FEATURE: add image delete button in preview. (#17624)

This commit adds a delete button to the composer preview next to the image scale buttons.

Reference: https://meta.discourse.org/t/image-remover-button-to-composer-preview/233005

app/assets/javascripts/discourse/app/components/composer-editor.js

@@ -594,6 +594,8 @@ export default Component.extend(ComposerUploadUppy, {
 
   resetImageControls(buttonWrapper) {
     const imageResize = buttonWrapper.querySelector(".scale-btn-container");
+    const imageDelete = buttonWrapper.querySelector(".delete-image-button");
+
     const readonlyContainer = buttonWrapper.querySelector(
       ".alt-text-readonly-container"
     );
@@ -602,6 +604,8 @@ export default Component.extend(ComposerUploadUppy, {
     );
 
     imageResize.removeAttribute("hidden");
+    imageDelete.removeAttribute("hidden");
+
     readonlyContainer.removeAttribute("hidden");
     buttonWrapper.removeAttribute("editing");
     editContainer.setAttribute("hidden", "true");
@@ -647,6 +651,7 @@ export default Component.extend(ComposerUploadUppy, {
 
     const buttonWrapper = event.target.closest(".button-wrapper");
     const imageResize = buttonWrapper.querySelector(".scale-btn-container");
+    const imageDelete = buttonWrapper.querySelector(".delete-image-button");
 
     const readonlyContainer = buttonWrapper.querySelector(
       ".alt-text-readonly-container"
@@ -660,6 +665,7 @@ export default Component.extend(ComposerUploadUppy, {
 
     buttonWrapper.setAttribute("editing", "true");
     imageResize.setAttribute("hidden", "true");
+    imageDelete.setAttribute("hidden", "true");
     readonlyContainer.setAttribute("hidden", "true");
     editContainerInput.value = altText.textContent;
     editContainer.removeAttribute("hidden");
@@ -687,10 +693,30 @@ export default Component.extend(ComposerUploadUppy, {
     this.resetImageControls(buttonWrapper);
   },
 
+  @bind
+  _handleImageDeleteButtonClick(event) {
+    if (!event.target.classList.contains("delete-image-button")) {
+      return;
+    }
+    const index = parseInt(
+      event.target.closest(".button-wrapper").dataset.imageIndex,
+      10
+    );
+    const matchingPlaceholder =
+      this.get("composer.reply").match(IMAGE_MARKDOWN_REGEX);
+    this.appEvents.trigger(
+      "composer:replace-text",
+      matchingPlaceholder[index],
+      "",
+      { regex: IMAGE_MARKDOWN_REGEX, index }
+    );
+  },
+
   _registerImageAltTextButtonClick(preview) {
     preview.addEventListener("click", this._handleAltTextEditButtonClick);
     preview.addEventListener("click", this._handleAltTextOkButtonClick);
     preview.addEventListener("click", this._handleAltTextCancelButtonClick);
+    preview.addEventListener("click", this._handleImageDeleteButtonClick);
     preview.addEventListener("keypress", this._handleAltTextInputKeypress);
   },
 

app/assets/javascripts/discourse/tests/acceptance/composer-image-preview-test.js

@@ -340,4 +340,39 @@ acceptance("Composer - Image Preview", function (needs) {
       "alt text updated"
     );
   });
+
+  test("Image delete button", async function (assert) {
+    await visit("/");
+    await click("#create-topic");
+
+    let uploads = [
+      "![image_example_0|666x500](upload://q4iRxcuSAzfnbUaCsbjMXcGrpaK.jpeg)",
+      "![image_example_1|481x480](upload://p1ijebM2iyQcUswBffKwMny3gxu.jpeg)",
+    ];
+
+    await fillIn(".d-editor-input", uploads.join("\n"));
+
+    uploads[0] = ""; // delete the first image.
+
+    //click on the remove button of the first image
+    await click(".button-wrapper[data-image-index='0'] .delete-image-button");
+
+    assert.strictEqual(
+      query(".d-editor-input").value,
+      uploads.join("\n"),
+      "Image should be removed from the editor"
+    );
+
+    assert.equal(
+      query(".d-editor-input").value.includes("image_example_0"),
+      false,
+      "It shouldn't have the first image"
+    );
+
+    assert.equal(
+      query(".d-editor-input").value.includes("image_example_1"),
+      true,
+      "It should have the second image"
+    );
+  });
 });

app/assets/javascripts/pretty-text/engines/discourse-markdown/image-controls.js

@@ -70,12 +70,13 @@ function buildScaleButton(selectedScale, scale) {
 function buildImageShowAltTextControls(altText) {
   return `
   <span class="alt-text-readonly-container">
+  <span class="alt-text-edit-btn">
+  <svg aria-hidden="true" class="fa d-icon d-icon-pencil svg-icon svg-string"><use href="#pencil-alt"></use></svg>
+</span>
+
   <span class="alt-text" aria-label="${I18n.t(
     "composer.image_alt_text.aria_label"
   )}">${altText}</span>
-    <span class="alt-text-edit-btn">
-      <svg aria-hidden="true" class="fa d-icon d-icon-pencil svg-icon svg-string"><use href="#pencil-alt"></use></svg>
-    </span>
   </span>
   `;
 }
@@ -94,6 +95,17 @@ function buildImageEditAltTextControls(altText) {
   `;
 }
 
+function buildImageDeleteButton() {
+  return `
+  <span class="delete-image-button" aria-label="${I18n.t(
+    "composer.delete_image_button"
+  )}">
+  <svg class="fa d-icon d-icon-trash-alt svg-icon svg-string" xmlns="http://www.w3.org/2000/svg">
+  <use href="#far-trash-alt"></use>
+  </svg>
+   </span>
+  `;
+}
 // We need this to load after `upload-protocol` which is priority 0
 export const priority = 1;
 
@@ -112,13 +124,6 @@ function ruleWithImageControls(oldRule) {
       result += oldRule(tokens, idx, options, env, slf);
 
       result += `<span class="button-wrapper" data-image-index="${index}">`;
-
-      result += `<span class="scale-btn-container">`;
-      result += SCALES.map((scale) =>
-        buildScaleButton(selectedScale, scale)
-      ).join("");
-      result += `</span>`;
-
       result += buildImageShowAltTextControls(
         token.attrs[token.attrIndex("alt")][1]
       );
@@ -126,6 +131,13 @@ function ruleWithImageControls(oldRule) {
         token.attrs[token.attrIndex("alt")][1]
       );
 
+      result += `<span class="scale-btn-container">`;
+      result += SCALES.map((scale) =>
+        buildScaleButton(selectedScale, scale)
+      ).join("");
+      result += `</span>`;
+      result += buildImageDeleteButton();
+
       result += "</span></span>";
 
       return result;
@@ -148,16 +160,17 @@ export function setup(helper) {
       "span.scale-btn[data-scale]",
       "span.button-wrapper[data-image-index]",
       "span[aria-label]",
-
+      "span[class=delete-image-button]",
       "span.alt-text-container",
-
       "span.alt-text-readonly-container",
       "span.alt-text-readonly-container.alt-text",
       "span.alt-text-readonly-container.alt-text-edit-btn",
       "svg[class=fa d-icon d-icon-pencil svg-icon svg-string]",
       "use[href=#pencil-alt]",
+      "use[href=#far-trash-alt]",
 
       "span.alt-text-edit-container",
+      "span.delete-image-button",
       "span[hidden=true]",
       "input[type=text]",
       "input[class=alt-text-input]",
@@ -166,6 +179,7 @@ export function setup(helper) {
       "use[href=#check]",
       "button[class=alt-text-edit-cancel btn-default]",
       "svg[class=fa d-icon d-icon-times svg-icon svg-string]",
+      "svg[class=fa d-icon d-icon-trash-alt svg-icon svg-string]",
       "use[href=#times]",
     ]);
 

app/assets/stylesheets/common/d-editor.scss

@@ -200,7 +200,8 @@
 
     .scale-btn-container,
     .alt-text-readonly-container,
-    .alt-text-edit-container {
+    .alt-text-edit-container,
+    .delete-image-button {
       background: var(--secondary);
       display: flex;
       height: var(--resizer-height);
@@ -245,6 +246,7 @@
 
       .alt-text-edit-btn {
         cursor: pointer;
+        color: var(--tertiary);
 
         svg {
           padding-right: 0.5em;
@@ -282,6 +284,15 @@
       }
     }
 
+    .delete-image-button {
+      cursor: pointer;
+      color: var(--danger);
+
+      .d-icon-trash-alt {
+        margin-left: 0.5em;
+      }
+    }
+
     svg {
       pointer-events: none;
     }

config/locales/client.en.yml

@@ -2304,6 +2304,8 @@ en:
       image_alt_text:
         aria_label: Alt text for image
 
+      delete_image_button: Delete Image  
+
     notifications:
       tooltip:
         regular: