From 0c58783a6cc7dfb8f776b9ffbf701387d2417194 Mon Sep 17 00:00:00 2001
From: tophf <tophf@gmx.com>
Date: Sun, 22 Jul 2018 11:59:56 +0300
Subject: [PATCH] add buttons to restore, clone, move a section

---
 _locales/en/messages.json | 12 ++++++
 edit.html                 | 14 ++++++-
 edit/edit.css             | 40 ++++++++++++++++----
 edit/edit.js              |  2 +-
 edit/lint.js              |  5 +--
 edit/sections.js          | 80 ++++++++++++++++++++++++++++++++-------
 edit/util.js              |  5 +++
 7 files changed, 130 insertions(+), 28 deletions(-)

diff --git a/_locales/en/messages.json b/_locales/en/messages.json
index 992a0016..ab45b821 100644
--- a/_locales/en/messages.json
+++ b/_locales/en/messages.json
@@ -205,6 +205,14 @@
   "configOnChangeTooltip": {
     "message": "Autosave and apply changes automatically"
   },
+  "genericAdd": {
+    "message": "Add",
+    "description": "Used in various places for an action that adds something"
+  },
+  "genericClone": {
+    "message": "Clone",
+    "description": "Used in various places for an action that clones something"
+  },
   "genericError": {
     "message": "Error",
     "description": "Used in various places to indicate some error occurred."
@@ -840,6 +848,10 @@
     "message": "Remove section",
     "description": "Label for the button to remove a section"
   },
+  "sectionRestore": {
+    "message": "Restore removed section",
+    "description": "Label for the button to restore a removed section"
+  },
   "shortcuts": {
     "message": "Shortcuts",
     "description": "Go to shortcut configuration"
diff --git a/edit.html b/edit.html
index fd7124b7..d99c00c9 100644
--- a/edit.html
+++ b/edit.html
@@ -121,7 +121,7 @@
     </template>
 
     <template data-id="section">
-      <div>
+      <div class="section">
         <label i18n-text="sectionCode" class="code-label"></label>
         <br>
         <div class="applies-to">
@@ -134,13 +134,23 @@
         </div>
         <div class="edit-actions">
           <button class="remove-section" i18n-text="sectionRemove"></button>
-          <button class="add-section" i18n-text="sectionAdd"></button>
+          <button class="add-section" i18n-long-text="sectionAdd" i18n-short-text="genericAdd"></button>
+          <button class="clone-section" i18n-text="genericClone"></button>
+          <button class="move-section-up"></button>
+          <button class="move-section-down"></button>
           <button class="beautify-section" i18n-text="styleBeautify"></button>
           <button class="test-regexp" i18n-text="styleRegexpTestButton"></button>
         </div>
       </div>
     </template>
 
+    <!-- not using DIV to make our CSS work for #sections > div:only-of-type .remove-section -->
+    <template data-id="deletedSection">
+      <p class="deleted-section">
+        <button class="restore-section" i18n-text="sectionRestore"></button>
+      </p>
+    </template>
+
     <template data-id="searchReplaceDialog">
       <div id="search-replace-dialog">
         <div data-type="main">
diff --git a/edit/edit.css b/edit/edit.css
index c0ff4ece..684a5757 100644
--- a/edit/edit.css
+++ b/edit/edit.css
@@ -264,16 +264,22 @@ input:invalid {
   margin-top: 4em;
 }
 /************ content ***********/
-#sections > div {
+#sections > * {
   margin: 0.7rem;
   padding: 1rem 1rem .3rem;
 }
-#sections > div:first-of-type {
+#sections > *:first-child {
   padding: 0 1rem .3rem;
 }
-#sections > div:not(:first-of-type) {
+#sections > *:not(:first-child) {
   border-top: 2px solid hsl(0, 0%, 80%);
 }
+.add-section:after {
+  content: attr(short-text);
+}
+#sections > div:only-of-type .add-section:after {
+  content: attr(long-text);
+}
 #sections > div:only-of-type .remove-section {
   display: none;
 }
@@ -291,17 +297,35 @@ input:invalid {
 #sections {
   counter-reset: codebox;
 }
-#sections > div > label {
+#sections > .section > label {
   animation: 2s highlight;
   animation-play-state: paused;
   animation-direction: reverse;
   animation-fill-mode: both;
 }
-#sections > div > label::after {
+#sections > .section > label::after {
   counter-increment: codebox;
   content: counter(codebox);
   margin-left: 0.25rem;
 }
+.section:only-of-type .move-section-up,
+.section:only-of-type .move-section-down {
+  display: none;
+}
+.move-section-up:after {
+  content: "";
+  display: block;
+  border-style: solid;
+  border-width: 0 .3em .5em .3em;
+  border-color: transparent transparent currentColor transparent;
+}
+.move-section-down:after {
+  content: "";
+  display: block;
+  border-style: solid;
+  border-width: .5em .3em 0 .3em;
+  border-color: currentColor transparent transparent transparent;
+}
 /* code */
 .code {
   height: 10rem;
@@ -729,7 +753,7 @@ html:not(.usercss) .usercss-only,
 }
 
 #sections .single-editor,
-#sections > div.single-editor:first-of-type {
+#sections > .single-editor:first-child {
   margin: 0;
   padding: 0;
   display: flex;
@@ -908,11 +932,11 @@ html:not(.usercss) .usercss-only,
     flex-direction: column;
     flex: 1;
   }
-  #sections > div {
+  #sections > * {
     margin: 0 .5rem .5rem;
     padding: .5rem 0 0;
   }
-  #sections > div:first-of-type {
+  #sections > *:first-child {
     margin: .5rem;
     padding: 0;
   }
diff --git a/edit/edit.js b/edit/edit.js
index 266555e2..eb41963b 100644
--- a/edit/edit.js
+++ b/edit/edit.js
@@ -332,7 +332,7 @@ function isCleanGlobal() {
 
 function setCleanGlobal() {
   setCleanItem($('#sections'), true);
-  $$('#header, #sections > div').forEach(setCleanSection);
+  $$('#header, #sections > .section').forEach(setCleanSection);
   // forget the dirty applies-to ids from a deleted section after the style was saved
   dirty = {};
 }
diff --git a/edit/lint.js b/edit/lint.js
index 6a762f28..a2c8d71f 100644
--- a/edit/lint.js
+++ b/edit/lint.js
@@ -1,6 +1,7 @@
 /* global CodeMirror messageBox */
 /* global editors makeSectionVisible showCodeMirrorPopup showHelp */
 /* global loadScript require CSSLint stylelint */
+/* global clipString */
 'use strict';
 
 onDOMready().then(loadLinterAssets);
@@ -288,10 +289,6 @@ function updateLintReportInternal(scope, {postponeNewIssues} = {}) {
     result.fixedSome |= lintState.reportDisplayed && oldMarkers.size;
     return result;
   }
-
-  function clipString(str, limit) {
-    return str.length <= limit ? str : str.substr(0, limit) + '...';
-  }
 }
 
 function renderLintReport(someBlockChanged) {
diff --git a/edit/sections.js b/edit/sections.js
index 7e19427b..1a2cb5ac 100644
--- a/edit/sections.js
+++ b/edit/sections.js
@@ -5,6 +5,7 @@ global onChange indicateCodeChange initHooks setCleanGlobal
 global fromMozillaFormat maximizeCodeHeight toggleContextMenuDelete
 global setCleanItem updateTitle updateLintReportIfEnabled renderLintReport
 global showAppliesToHelp beautify regExpTester setGlobalProgress setCleanSection
+global clipString
 */
 'use strict';
 
@@ -14,7 +15,7 @@ function initWithSectionStyle(style, codeIsUpdated) {
   $('#url').href = style.url || '';
   if (codeIsUpdated !== false) {
     editors.length = 0;
-    getSections().forEach(div => div.remove());
+    $('#sections').textContent = '';
     addSections(style.sections.length ? style.sections : [{code: ''}]);
     initHooks();
   }
@@ -76,9 +77,12 @@ function addSections(sections, onAdded = () => {}) {
 
 function addSection(event, section) {
   const div = template.section.cloneNode(true);
-  $('.applies-to-help', div).addEventListener('click', showAppliesToHelp, false);
-  $('.remove-section', div).addEventListener('click', removeSection, false);
-  $('.add-section', div).addEventListener('click', addSection, false);
+  $('.applies-to-help', div).addEventListener('click', showAppliesToHelp);
+  $('.remove-section', div).addEventListener('click', removeSection);
+  $('.add-section', div).addEventListener('click', addSection);
+  $('.clone-section', div).addEventListener('click', cloneSection);
+  $('.move-section-up', div).addEventListener('click', moveSection);
+  $('.move-section-down', div).addEventListener('click', moveSection);
   $('.beautify-section', div).addEventListener('click', beautify);
 
   const code = (section || {}).code || '';
@@ -134,8 +138,11 @@ function addSection(event, section) {
   const sections = $('#sections');
   let cm;
   if (event) {
-    const clickedSection = getSectionForChild(event.target);
-    sections.insertBefore(div, clickedSection.nextElementSibling);
+    let clickedSection = event && getSectionForChild(event.target, {includeDeleted: true});
+    clickedSection.insertAdjacentElement('afterend', div);
+    while (clickedSection && !clickedSection.matches('.section')) {
+      clickedSection = clickedSection.previousElementSibling;
+    }
     const newIndex = getSections().indexOf(clickedSection) + 1;
     cm = setupCodeMirror(div, code, newIndex);
     makeSectionVisible(cm);
@@ -192,7 +199,31 @@ function addAppliesTo(list, type, value) {
   if (toFocus) toFocus.focus();
 }
 
-function setupCodeMirror(sectionDiv, code, index) {
+function cloneSection(event) {
+  const section = getSectionForChild(event.target);
+  addSection(event, getSectionsHashes([section]).pop());
+  setCleanItem($('#sections'), false);
+  updateTitle();
+}
+
+function moveSection(event) {
+  const section = getSectionForChild(event.target);
+  const dir = event.target.closest('.move-section-up') ? -1 : 1;
+  const cm = section.CodeMirror;
+  const index = editors.indexOf(cm);
+  const newIndex = (index + dir + editors.length) % editors.length;
+  const currentNextEl = section.nextElementSibling;
+  const newSection = editors[newIndex].getSection();
+  newSection.insertAdjacentElement('afterend', section);
+  section.parentNode.insertBefore(newSection, currentNextEl || null);
+  cm.focus();
+  editors[index] = editors[newIndex];
+  editors[newIndex] = cm;
+  setCleanItem($('#sections'), false);
+  updateTitle();
+}
+
+function setupCodeMirror(sectionDiv, code, index = editors.length) {
   const cm = CodeMirror(wrapper => {
     $('.code-label', sectionDiv).insertAdjacentElement('afterend', wrapper);
   }, {
@@ -269,7 +300,7 @@ function setupCodeMirror(sectionDiv, code, index) {
     });
   };
 
-  editors.splice(index || editors.length, 0, cm);
+  editors.splice(index, 0, cm);
   return cm;
 }
 
@@ -385,17 +416,17 @@ function toggleSectionHeight(cm) {
   }
 }
 
-function getSectionForChild(e) {
-  return e.closest('#sections > div');
+function getSectionForChild(el, {includeDeleted} = {}) {
+  return el.closest(`#sections > ${includeDeleted ? '*' : '.section'}`);
 }
 
 function getSections() {
-  return $$('#sections > div');
+  return $$('#sections > .section');
 }
 
-function getSectionsHashes() {
+function getSectionsHashes(elements = getSections()) {
   const sections = [];
-  for (const div of getSections()) {
+  for (const div of elements) {
     const meta = {urls: [], urlPrefixes: [], domains: [], regexps: []};
     for (const li of $('.applies-to-list', div).childNodes) {
       if (li.className === template.appliesToEverything.className) {
@@ -430,6 +461,29 @@ function removeAppliesTo(event) {
 function removeSection(event) {
   const section = getSectionForChild(event.target);
   const cm = section.CodeMirror;
+  if (event instanceof Event && (!cm.isClean() || !cm.isBlank())) {
+    const stub = template.deletedSection.cloneNode(true);
+    const MAX_LINES = 10;
+    const lines = [];
+    cm.doc.iter(0, MAX_LINES + 1, ({text}) => lines.push(text) && false);
+    stub.title = t('sectionCode') + '\n' +
+                 '-'.repeat(20) + '\n' +
+                 lines.slice(0, MAX_LINES).map(s => clipString(s, 100)).join('\n') +
+                 (lines.length > MAX_LINES ? '\n...' : '');
+    $('.restore-section', stub).onclick = () => {
+      let el = stub;
+      while (el && !el.matches('.section')) {
+        el = el.previousElementSibling;
+      }
+      const index = el ? editors.indexOf(el) + 1 : 0;
+      editors.splice(index, 0, cm);
+      stub.parentNode.replaceChild(section, stub);
+      setCleanItem(section, false);
+      updateTitle();
+      cm.focus();
+    };
+    section.insertAdjacentElement('afterend', stub);
+  }
   setCleanItem($('#sections'), false);
   removeAreaAndSetDirty(section);
   editors.splice(editors.indexOf(cm), 1);
diff --git a/edit/util.js b/edit/util.js
index 15c963ba..f44d5d95 100644
--- a/edit/util.js
+++ b/edit/util.js
@@ -116,3 +116,8 @@ function sectionsToMozFormat(style) {
       section.code;
   }).join('\n\n');
 }
+
+
+function clipString(str, limit = 100) {
+  return str.length <= limit ? str : str.substr(0, limit) + '...';
+}