Move chunks - UX improvements

- Surround move labels with chip.
- Add move-item icon.
- Remove deprecated dueToMove.

Change-Id: If8d67b9609bee550ebe554bbe32e4fa6e7a425c8
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-unified_test.js b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-unified_test.js
index 24d3635..c08764e 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-unified_test.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder-unified_test.js
@@ -116,7 +116,7 @@
       assert.equal(rowEls.length, 3);
       assert.isTrue(moveControlsRow.classList.contains('movedOut'));
       assert.equal(cells.length, 3);
-      assert.isTrue(cells[2].classList.contains('moveDescription'));
+      assert.isTrue(cells[2].classList.contains('moveLabel'));
       assert.equal(cells[2].textContent, 'Moved out');
     });
 
@@ -139,7 +139,7 @@
       assert.equal(rowEls.length, 3);
       assert.isTrue(moveControlsRow.classList.contains('movedIn'));
       assert.equal(cells.length, 3);
-      assert.isTrue(cells[2].classList.contains('moveDescription'));
+      assert.isTrue(cells[2].classList.contains('moveLabel'));
       assert.equal(cells[2].textContent, 'Moved in');
     });
   });
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.ts b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.ts
index 75f95f3..f628c47 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff-builder/gr-diff-builder.ts
@@ -927,13 +927,20 @@
       controlsClass = 'movedOut';
       descriptionIndex = movedOutIndex;
     }
-    const controls = document.createElement('tr');
+
+    const controls = this._createElement('tr', `moveControls ${controlsClass}`);
     const cells = [...Array(numberOfCells).keys()].map(() =>
-      document.createElement('td')
+      this._createElement('td')
     );
-    controls.classList.add('moveControls', controlsClass);
-    cells[descriptionIndex].classList.add('moveDescription');
-    cells[descriptionIndex].textContent = descriptionText;
+    const moveDescriptionDiv = this._createElement('div', 'moveDescription');
+    const icon = this._createElement('iron-icon');
+    icon.setAttribute('icon', 'gr-icons:move-item');
+    const span = this._createElement('span', '');
+    span.textContent = descriptionText;
+    moveDescriptionDiv.appendChild(icon);
+    moveDescriptionDiv.appendChild(span);
+    cells[descriptionIndex].appendChild(moveDescriptionDiv);
+    cells[descriptionIndex].classList.add('moveLabel');
     cells.forEach(c => {
       controls.appendChild(c);
     });
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-cursor/gr-diff-cursor_test.js b/polygerrit-ui/app/elements/diff/gr-diff-cursor/gr-diff-cursor_test.js
index 718e11b..987a7d0 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-cursor/gr-diff-cursor_test.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-cursor/gr-diff-cursor_test.js
@@ -226,8 +226,7 @@
     assert.equal(cursorElement.side, 'left');
   });
 
-  // To be removed as soon due_to_move (deprecated) is removed
-  suite('moved chunks (dueToMove=true)', () => {
+  suite('moved chunks without line range)', () => {
     setup(done => {
       const renderHandler = function() {
         diffElement.removeEventListener('render', renderHandler);
@@ -247,7 +246,7 @@
             'Sagittis tincidunt torquent, tempor nunc amet.',
             'At rhoncus id.',
           ],
-          due_to_move: true,
+          move_details: {changed: false},
         },
         {
           ab: [
@@ -260,7 +259,7 @@
             'Sagittis tincidunt torquent, tempor nunc amet.',
             'At rhoncus id.',
           ],
-          due_to_move: true,
+          move_details: {changed: false},
         },
         {
           ab: [
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor.ts b/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor.ts
index 77b5499..c3d758c 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor.ts
@@ -366,8 +366,7 @@
     const group = new GrDiffGroup(type, lines);
     group.keyLocation = !!chunk.keyLocation;
     group.dueToRebase = !!chunk.due_to_rebase;
-    group.moveDetails =
-      chunk.move_details || (chunk.due_to_move ? {changed: false} : undefined);
+    group.moveDetails = chunk.move_details;
     group.skip = chunk.skip;
     group.ignoredWhitespaceOnly = !!chunk.common;
     if (chunk.skip) {
@@ -698,9 +697,6 @@
       if (chunk.due_to_rebase) {
         subChunk.due_to_rebase = true;
       }
-      if (chunk.due_to_move) {
-        subChunk.due_to_move = true;
-      }
       if (chunk.move_details) {
         subChunk.move_details = chunk.move_details;
       }
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor_test.js b/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor_test.js
index ce7a3c4..5496b62 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor_test.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-processor/gr-diff-processor_test.js
@@ -1019,16 +1019,6 @@
             }
           });
 
-      test('_breakdownChunk keeps due_to_move for broken down additions',
-          () => {
-            sinon.spy(element, '_breakdown');
-            const chunk = {b: ['blah', 'blah', 'blah'], due_to_move: true};
-            const result = element._breakdownChunk(chunk);
-            for (const subResult of result) {
-              assert.isTrue(subResult.due_to_move);
-            }
-          });
-
       test('_breakdown common case', () => {
         const array = 'Lorem ipsum dolor sit amet, suspendisse inceptos'
             .split(' ');
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.ts b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.ts
index f64d940..ae3e016 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff.ts
@@ -16,6 +16,7 @@
  */
 import '../../../styles/shared-styles';
 import '../../shared/gr-button/gr-button';
+import '../../shared/gr-icons/gr-icons';
 import '../gr-diff-builder/gr-diff-builder-element';
 import '../gr-diff-highlight/gr-diff-highlight';
 import '../gr-diff-selection/gr-diff-selection';
diff --git a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_html.ts b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_html.ts
index ee5e1c0..b9578e8 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_html.ts
+++ b/polygerrit-ui/app/elements/diff/gr-diff/gr-diff_html.ts
@@ -211,18 +211,45 @@
 
     /* dueToMove */
     .dueToMove .content.add .contentText,
-    .dueToMove .moveControls.movedIn .moveDescription,
+    .dueToMove .moveControls.movedIn .moveLabel,
     .delta.total.dueToMove .content.add .contentText {
-      background-color: var(--light-moved-add-highlight-color);
+      background-color: var(--diff-moved-in-background);
     }
+
     .dueToMove .content.remove .contentText,
-    .dueToMove .moveControls.movedOut .moveDescription,
+    .dueToMove .moveControls.movedOut .moveLabel,
     .delta.total.dueToMove .content.remove .contentText {
-      background-color: var(--light-remove-add-highlight-color);
+      background-color: var(--diff-moved-out-background);
     }
-    .moveControls {
-      text-align: right;
-      font-style: italic;
+
+    .delta.dueToMove .movedIn .moveDescription {
+      color: var(--diff-moved-in-background);
+      background-color: var(--diff-moved-in-label-background);
+    }
+    .delta.dueToMove .movedOut .moveDescription {
+      color: var(--diff-moved-out-background);
+      background-color: var(--diff-moved-out-label-background);
+    }
+    .moveLabel {
+      display: flex;
+      justify-content: flex-end;
+      font-family: var(--header-font-family);
+    }
+    .delta.dueToMove .moveDescription {
+      border-radius: var(--spacing-l);
+      padding: var(--spacing-s) var(--spacing-m);
+      margin: var(--spacing-s);
+      font-weight: 500;
+      line-height: var(--spacing-xl);
+      vertical-align: middle;
+      display: flex;
+    }
+
+    .moveDescription iron-icon {
+      color: inherit;
+      margin-right: var(--spacing-s);
+      height: var(--spacing-xl);
+      width: var(--spacing-xl);
     }
 
     /* ignoredWhitespaceOnly */
@@ -284,8 +311,8 @@
       background-color: var(--view-background-color);
     }
     .contextBackground {
-      /* 
-       * One line of background behind the context expanders which they can 
+      /*
+       * One line of background behind the context expanders which they can
        * render on top of, plus some padding.
        */
       height: calc(var(--line-height-normal) + var(--spacing-s));
diff --git a/polygerrit-ui/app/elements/shared/gr-icons/gr-icons.ts b/polygerrit-ui/app/elements/shared/gr-icons/gr-icons.ts
index 7112e3b..1170477 100644
--- a/polygerrit-ui/app/elements/shared/gr-icons/gr-icons.ts
+++ b/polygerrit-ui/app/elements/shared/gr-icons/gr-icons.ts
@@ -112,6 +112,8 @@
       <g id="schedule"><path d="M11.99 2C6.47 2 2 6.48 2 12s4.47 10 9.99 10C17.52 22 22 17.52 22 12S17.52 2 11.99 2zM12 20c-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8-3.58 8-8 8zm.5-13H11v6l5.25 3.15.75-1.23-4.5-2.67z"></path></g>
       <!-- This SVG is a copy from material.io https://material.io/icons/#bug_report-->
       <g id="bug"><path d="M0 0h24v24H0z" fill="none"/><path d="M20 8h-2.81c-.45-.78-1.07-1.45-1.82-1.96L17 4.41 15.59 3l-2.17 2.17C12.96 5.06 12.49 5 12 5c-.49 0-.96.06-1.41.17L8.41 3 7 4.41l1.62 1.63C7.88 6.55 7.26 7.22 6.81 8H4v2h2.09c-.05.33-.09.66-.09 1v1H4v2h2v1c0 .34.04.67.09 1H4v2h2.81c1.04 1.79 2.97 3 5.19 3s4.15-1.21 5.19-3H20v-2h-2.09c.05-.33.09-.66.09-1v-1h2v-2h-2v-1c0-.34-.04-.67-.09-1H20V8zm-6 8h-4v-2h4v2zm0-4h-4v-2h4v2z"/></g>
+      <!-- This SVG is a copy from material.io https://fonts.gstatic.com/s/i/googlematerialicons/move_item/v1/24px.svg -->
+      <g id="move-item"><path d="M15,19H5V5h10v4h2V5c0-1.1-0.89-2-2-2H5C3.9,3,3,3.9,3,5v14c0,1.1,0.9,2,2,2h10c1.11,0,2-0.9,2-2v-4h-2V19z"/><polygon points="20.01,8.01 18.59,9.41 20.17,11 8,11 8,13 20.17,13 18.59,14.59 20.01,15.99 24,12"/></g>
     </defs>
   </svg>
 </iron-iconset-svg>`;
diff --git a/polygerrit-ui/app/styles/themes/app-theme.ts b/polygerrit-ui/app/styles/themes/app-theme.ts
index d7b96c8..73dfe5c 100644
--- a/polygerrit-ui/app/styles/themes/app-theme.ts
+++ b/polygerrit-ui/app/styles/themes/app-theme.ts
@@ -174,7 +174,10 @@
     --diff-trailing-whitespace-indicator: #ff9ad2;
     --light-add-highlight-color: #d8fed8;
     --light-rebased-add-highlight-color: #eef;
-    --light-moved-add-highlight-color: #eef;
+    --diff-moved-in-background: #e4f7fb;
+    --diff-moved-out-background: #f3e8fd;
+    --diff-moved-in-label-background: #007b83;
+    --diff-moved-out-label-background: #681da8;
     --light-remove-add-highlight-color: #fff8dc;
     --light-remove-highlight-color: #ffebee;
     --coverage-covered: #e0f2f1;
diff --git a/polygerrit-ui/app/styles/themes/dark-theme.ts b/polygerrit-ui/app/styles/themes/dark-theme.ts
index 4d3e6d8..c7c8eb1 100644
--- a/polygerrit-ui/app/styles/themes/dark-theme.ts
+++ b/polygerrit-ui/app/styles/themes/dark-theme.ts
@@ -125,7 +125,10 @@
       --diff-trailing-whitespace-indicator: #ff9ad2;
       --light-add-highlight-color: #0f401f;
       --light-rebased-add-highlight-color: #487165;
-      --light-moved-add-highlight-color: #487165;
+      --diff-moved-in-background: #006066;
+      --diff-moved-out-background: #681da8;
+      --diff-moved-in-label-background: #cbf0f8;
+      --diff-moved-out-label-background: #e9d2fd;
       --light-remove-add-highlight-color: #2f3f2f;
       --light-remove-highlight-color: #320404;
       --coverage-covered: #112826;
diff --git a/polygerrit-ui/app/types/diff.d.ts b/polygerrit-ui/app/types/diff.d.ts
index b45b461..ed03dcf 100644
--- a/polygerrit-ui/app/types/diff.d.ts
+++ b/polygerrit-ui/app/types/diff.d.ts
@@ -107,25 +107,12 @@
   edit_b?: DiffIntralineInfo[];
   /** Indicates whether this entry was introduced by a rebase. */
   due_to_rebase?: boolean;
-  /** @deprecated Use move_details instead. */
-  due_to_move?: boolean;
 
   /**
    * Provides info about a move operation the chunk.
    * It's presence indicates the current chunk exists due to a move.
    */
-  move_details?: {
-    /** Indicates whether the content of the chunk changes while moving code */
-    changed: boolean;
-    /**
-     * Indicates the range (line numbers) on the other side of the comparison
-     * where the code related to the current chunk came from/went to.
-     */
-    range: {
-      start: number;
-      end: number;
-    };
-  };
+  move_details?: MoveDetails;
   /**
    * Count of lines skipped on both sides when the file is too large to include
    * all common lines.
@@ -142,6 +129,22 @@
 }
 
 /**
+ * Details about move operation related to a specific chunk.
+ */
+export declare interface MoveDetails {
+  /** Indicates whether the content of the chunk changes while moving code */
+  changed: boolean;
+  /**
+   * Indicates the range (line numbers) on the other side of the comparison
+   * where the code related to the current chunk came from/went to.
+   */
+  range: {
+    start: number;
+    end: number;
+  };
+}
+
+/**
  * The DiffWebLinkInfo entity describes a link on a diff screen to an external
  * site.
  * https://gerrit-review.googlesource.com/Documentation/rest-api-changes.html#diff-web-link-info