make builder usable on mobile

app/javascript/application.js

@@ -76,7 +76,6 @@ document.addEventListener('turbo:submit-end', async (event) => {
 window.customElements.define('template-builder', class extends HTMLElement {
   connectedCallback () {
     this.appElem = document.createElement('div')
-    this.appElem.classList.add('max-h-screen')
 
     this.app = createApp(TemplateBuilder, {
       template: reactive(JSON.parse(this.dataset.template)),

app/javascript/template_builder/area.vue

@@ -4,6 +4,7 @@
     :style="positionStyle"
     @pointerdown.stop
     @mousedown.stop="startDrag"
+    @touchstart="startTouchDrag"
   >
     <div
       v-if="isSelected || isDraw"
@@ -32,7 +33,7 @@
     <div
       v-if="field?.type"
       class="absolute bg-white rounded-t border overflow-visible whitespace-nowrap group-hover:flex group-hover:z-10"
-      :class="{ 'flex z-10': isNameFocus || isSelected, hidden: !isNameFocus && !isSelected }"
+      :class="{ 'flex z-10': isNameFocus || isSelected, invisible: !isNameFocus && !isSelected }"
       style="top: -25px; height: 25px"
       @mousedown.stop
       @pointerdown.stop
@@ -108,12 +109,14 @@
       </span>
     </div>
     <div
+      ref="touchTarget"
       class="absolute top-0 bottom-0 right-0 left-0 cursor-pointer"
     />
     <span
       v-if="field?.type"
-      class="h-2.5 w-2.5 -right-1 rounded-full -bottom-1 border-gray-400 bg-white shadow-md border absolute cursor-nwse-resize"
+      class="h-4 w-4 md:h-2.5 md:w-2.5 -right-1 rounded-full -bottom-1 border-gray-400 bg-white shadow-md border absolute cursor-nwse-resize"
       @mousedown.stop="startResize"
+      @touchstart="startTouchResize"
     />
   </div>
 </template>
@@ -309,6 +312,47 @@ export default {
 
       this.$emit('start-drag')
     },
+    startTouchDrag (e) {
+      if (e.target !== this.$refs.touchTarget) {
+        return
+      }
+
+      this.$refs?.name?.blur()
+
+      e.preventDefault()
+
+      this.isDragged = true
+
+      const rect = e.target.getBoundingClientRect()
+
+      this.selectedAreaRef.value = this.area
+
+      this.dragFrom = { x: rect.left - e.touches[0].clientX, y: rect.top - e.touches[0].clientY }
+
+      this.$el.getRootNode().addEventListener('touchmove', this.touchDrag)
+      this.$el.getRootNode().addEventListener('touchend', this.stopTouchDrag)
+
+      this.$emit('start-drag')
+    },
+    touchDrag (e) {
+      const page = this.$parent.$refs.mask.previousSibling
+      const rect = page.getBoundingClientRect()
+
+      this.area.x = (this.dragFrom.x + e.touches[0].clientX - rect.left) / rect.width
+      this.area.y = (this.dragFrom.y + e.touches[0].clientY - rect.top) / rect.height
+    },
+    stopTouchDrag () {
+      this.$el.getRootNode().removeEventListener('touchmove', this.touchDrag)
+      this.$el.getRootNode().removeEventListener('touchend', this.stopTouchDrag)
+
+      if (this.isDragged) {
+        this.save()
+      }
+
+      this.isDragged = false
+
+      this.$emit('stop-drag')
+    },
     stopDrag () {
       this.$el.getRootNode().removeEventListener('mousemove', this.drag)
       this.$el.getRootNode().removeEventListener('mouseup', this.stopDrag)
@@ -335,6 +379,33 @@ export default {
 
       this.$emit('stop-resize')
 
+      this.save()
+    },
+    startTouchResize (e) {
+      this.selectedAreaRef.value = this.area
+
+      this.$refs?.name?.blur()
+
+      e.preventDefault()
+
+      this.$el.getRootNode().addEventListener('touchmove', this.touchResize)
+      this.$el.getRootNode().addEventListener('touchend', this.stopTouchResize)
+
+      this.$emit('start-resize', 'nwse')
+    },
+    touchResize (e) {
+      const page = this.$parent.$refs.mask.previousSibling
+      const rect = page.getBoundingClientRect()
+
+      this.area.w = (e.touches[0].clientX - rect.left) / rect.width - this.area.x
+      this.area.h = (e.touches[0].clientY - rect.top) / rect.height - this.area.y
+    },
+    stopTouchResize () {
+      this.$el.getRootNode().removeEventListener('touchmove', this.touchResize)
+      this.$el.getRootNode().removeEventListener('touchend', this.stopTouchResize)
+
+      this.$emit('stop-resize')
+
       this.save()
     }
   }

app/javascript/template_builder/builder.vue

@@ -1,9 +1,9 @@
 <template>
   <div
     style="max-width: 1600px"
-    class="mx-auto pl-4 h-full"
+    class="mx-auto pl-3 md:pl-4 h-full"
   >
-    <div class="flex justify-between py-1.5 items-center pr-4">
+    <div class="flex justify-between py-1.5 items-center pr-4 sticky top-0 z-10 bg-base-100">
       <div class="flex space-x-3">
         <a
           v-if="withLogo"
@@ -59,10 +59,7 @@
         </template>
       </div>
     </div>
-    <div
-      class="flex"
-      style="max-height: calc(100% - 60px)"
-    >
+    <div class="flex md:max-h-[calc(100vh-60px)]">
       <div
         ref="previews"
         :style="{ 'display': isBreakpointLg ? 'none' : 'initial' }"
@@ -97,7 +94,7 @@
           />
         </div>
       </div>
-      <div class="w-full overflow-y-auto overflow-x-hidden mt-0.5 pt-0.5">
+      <div class="w-full overflow-y-hidden md:overflow-y-auto overflow-x-hidden mt-0.5 pt-0.5">
         <div
           ref="documents"
           class="pr-3.5 pl-0.5"
@@ -152,17 +149,54 @@
             </div>
           </template>
         </div>
-        <div
-          v-if="sortedDocuments.length"
-          class="sticky md:hidden"
-          style="bottom: 100px"
+        <span
+          v-if="drawField"
+          class="fixed text-center w-full left-1/2 bottom-0 transform -translate-x-1/2"
         >
-          <div class="px-4 py-3 rounded-2xl bg-base-200 flex items-center justify-between ml-4 mr-6">
-            <span class="w-full text-center text-lg">
-              You need a larger screen to use builder tools.
+          <span
+            class="rounded bg-base-200 px-4 py-2 rounded-full inline-flex space-x-2 mx-auto items-center mb-4 z-20 md:hidden"
+          >
+            <component
+              :is="fieldIcons[drawField.type]"
+              :width="20"
+              :height="20"
+              class="inline"
+              :stroke-width="1.6"
+            />
+            <span>
+              Draw {{ fieldNames[drawField.type] }} Field
             </span>
-          </div>
-        </div>
+            <a
+              href="#"
+              class="link block text-center"
+              @click.prevent="drawField = null"
+            >
+              Cancel
+            </a>
+          </span>
+        </span>
+        <FieldType
+          v-if="sortedDocuments.length && !drawField"
+          class="dropdown-top dropdown-end fixed bottom-4 right-4 z-10 md:hidden"
+          :model-value="''"
+          @update:model-value="startFieldDraw($event)"
+        >
+          <label
+            class="btn btn-neutral text-white btn-circle btn-lg group"
+            tabindex="0"
+          >
+            <IconPlus
+              class="group-focus:hidden"
+              width="28"
+              height="28"
+            />
+            <IconX
+              class="hidden group-focus:inline"
+              width="28"
+              height="28"
+            />
+          </label>
+        </FieldType>
       </div>
       <div
         class="relative w-80 flex-none mt-1 pr-4 pl-0.5 hidden md:block"
@@ -214,7 +248,8 @@ import Logo from './logo'
 import Contenteditable from './contenteditable'
 import DocumentPreview from './preview'
 import DocumentControls from './controls'
-import { IconUsersPlus, IconDeviceFloppy, IconInnerShadowTop } from '@tabler/icons-vue'
+import FieldType from './field_type'
+import { IconUsersPlus, IconDeviceFloppy, IconInnerShadowTop, IconPlus, IconX } from '@tabler/icons-vue'
 import { v4 } from 'uuid'
 import { ref, computed } from 'vue'
 
@@ -224,6 +259,9 @@ export default {
     Upload,
     Document,
     Fields,
+    IconPlus,
+    FieldType,
+    IconX,
     Logo,
     Dropzone,
     DocumentPreview,
@@ -300,6 +338,8 @@ export default {
     }
   },
   computed: {
+    fieldIcons: FieldType.computed.fieldIcons,
+    fieldNames: FieldType.computed.fieldNames,
     selectedAreaRef: () => ref(),
     fieldAreasIndex () {
       const areas = {}
@@ -351,6 +391,22 @@ export default {
     this.documentRefs = []
   },
   methods: {
+    startFieldDraw (type) {
+      const field = {
+        name: '',
+        uuid: v4(),
+        required: type !== 'checkbox',
+        areas: [],
+        submitter_uuid: this.selectedSubmitter.uuid,
+        type
+      }
+
+      if (['select', 'multiple', 'radio'].includes(type)) {
+        field.options = ['']
+      }
+
+      this.drawField = field
+    },
     undo () {
       if (this.undoStack.length > 1) {
         this.undoStack.pop()
@@ -448,6 +504,10 @@ export default {
         this.drawField.areas ||= []
         this.drawField.areas.push(area)
 
+        if (this.template.fields.indexOf(this.drawField) === -1) {
+          this.template.fields.push(this.drawField)
+        }
+
         this.drawField = null
 
         this.selectedAreaRef.value = area

app/javascript/template_builder/field_type.vue

@@ -1,20 +1,22 @@
 <template>
   <span class="dropdown">
-    <label
-      tabindex="0"
-      :title="fieldNames[modelValue]"
-      class="cursor-pointer"
-    >
-      <component
-        :is="fieldIcons[modelValue]"
-        :width="buttonWidth"
-        :class="buttonClasses"
-        :stroke-width="1.6"
-      />
-    </label>
+    <slot>
+      <label
+        tabindex="0"
+        :title="fieldNames[modelValue]"
+        class="cursor-pointer"
+      >
+        <component
+          :is="fieldIcons[modelValue]"
+          :width="buttonWidth"
+          :class="buttonClasses"
+          :stroke-width="1.6"
+        />
+      </label>
+    </slot>
     <ul
       tabindex="0"
-      class="dropdown-content menu menu-xs p-2 shadow rounded-box w-52 z-10"
+      class="dropdown-content menu menu-xs p-2 shadow rounded-box w-52 z-10 mb-3"
       :class="menuClasses"
       @click="closeDropdown"
     >

app/javascript/template_builder/page.vue

@@ -1,5 +1,8 @@
 <template>
-  <div class="relative cursor-crosshair select-none">
+  <div
+    class="relative cursor-crosshair select-none"
+    :style="drawField ? 'touch-action: none' : ''"
+  >
     <img
       ref="image"
       :src="image.url"
@@ -32,12 +35,13 @@
       />
     </div>
     <div
-      v-show="resizeDirection || isMove || isDrag || showMask"
+      v-show="resizeDirection || isMove || isDrag || showMask || (drawField && isMobile)"
       id="mask"
       ref="mask"
       class="top-0 bottom-0 left-0 right-0 absolute z-10"
       :class="{ 'cursor-grab': isDrag || isMove, 'cursor-nwse-resize': drawField, [resizeDirectionClasses[resizeDirection]]: !!resizeDirectionClasses }"
       @pointermove="onPointermove"
+      @pointerdown="onStartDraw"
       @dragover.prevent
       @drop="onDrop"
       @pointerup="onPointerup"
@@ -93,6 +97,9 @@ export default {
     }
   },
   computed: {
+    isMobile () {
+      return /android|iphone|ipad/i.test(navigator.userAgent)
+    },
     resizeDirectionClasses () {
       return {
         nwse: 'cursor-nwse-resize',
@@ -125,6 +132,10 @@ export default {
       })
     },
     onStartDraw (e) {
+      if (this.isMobile && !this.drawField) {
+        return
+      }
+
       this.showMask = true
 
       this.$nextTick(() => {