (!groupExists) {\n          this.groups.push({\n            key: groupOrder,\n            name: groupName,\n            desc: groupDesc,\n            editors: new Array<{ key: number; editor: string }>()\n          });\n        }\n        // add field to existing group (assume that here the group always exists)\n        const existingGroup = this.groups.filter((g) => g.name === groupName)[0];\n        // and store\n        existingGroup.editors.push({\n          key: displayOrder,\n          editor: controlName\n        });\n      }\n    }\n    // check the display decorator and sort\n    this.editors.sort((e, n) => e.key - n.key);\n    // sort groups\n    this.groups.sort((e, n) => e.key - n.key);\n  }\n\n  public grouped(): boolean {\n    return this.groups && this.groups.length > 0;\n  }\n}\n"]}