Add ability to manually discard post drafts

app/assets/javascripts/posts.js

@@ -132,51 +132,81 @@ $(() => {
   });
 
   /**
-   * @typedef {{
-   *  body: string
-   *  comment?: string
-   *  excerpt?: string
-   *  license?: string
-   *  tag_name?: string
-   *  tags?: string[]
-   *  title?: string
-   * }} PostDraft
-   * 
+   * Temporarily displays the draft's status with a given message
+   * @param {JQuery<Element>} $field draftable field
+   * @param {string} message draft status message
+   */
+  const flashDraftStatus = ($field, message) => {
+    const $statusEl = $field.parents('.widget').find('.js-post-draft-status');
+
+    $statusEl.text(message);
+    $statusEl.removeClass('transparent');
+
+    setTimeout(() => {
+      $statusEl.addClass('transparent');
+    }, 1500);
+  };
+
+  /**
    * Attempts to save a post draft
-   * @param {PostDraft} draft post draft
-   * @param {JQuery<Element>} $field body input element
+   * @param {QPixelDraft} draft post draft
+   * @param {JQuery<Element>} $field draftable field
    * @param {boolean} [manual] whether manual draft saving is enabled
    * @returns {Promise<void>}
    */
   const saveDraft = async (draft, $field, manual = false) => {
     const autosavePref = await QPixel.preference('autosave', true);
+
     if (autosavePref !== 'on' && !manual) {
       return;
     }
 
-    const resp = await QPixel.fetchJSON('/posts/save-draft', { ...draft, path: location.pathname });
+    const data = await QPixel.saveDraft(draft);
 
-    if (resp.status === 200) {
-      const $statusEl = $field.parents('.widget').find('.js-post-draft-status');
+    QPixel.handleJSONResponse(data, () => {
+      flashDraftStatus($field, 'draft saved');
+    });
+  };
 
-      $statusEl.removeClass('transparent');
+  /**
+   * Attempts to remove a post draft
+   * @param {JQuery<Element>} $field draftable field
+   * @returns {Promise<boolean>}
+   */
+  const deleteDraft = async ($field) => {
+    const data = await QPixel.deleteDraft();
 
-      setTimeout(() => {
-        $statusEl.addClass('transparent');
-      }, 1500);
-    }
+    return QPixel.handleJSONResponse(data, () => {
+      flashDraftStatus($field, 'draft deleted');
+    });
+  }
+
+  /**
+   * Helper for getting draft-related elements from a given event target
+   * @param {EventTarget} target post field or one of the draft buttons
+   * @returns {{
+   *  $form: JQuery<HTMLFormElement>,
+   *  $field: JQuery<HTMLElement>
+   * }}
+   */
+  const getDraftElements = (target) => {
+    const $tgt = $(target);
+    const $form = $tgt.parents('form');
+    const $field = $form.find('.js-post-field');
+    return { $form, $field };
   };
 
   /**
    * Extracts draft info from a given target
-   * @param {EventTarget} target post input field or "save draft" button
-   * @returns {{ draft: PostDraft, field: any }}
+   * @param {EventTarget} target post field or one of the draft buttons
+   * @returns {{
+   *  draft: QPixelDraft,
+   *  $field: JQuery<HTMLElement>
+   * }}
    */
   const parseDraft = (target) => {
-    const $tgt = $(target);
-    const $form = $tgt.parents('form');
+    const { $field: $bodyField, $form } = getDraftElements(target);
 
-    const $bodyField = $form.find('.js-post-field');
     const $licenseField = $form.find('.js-license-select');
     const $excerptField = $form.find('.js-tag-excerpt');
 
@@ -193,7 +223,7 @@ $(() => {
     const titleText = $titleField.val()?.toString();
     const tagName = $tagNameField.val()?.toString();
 
-    /** @type {PostDraft} */
+    /** @type {QPixelDraft} */
     const draft = {
       body: bodyText,
       comment: commentText,
@@ -204,12 +234,17 @@ $(() => {
       title: titleText,
     };
 
-    return { draft, field: $bodyField };
+    return { draft, $field: $bodyField };
   };
 
+  $('.js-delete-draft').on('click', async (ev) => {
+    const { $field } = getDraftElements(ev.target);
+    await deleteDraft($field);
+  });
+
   $('.js-save-draft').on('click', async (ev) => {
-    const { draft, field } = parseDraft(ev.target);
-    await saveDraft(draft, field, true);
+    const { draft, $field } = parseDraft(ev.target);
+    await saveDraft(draft, $field, true);
   });
 
   let featureTimeout = null;
@@ -230,8 +265,8 @@ $(() => {
   $(draftFieldsSelectors.join(', ')).on('keyup change', (ev) => {
     clearTimeout(draftTimeout);
     draftTimeout = setTimeout(() => {
-      const { draft, field } = parseDraft(ev.target);
-      saveDraft(draft, field);
+      const { draft, $field } = parseDraft(ev.target);
+      saveDraft(draft, $field);
     }, 1000);
   });
 
@@ -314,35 +349,37 @@ $(() => {
 
   $postFields.parents('form').on('submit', async (ev) => {
     const $tgt = $(ev.target);
-    const field = $tgt.find('.post-field');
+    const $field = $tgt.find('.js-post-field');
 
     const draftDeleted = $tgt.attr('data-draft-deleted') === 'true';
     const isValidated = $tgt.attr('data-validated') === 'true';
 
     if (draftDeleted && isValidated) {
       return;
     }
+
     ev.preventDefault();
 
     // Draft handling
     if (!draftDeleted) {
-      const resp = await QPixel.fetchJSON('/posts/delete-draft', { path: location.pathname });
-      if (resp.status === 200) {
+      const status = await deleteDraft($field);
+
+      if (status) {
         $tgt.attr('data-draft-deleted', 'true');
 
         if (isValidated) {
           $tgt.submit();
         }
       }
       else {
-        QPixel.createNotification('danger', `Failed to delete post draft. (${resp.status})`);
+        QPixel.createNotification('danger', `Failed to delete post draft. (${status})`);
       }
     }
 
 
     // Validation
     if (!isValidated) {
-      const text = $(field).val()?.toString();
+      const text = $field.val()?.toString();
       const validated = QPixel.validatePost(text);
       if (validated[0] === true) {
         $tgt.attr('data-validated', 'true');
@@ -384,7 +421,7 @@ $(() => {
   });
 
   $('.js-draft-loaded').each((_i, e) => {
-    $(e).parents('.widget').after(`<div class="notice is-info has-font-size-caption">
+    $(e).parents('.widget').after(`<div class="notice is-info has-font-size-caption js-draft-notice">
       <i class="fas fa-exclamation-circle"></i> <strong>Draft loaded.</strong>
       You had edited this before but haven't saved it. We loaded the edits for you.
     </div>`);
@@ -471,7 +508,9 @@ $(() => {
       return;
     }
 
-    await QPixel.fetchJSON('/posts/delete-draft', { path: location.pathname });
+    const { $field } = getDraftElements(ev.target);
+
+    await deleteDraft($field);
 
     location.href = $btn.attr('href');
   });

app/assets/javascripts/qpixel_api.js

@@ -444,14 +444,18 @@ window.QPixel = {
   },
 
   handleJSONResponse: (data, onSuccess, onFinally) => {
-    if (data.status === 'success') {
+    const is_success = data.status === 'success';
+
+    if (is_success) {
       onSuccess(data);
     }
     else {
       QPixel.createNotification('danger', data.message);
     }
 
     onFinally?.(data);
+
+    return is_success;
   },
 
   flag: async (flag) => {
@@ -475,6 +479,18 @@ window.QPixel = {
     return data;
   },
 
+  deleteDraft: async () => {
+    const resp = await QPixel.fetchJSON(`/posts/delete-draft`, {
+      path: location.pathname
+    }, {
+      headers: { 'Accept': 'application/json' }
+    });
+
+    const data = await resp.json();
+
+    return data;
+  },
+
   undeleteComment: async (id) => {
     const resp = await QPixel.fetchJSON(`/comments/${id}/delete`, {}, {
       headers: { 'Accept': 'application/json' },
@@ -494,5 +510,16 @@ window.QPixel = {
     const data = await resp.json();
 
     return data;
-  }
+  },
+
+  saveDraft: async (draft) => {
+    const resp = await QPixel.fetchJSON('/posts/save-draft', {
+      ...draft,
+      path: location.pathname
+    });
+
+    const data = await resp.json();
+
+    return data;
+  },
 };

app/views/shared/_draft_tools.html.erb

@@ -0,0 +1,16 @@
+<div class="button-list is-gutterless">
+  <a href="javascript:void(0)"
+     class="button is-muted is-outlined is-icon-only js-save-draft"
+     aria-label="Save draft"
+     title="Save draft"
+     role="button">
+    <i class="fas fa-save"></i>
+  </a>
+  <a href="javascript:void(0)"
+     class="button is-muted is-outlined is-icon-only js-delete-draft"
+     aria-label="Delete draft"
+     title="Delete draft"
+     role="button">
+    <i class="fas fa-trash has-color-red"></i>
+  </a>
+</div>

app/views/shared/_markdown_tools.html.erb

@@ -81,10 +81,5 @@
     </div>
   </div>
 
-  <div class="button-list is-gutterless">
-    <a href="javascript:void(0)" class="button is-muted is-outlined is-icon-only js-save-draft" aria-label="Save draft"
-       title="Save draft" role="button">
-      <i class="fas fa-save"></i>
-    </a>
-  </div>
+  <%= render 'shared/draft_tools' %>
 </div>

app/views/users/edit_profile.html.erb

@@ -22,7 +22,12 @@
 
 <%= form_for current_user, url: update_user_profile_path do |f| %>
   <div class="form-group has-padding-2">
-    <img alt="user avatar" class="has-float-right has-margin-2 avatar-64" title="Current avatar" src="<%= avatar_url(current_user, 64) %>" height="64" width="64" />
+    <img alt="user avatar"
+         class="has-float-right has-margin-2 avatar-64"
+         title="Current avatar"
+         src="<%= avatar_url(current_user, 64) %>"
+         height="64"
+         width="64" />
     <%= f.label :avatar, class: "form-element" %>
     <div class="form-caption">
       An optional profile picture. Max file size <%= SiteSetting['MaxUploadSize'] %>.
@@ -34,28 +39,43 @@
   <div class="form-group has-padding-2">
     <%= f.label :username, class: "form-element" %>
     <div class="form-caption">What other people call you.</div>
-    <%= f.text_field :username, class: 'form-element', autocomplete: 'off', data: { character_count: '.js-character-count-user-name' } %>
+    <%= f.text_field :username,
+                     class: 'form-element',
+                     autocomplete: 'off',
+                     data: { character_count: '.js-character-count-user-name' } %>
     <%= render 'shared/char_count', type: 'user-name', cur: current_user.username&.length, min: 3, max: 50 %>
   </div>
 
-  <%= render 'shared/body_field', f: f, field_name: :profile_markdown, field_label: 'Profile', post: current_user,
-            cur_length: current_user.profile_markdown&.length, min_length: 0 %>
+  <%= render 'shared/body_field',
+             f: f,
+             field_name: :profile_markdown,
+             field_label: 'Profile',
+             post: current_user,
+             cur_length: current_user.profile_markdown&.length,
+             min_length: 0 %>
 
   <% unless current_user.community_user.privilege?('unrestricted') %>
     <p>Note: Links are not shown publicly until you have earned the Participate Everywhere ability.</p>
   <% end %>
   <div class="post-preview"></div>
 
   <div>
-    <p>Extra fields -- your web site, GitHub profile, social-media usernames, whatever you want. Only values that begin with "http" are rendered as links.</p>
+    <p>Extra fields -- your web site, GitHub profile, social-media usernames, whatever you want.<br/>
+    Only values that begin with "http" are rendered as links.</p>
     <div class="grid">
       <%= f.fields_for :user_websites do |w| %>
       <div class="grid grid--cell is-12 is-12-sm">
         <div class="grid grid--cell is-3 is-3-sm">
-          <div class="grid--cell is-12"><%= w.text_field :label, class: 'form-element', autocomplete: 'off', placeholder: 'label' %></div>
+          <div class="grid--cell is-12"><%= w.text_field :label,
+                                                         class: 'form-element',
+                                                         autocomplete: 'off',
+                                                         placeholder: 'label' %></div>
         </div>
         <div class="grid grid--cell is-6 is-9-sm">
-          <div class="grid--cell is-12"><%= w.text_field :url, class: 'form-element', autocomplete: 'off', placeholder: 'https://...' %></div>
+          <div class="grid--cell is-12"><%= w.text_field :url,
+                                                         class: 'form-element',
+                                                         autocomplete: 'off',
+                                                         placeholder: 'https://...' %></div>
         </div>
       </div>
       <% end %>
@@ -70,6 +90,11 @@
 
 
   <%= f.submit 'Save', class: 'button is-filled' %>
+  <%= link_to 'Cancel',
+              users_me_path,
+              class: 'button is-muted is-outlined js-cancel-edit',
+              data: { question_body: t('posts.unsaved_changes_confirmation') },
+              role: 'button' %>
 <% end %>
 
 <% if SiteSetting['AllowContentTransfer'] && current_user.se_acct_id.nil? %>