wip(forms): use events instead of callback

umap/static/umap/js/modules/browser.js

@@ -180,9 +180,8 @@ export default class Browser {
       ],
       ['options.inBbox', { handler: 'Switch', label: translate('Current map view') }],
     ]
-    const builder = new Form(this, fields, {
-      callback: () => this.onFormChange(),
-    })
+    const builder = new Form(this, fields)
+    builder.on('set', () => this.onFormChange())
     let filtersBuilder
     this.formContainer.appendChild(builder.build())
     DomEvent.on(builder.form, 'reset', () => {
@@ -190,9 +189,8 @@ export default class Browser {
     })
     if (this._umap.properties.facetKey) {
       fields = this._umap.facets.build()
-      filtersBuilder = new Form(this._umap.facets, fields, {
-        callback: () => this.onFormChange(),
-      })
+      filtersBuilder = new Form(this._umap.facets, fields)
+      filtersBuilder.on('set', () => this.onFormChange())
       DomEvent.on(filtersBuilder.form, 'reset', () => {
         window.setTimeout(filtersBuilder.syncAll.bind(filtersBuilder))
       })

umap/static/umap/js/modules/data/features.js

@@ -226,15 +226,11 @@ class Feature {
       `icon-${this.getClassName()}`
     )
 
-    let builder = new MutatingForm(
-      this,
-      [['datalayer', { handler: 'DataLayerSwitcher' }]],
-      {
-        callback() {
-          this.edit(event)
-        }, // removeLayer step will close the edit panel, let's reopen it
-      }
-    )
+    let builder = new MutatingForm(this, [
+      ['datalayer', { handler: 'DataLayerSwitcher' }],
+    ])
+    // removeLayer step will close the edit panel, let's reopen it
+    builder.on('set', () => this.edit(event))
     container.appendChild(builder.build())
 
     const properties = []
@@ -734,16 +730,15 @@ export class Point extends Feature {
       ['ui._latlng.lat', { handler: 'FloatInput', label: translate('Latitude') }],
       ['ui._latlng.lng', { handler: 'FloatInput', label: translate('Longitude') }],
     ]
-    const builder = new MutatingForm(this, coordinatesOptions, {
-      callback: () => {
-        if (!this.ui._latlng.isValid()) {
-          Alert.error(translate('Invalid latitude or longitude'))
-          builder.restoreField('ui._latlng.lat')
-          builder.restoreField('ui._latlng.lng')
-        }
-        this.pullGeometry()
-        this.zoomTo({ easing: false })
-      },
+    const builder = new MutatingForm(this, coordinatesOptions)
+    builder.on('set', () => {
+      if (!this.ui._latlng.isValid()) {
+        Alert.error(translate('Invalid latitude or longitude'))
+        builder.restoreField('ui._latlng.lat')
+        builder.restoreField('ui._latlng.lng')
+      }
+      this.pullGeometry()
+      this.zoomTo({ easing: false })
     })
     const fieldset = DomUtil.createFieldset(container, translate('Coordinates'))
     fieldset.appendChild(builder.build())

umap/static/umap/js/modules/data/layer.js

@@ -667,14 +667,12 @@ export class DataLayer extends ServerStored {
       ],
     ]
     DomUtil.createTitle(container, translate('Layer properties'), 'icon-layers')
-    let builder = new MutatingForm(this, metadataFields, {
-      callback: (helper) => {
-        console.log(helper)
-        this._umap.onDataLayersChanged()
-        if (helper.field === 'options.type') {
-          this.edit()
-        }
-      },
+    let builder = new MutatingForm(this, metadataFields)
+    builder.on('set', (helper) => {
+      this._umap.onDataLayersChanged()
+      if (helper.field === 'options.type') {
+        this.edit()
+      }
     })
     container.appendChild(builder.build())
 

umap/static/umap/js/modules/form/builder.js

@@ -3,8 +3,9 @@ import * as Utils from '../utils.js'
 import { SCHEMA } from '../schema.js'
 import { translate } from '../i18n.js'
 
-export class Form {
+export class Form extends Utils.WithEvents {
   constructor(obj, fields, properties) {
+    super()
     this.setProperties(properties)
     this.defaultProperties = {}
     this.obj = obj

umap/static/umap/js/modules/form/fields.js

@@ -97,7 +97,7 @@ class BaseElement {
 
   sync() {
     this.set()
-    this.onPostSync()
+    this.builder.fire('set', this)
   }
 
   set() {
@@ -116,13 +116,6 @@ class BaseElement {
 
   finish() {}
 
-  onPostSync() {
-    if (this.properties.callback) {
-      this.properties.callback(this)
-    }
-    this.builder.onPostSync(this)
-  }
-
   undefine() {
     this.root.classList.add('undefined')
     this.clear()

umap/static/umap/js/modules/share.js

@@ -126,9 +126,8 @@ export default class Share {
       exportUrl.value = window.location.protocol + iframeExporter.buildUrl()
     }
     buildIframeCode()
-    const builder = new MutatingForm(iframeExporter, UIFields, {
-      callback: buildIframeCode,
-    })
+    const builder = new MutatingForm(iframeExporter, UIFields)
+    builder.on('set', buildIframeCode)
     const iframeOptions = DomUtil.createFieldset(
       this.container,
       translate('Embed and link options')

umap/static/umap/js/modules/umap.js

@@ -1029,13 +1029,6 @@ export default class Umap extends ServerStored {
       ],
     ]
     const slideshowBuilder = new MutatingForm(this, slideshowFields, {
-      callback: () => {
-        this.slideshow.load()
-        // FIXME when we refactor formbuilder: this callback is called in a 'postsync'
-        // event, which comes after the call of `setter` method, which will call the
-        // map.render method, which should do this redraw.
-        this.bottomBar.redraw()
-      },
       umap: this,
     })
     slideshow.appendChild(slideshowBuilder.build())
@@ -1351,6 +1344,10 @@ export default class Umap extends ServerStored {
         }
         this.topBar.redraw()
       },
+      'properties.slideshow.active': () => {
+        this.slideshow.load()
+        this.bottomBar.redraw()
+      },
       numberOfConnectedPeers: () => {
         Utils.eachElement('.connected-peers span', (el) => {
           if (this.sync.websocketConnected) {

umap/static/umap/js/modules/utils.js

@@ -449,6 +449,29 @@ export function eachElement(selector, callback) {
   }
 }
 
+export class WithEvents {
+  constructor() {
+    this._callbacks = {}
+  }
+
+  on(eventType, callback) {
+    if (typeof callback !== 'function') return
+    if (this._callbacks[eventType] === undefined) {
+      this._callbacks[eventType] = []
+    }
+
+    this._callbacks[eventType].push(callback)
+  }
+
+  fire(eventType, ...args) {
+    if (this._callbacks[eventType] === undefined) return
+
+    for (const callback of this._callbacks[eventType]) {
+      callback(...args)
+    }
+  }
+}
+
 export const COLORS = [
   'Black',
   'Navy',