Improve change handling structure

assets/javascripts/discourse/components/wizard-custom-action.js.es6

@@ -1,11 +1,15 @@
-import { default as discourseComputed, observes, on } from 'discourse-common/utils/decorators';
+import { default as discourseComputed } from 'discourse-common/utils/decorators';
 import { equal, empty, or } from "@ember/object/computed";
 import { generateName, selectKitContent } from '../lib/wizard';
+import { computed } from "@ember/object";
 import wizardSchema from '../lib/wizard-schema';
+import UndoChanges from '../mixins/undo-changes';
 import Component from "@ember/component";
 
-export default Component.extend({
-  classNames: 'wizard-custom-action',
+export default Component.extend(UndoChanges, {
+  componentType: 'action',
+  classNameBindings: [':wizard-custom-action', 'visible'],
+  visible: computed('currentActionId', function() { return this.action.id === this.currentActionId }),
   actionTypes: Object.keys(wizardSchema.action.types).map(t => ({ id: t, name: generateName(t) })),
   createTopic: equal('action.type', 'create_topic'),
   updateProfile: equal('action.type', 'update_profile'),

assets/javascripts/discourse/components/wizard-custom-field.js.es6

@@ -1,11 +1,14 @@
-import { default as discourseComputed, observes } from 'discourse-common/utils/decorators';
+import { default as discourseComputed } from 'discourse-common/utils/decorators';
 import { equal, or } from "@ember/object/computed";
+import { computed } from "@ember/object";
 import { selectKitContent } from '../lib/wizard';
-import { default as wizardSchema, setSchemaDefaults } from '../lib/wizard-schema';
+import UndoChanges from '../mixins/undo-changes';
 import Component from "@ember/component";
 
-export default Component.extend({
-  classNames: 'wizard-custom-field',
+export default Component.extend(UndoChanges, {
+  componentType: 'field',
+  classNameBindings: [':wizard-custom-field', 'visible'],
+  visible: computed('currentFieldId', function() { return this.field.id === this.currentFieldId }),
   isDropdown: equal('field.type', 'dropdown'),
   isUpload: equal('field.type', 'upload'),
   isCategory: equal('field.type', 'category'),
@@ -20,20 +23,6 @@ export default Component.extend({
   showMinLength: or('isText', 'isTextarea', 'isUrl', 'isComposer'),
   categoryPropertyTypes: selectKitContent(['id', 'slug']),
   
-  // setTypeDefaults only set defaults if the field type of a specific field
-  // changes, and not when switching between fields. Switching between fields also
-  // changes the field.type property in this component
-  
-  @observes('field.id', 'field.type')
-  setTypeDefaults(ctx, changed) {    
-    if (this.field.id === this.bufferedFieldId) {
-      setSchemaDefaults(this.field, 'field');
-    }
-    if (changed === 'field.type') {
-      this.set('bufferedFieldId', this.field.id);
-    }
-  },
-  
   setupTypeOutput(fieldType, options) {    
     const selectionType = {
       category: 'category',

assets/javascripts/discourse/components/wizard-links.js.es6

@@ -1,6 +1,6 @@
 import { default as discourseComputed, on, observes } from 'discourse-common/utils/decorators';
 import { generateName } from '../lib/wizard';
-import { default as wizardSchema, setSchemaDefaults } from '../lib/wizard-schema';
+import { default as wizardSchema, setWizardDefaults } from '../lib/wizard-schema';
 import { notEmpty } from "@ember/object/computed";
 import { scheduleOnce, bind } from "@ember/runloop";
 import EmberObject from "@ember/object";
@@ -70,6 +70,10 @@ export default Component.extend({
     add() {
       const items = this.get('items');
       const itemType = this.itemType;
+      let params = setWizardDefaults({}, itemType);
+      
+      params.isNew = true;
+      
       let next = 1;
             
       if (items.length) {
@@ -85,10 +89,7 @@ export default Component.extend({
         id = `${this.parentId}_${id}`;
       }
     
-      let params = {
-        id,
-        isNew: true
-      };
+      params.id = id;
       
       let objectArrays = wizardSchema[itemType].objectArrays;
       if (objectArrays) {
@@ -97,8 +98,6 @@ export default Component.extend({
         });
       };
           
-      setSchemaDefaults(params, itemType);
-            
       const newItem = EmberObject.create(params);
       items.pushObject(newItem);
       

assets/javascripts/discourse/components/wizard-mapper-connector.js.es6

@@ -3,6 +3,7 @@ import { gt } from '@ember/object/computed';
 import { computed } from "@ember/object";
 import { defaultConnector } from '../lib/wizard-mapper';
 import { later } from "@ember/runloop";
+import { observes } from "discourse-common/utils/decorators";
 
 export default Component.extend({
   classNameBindings: [':mapper-connector', ':mapper-block', 'hasMultiple::single'],
@@ -22,5 +23,10 @@ export default Component.extend({
         );
       });  
     }
+  },
+  
+  @observes('connector')
+  updated() {
+    this.onUpdate('connector');
   }
 });

assets/javascripts/discourse/components/wizard-mapper-selector.js.es6

@@ -167,6 +167,11 @@ export default Component.extend({
     return this.activeType === type && this[`${type}Enabled`];
   },
   
+  @observes('activeType', 'value')
+  updated() {
+    this.onUpdate('selector');
+  },
+  
   actions: {
     toggleType(type) {
       this.set('activeType', type);

assets/javascripts/discourse/components/wizard-mapper.js.es6

@@ -59,6 +59,8 @@ export default Component.extend({
       this.get('inputs').pushObject(
         newInput(this.inputOptions, this.inputs.length)
       );
+      
+      this.onUpdate(this.property, 'input');
     },
 
     remove(input) {
@@ -68,6 +70,12 @@ export default Component.extend({
       if (inputs.length) {
         inputs[0].set('connector', null);
       }
+      
+      this.onUpdate(this.property, 'input');
+    },
+    
+    inputUpdated(type) {
+      this.onUpdate(this.property, type);
     }
   }
 });

assets/javascripts/discourse/lib/wizard-json.js.es6

@@ -162,6 +162,7 @@ function buildProperties(json) {
     };
 
     json = actionPatch(json); // to be removed - see above
+    
     props.actions = buildObjectArray(json.actions, 'action');
   } else {
     listProperties('wizard').forEach(prop => {

assets/javascripts/discourse/lib/wizard-schema.js.es6

@@ -1,4 +1,4 @@
-import { set } from "@ember/object";
+import { set, get } from "@ember/object";
 
 const wizard = {
   basic: {
@@ -194,25 +194,27 @@ if (Discourse.SiteSettings.wizard_apis_enabled) {
   }
 }
 
-export function setSchemaDefaults(obj, objType) {
-  let objSchema = wizardSchema[objType];
-  let basicDefaults = objSchema.basic;
+export function setWizardDefaults(obj, itemType, opts={}) {
+  const objSchema = wizardSchema[itemType];
+  const basicDefaults = objSchema.basic;
+  const typeDefaults = objSchema.types[obj.type];
   
   Object.keys(basicDefaults).forEach(property => {
-    if (basicDefaults[property]) {
-      set(obj, property, basicDefaults[property]);
+    let defaultValue = get(basicDefaults, property);
+    if (defaultValue) {
+      set(obj, property, defaultValue);
     }
   });
   
-  if (objSchema.types && obj.type) {
-    let typeDefaults = objSchema.types[obj.type];
-    
+  if (typeDefaults) {
     Object.keys(typeDefaults).forEach(property => {
       if (typeDefaults.hasOwnProperty(property)) {
-        set(obj, property, typeDefaults[property]);
+        set(obj, property, get(typeDefaults, property));
       }        
     });
   }
+  
+  return obj;
 }
 
 export default wizardSchema;

assets/javascripts/discourse/lib/wizard.js.es6

@@ -49,11 +49,23 @@ const userProperties = [
   'trust_level'
 ];
 
-function listProperties(type, objectType = null) {
+function listProperties(type, opts={}) {
   let properties = Object.keys(wizardSchema[type].basic);
   
-  if (wizardSchema[type].types && objectType) {
-    properties = properties.concat(Object.keys(wizardSchema[type].types[objectType]));
+  const types = wizardSchema[type].types;
+  
+  if (types) {
+    let typeProperties = [];
+    
+    if (opts.allTypes) {
+      Object.keys(types).forEach(type => {
+        typeProperties = typeProperties.concat(Object.keys(types[type]));
+      });
+    } else if (opts.objectType) {
+      typeProperties = Object.keys(types[opts.objectType]);
+    }
+    
+    properties = properties.concat(typeProperties);
   }
     
   return properties;

assets/javascripts/discourse/mixins/undo-changes.js.es6

@@ -0,0 +1,124 @@
+import { listProperties } from '../lib/wizard';
+import { default as wizardSchema } from '../lib/wizard-schema';
+import { set, get } from "@ember/object";
+import Mixin from "@ember/object/mixin";
+import { observes } from 'discourse-common/utils/decorators';
+
+export default Mixin.create({
+  didInsertElement() {
+    this._super(...arguments);
+    this.setupObservers();
+    
+    const obj = this.get(this.componentType);
+    
+    this.setProperties({
+      originalObject: JSON.parse(JSON.stringify(obj)),
+      undoIcon: obj.isNew ? 'times' : 'undo',
+      undoKey: `admin.wizard.${obj.isNew ? 'clear' : 'undo'}`
+    })
+  },
+
+  willDestroyElement() {
+    this._super(...arguments);
+    this.removeObservers();
+  },
+  
+  removeObservers(objType=null) {
+    const componentType = this.componentType;
+    const obj = this.get(componentType);
+    
+    let opts = {
+      objectType: objType || obj.type
+    }
+
+    listProperties(componentType, opts).forEach(property => {
+      obj.removeObserver(property, this, this.toggleUndo);
+    });
+  },
+  
+  setupObservers(objType=null) {
+    const componentType = this.componentType;
+    const obj = this.get(componentType);
+    
+    let opts = {
+      objectType: objType || obj.type
+    }
+    
+    listProperties(componentType, opts).forEach(property => {
+      obj.addObserver(property, this, this.toggleUndo);
+    });
+  },
+  
+  revertToOriginal(revertBasic=false) {
+    const original = JSON.parse(JSON.stringify(this.originalObject));
+    const componentType = this.componentType;
+    const obj = this.get(componentType);
+    const objSchema = wizardSchema[componentType];
+    const basicDefaults = objSchema.basic;
+    
+    if (revertBasic) {
+      Object.keys(basicDefaults).forEach(property => {
+        let value;
+        
+        if (original.hasOwnProperty(property)) {
+          value = get(original, property);
+        } else if (basicDefaults.hasOwnProperty(property)) {
+          value = get(basicDefaults, property);
+        }
+        
+        set(obj, property, value);
+      });
+    }
+    
+    if (objSchema.types && obj.type) {
+      let typeDefaults = objSchema.types[obj.type];
+      
+      Object.keys(typeDefaults).forEach(property => {
+        let value;
+
+        if (original.type === obj.type && original.hasOwnProperty(property)) {
+          value = get(original, property);
+        } else if (typeDefaults.hasOwnProperty(property)) {
+          value = get(typeDefaults, property);
+        }
+              
+        set(obj, property, value);
+      });
+    }
+  },
+  
+  toggleUndo() {
+    const current = this.get(this.componentType);
+    const original = this.originalObject;
+    this.set('showUndo', !_.isEqual(current, original));
+  },
+  
+  actions: {
+    undoChanges() {
+      const componentType = this.componentType;
+      const original = this.get('originalObject');
+      const obj = this.get(componentType);
+      
+      this.removeObservers(obj.type);
+      this.revertToOriginal(true);
+      this.set('showUndo', false);
+      this.setupObservers(this.get(componentType).type);
+    },
+    
+    changeType(type) {
+      const componentType = this.componentType;
+      const original = this.get('originalObject');
+      const obj = this.get(componentType);
+      
+      this.removeObservers(obj.type);
+      obj.set('type', type);
+      this.revertToOriginal();
+      this.set('showUndo', type !== original.type);
+      this.setupObservers(type);
+    },
+    
+    mappedFieldUpdated(property, type) {
+      this.get(this.componentType).notifyPropertyChange(property);
+    }
+  }
+})

assets/javascripts/discourse/models/custom-wizard.js.es6

@@ -49,7 +49,7 @@ const CustomWizard = EmberObject.extend({
       }
     }
             
-    for (let property of listProperties(type, objectType)) {
+    for (let property of listProperties(type, { objectType })) {
       let value = object.get(property);
       
       result = this.validateValue(property, value, object, type, result);

assets/javascripts/discourse/routes/admin-wizards-wizard-show.js.es6

@@ -22,7 +22,7 @@ export default DiscourseRoute.extend({
     const parentModel = this.modelFor('adminWizardsWizard');
     const wizard = CustomWizard.create((!model || model.create) ? {} : model);
           
-    controller.setProperties({
+    let props = {
       wizardList: parentModel.wizard_list,
       fieldTypes: selectKitContent(Object.keys(parentModel.field_types)),
       userFields: parentModel.userFields,
@@ -32,6 +32,8 @@ export default DiscourseRoute.extend({
       currentStep: wizard.steps[0],
       currentAction: wizard.actions[0],
       creating: model.create
-    });
+    };
+    
+    controller.setProperties(props);
   }
 });

assets/javascripts/discourse/templates/admin-wizards-wizard-show.hbs

@@ -175,13 +175,14 @@
     items=wizard.actions
     generateLabels=true}}
 
-  {{#if currentAction}}
+  {{#each wizard.actions as |action|}}
     {{wizard-custom-action
-      action=currentAction
+      action=action
+      currentActionId=currentAction.id
       wizard=wizard
       removeAction="removeAction"
       wizardFields=wizardFields}}
-  {{/if}}
+  {{/each}}
 
   <div class='admin-wizard-buttons'>
     <button {{action "save"}} disabled={{disableSave}} class='btn btn-primary'>

assets/javascripts/discourse/templates/components/wizard-custom-action.hbs

@@ -1,3 +1,11 @@
+{{#if showUndo}}
+  {{d-button
+    action="undoChanges"
+    icon=undoIcon
+    label=undoKey
+    class="undo-changes"}}
+{{/if}}
+
 <div class="setting">
   <div class="setting-label">
     <label>{{i18n "admin.wizard.type"}}</label>
@@ -7,7 +15,7 @@
     {{combo-box
       value=action.type
       content=actionTypes
-      onChange=(action (mut action.type))
+      onChange=(action "changeType")
       options=(hash
         none="admin.wizard.field.type"
       )}}
@@ -36,6 +44,8 @@
     <div class="setting-value">
       {{wizard-mapper
         inputs=action.title
+        property='title'
+        onUpdate=(action 'mappedFieldUpdated')
         options=(hash
           wizardFieldSelection=true
           userFieldSelection='key,value'
@@ -91,6 +101,8 @@
     <div class="setting-value">
       {{wizard-mapper
         inputs=action.category
+        property='category'
+        onUpdate=(action 'mappedFieldUpdated')
         options=(hash
           textSelection='key,value'
           wizardFieldSelection=true
@@ -110,6 +122,8 @@
     <div class="setting-value">
       {{wizard-mapper
         inputs=action.tags
+        property='tags'
+        onUpdate=(action 'mappedFieldUpdated')
         options=(hash
           tagSelection='output'
           outputDefaultSelection='tag'
@@ -131,6 +145,8 @@
     <div class="setting-value">
       {{wizard-mapper
         inputs=action.recipient
+        property='recipient'
+        onUpdate=(action 'mappedFieldUpdated')
         options=(hash
           textSelection='value,output'
           wizardFieldSelection=true
@@ -152,6 +168,8 @@
     
     {{wizard-mapper 
       inputs=action.profile_updates
+      property='profile_updates'
+      onUpdate=(action 'mappedFieldUpdated')
       options=(hash
         inputTypes='association'
         textSelection='value'
@@ -223,6 +241,8 @@
     <div class="setting-value">
       {{wizard-mapper
         inputs=action.group
+        property='group'
+        onUpdate=(action 'mappedFieldUpdated')
         options=(hash
           textSelection='value,output'
           wizardFieldSelection='key,value,assignment'
@@ -262,6 +282,8 @@
           <div class="setting-value">
             {{wizard-mapper
               inputs=action.custom_fields
+              property='custom_fields'
+              onUpdate=(action 'mappedFieldUpdated')
               options=(hash
                 inputTypes='association'
                 wizardFieldSelection='value'
@@ -282,6 +304,8 @@
           <div class="setting-value">
             {{wizard-mapper
               inputs=action.required
+              property='required'
+              onUpdate=(action 'mappedFieldUpdated')
               options=(hash
                 textSelection='value'
                 wizardFieldSelection=true

assets/javascripts/discourse/templates/components/wizard-custom-field.hbs

@@ -1,3 +1,11 @@
+{{#if showUndo}}
+  {{d-button
+    action="undoChanges"
+    icon=undoIcon
+    label=undoKey
+    class="undo-changes"}}
+{{/if}}
+
 <div class="setting">
   <div class="setting-label">
     <label>{{i18n 'admin.wizard.field.label'}}</label>
@@ -50,7 +58,7 @@
     {{combo-box
       value=field.type
       content=fieldTypes
-      onChange=(action (mut field.type))
+      onChange=(action "changeType")
       options=(hash
         none="admin.wizard.field.type"
       )}}
@@ -106,6 +114,8 @@
     <div class="setting-value">
       {{wizard-mapper
         inputs=field.prefill
+        property='prefill'
+        onUpdate=(action 'mappedFieldUpdated')
         options=prefillOptions}}
     </div>
   </div>
@@ -120,6 +130,8 @@
     <div class="setting-value">
       {{wizard-mapper
         inputs=field.content
+        property='content'
+        onUpdate=(action 'mappedFieldUpdated')
         options=contentOptions}}
     </div>
   </div>

assets/javascripts/discourse/templates/components/wizard-custom-step.hbs

@@ -102,10 +102,11 @@
   items=step.fields
   parentId=step.id}}
 
-{{#if currentField}}
+{{#each step.fields as |field|}}
   {{wizard-custom-field
-    field=currentField
+    field=field
+    currentFieldId=currentField.id
     fieldTypes=fieldTypes
     removeField="removeField"
     wizardFields=wizardFields}}
-{{/if}}
+{{/each}}

assets/javascripts/discourse/templates/components/wizard-mapper-input.hbs

@@ -4,7 +4,8 @@
   inputTypes=true
   inputType=inputType
   connectorType="type"
-  options=options}}
+  options=options
+  onUpdate=onUpdate}}
 
 {{#if hasPairs}}
   <div class="mapper-pairs mapper-block">
@@ -14,7 +15,8 @@
         last=pair.last
         inputType=inputType
         options=options
-        removePair=(action 'removePair')}}
+        removePair=(action 'removePair')
+        onUpdate=onUpdate}}
     {{/each}}
     
     {{#if canAddPair}}
@@ -32,7 +34,8 @@
       connectors=connectors
       connectorType="output"
       inputType=inputType
-      options=options}}
+      options=options
+      onUpdate=onUpdate}}
   {{/if}}
 
   <div class="output mapper-block">
@@ -41,7 +44,8 @@
       inputType=input.type
       value=input.output
       activeType=input.output_type
-      options=options}}
+      options=options
+      onUpdate=onUpdate}}
   </div>
 {{/if}}
 

assets/javascripts/discourse/templates/components/wizard-mapper-pair.hbs

@@ -4,7 +4,8 @@
     inputType=inputType
     value=pair.key
     activeType=pair.key_type
-    options=options}}
+    options=options
+    onUpdate=onUpdate}}
 </div>
 
 {{wizard-mapper-connector
@@ -12,7 +13,8 @@
   connectors=connectors
   connectorType="pair"
   inputType=inputType
-  options=options}}
+  options=options
+  onUpdate=onUpdate}}
 
 <div class="value mapper-block">
   {{wizard-mapper-selector
@@ -20,7 +22,8 @@
     inputType=inputType
     value=pair.value
     activeType=pair.value_type
-    options=options}}
+    options=options
+    onUpdate=onUpdate}}
 </div>
 
 {{#if showJoin}}

assets/javascripts/discourse/templates/components/wizard-mapper.hbs

@@ -1,12 +1,16 @@
 {{#each inputs as |input|}}
   {{#if input.connector}}
-    {{wizard-mapper-connector connector=input.connector connectorType="input"}}
+    {{wizard-mapper-connector
+      connector=input.connector
+      connectorType="input"
+      onUpdate=(action 'inputUpdated')}}
   {{/if}}
   
   {{wizard-mapper-input 
     input=input
     options=inputOptions
-    remove=(action 'remove')}}
+    remove=(action 'remove')
+    onUpdate=(action 'inputUpdated')}}
 {{/each}}
 
 {{#if canAdd}}

assets/stylesheets/common/wizard-admin.scss

@@ -82,12 +82,27 @@
 }
 
 .wizard-custom-field {
-  position: relative;
   background: transparent;
   background-color: dark-light-diff($primary, $secondary, 96%, -65%);
   padding: 20px;
 }
 
+.wizard-custom-field,
+.wizard-custom-action {
+  position: relative;
+  display: none;
+  
+  &.visible {
+    display: flex;
+  }
+  
+  .undo-changes {
+    position: absolute;
+    top: 0;
+    right: 0;
+  }
+}
+
 .admin-wizard-container.settings .wizard-basic-details {
   justify-content: initial;
   

config/locales/client.en.yml

@@ -53,6 +53,8 @@ en:
         group: "Group"
         permitted: "Permitted"
         advanced: "Advanced"
+        undo: "Undo"
+        clear: "Clear"
         
         message:
           select: "Select a wizard, or create a new one"