Dynamic a two column layout in motion block slides

client/src/app/slides/motions/motion-block/motion-block-slide.component.html

@@ -4,14 +4,18 @@
         <h2><span translate>Motion block</span> – {{ data.data.motions.length }} <span translate>motions</span></h2>
     </div>
 
-    <div *ngFor="let motion of data.data.motions" class="blockitem">
+    <table>
+        <tr *ngFor="let i of rowsArray">
+            <td *ngFor="let j of columnsArray">
                 <div class="ellipsis-overflow">
-            {{ getMotionTitle(motion) }}
+                    {{ getMotionTitle(i, j) }}
                 </div>
-        <div class="white ellipsis-overflow">
+                <div class="white"><!-- ellipsis-overflow?? -->
-            <mat-basic-chip *ngIf="motion.recommendation" disableRipple [ngClass]="getStateCssColor(motion)" class="block-recommendation">
+                    <mat-basic-chip *ngIf="hasRecommendation(i, j)" disableRipple [ngClass]="getStateCssColor(i, j)" class="block-recommendation">
-                {{ getRecommendationLabel(motion) }}
+                        {{ getRecommendationLabel(i, j) }}
                     </mat-basic-chip>
                 </div>
-    </div>
+            </td>
+        </tr>
+    </table>
 </div>

client/src/app/slides/motions/motion-block/motion-block-slide.component.scss

@@ -1,4 +1,9 @@
-.blockitem {
+table {
     line-height: 1;
-    margin-bottom: 10px;
+    width: 100%;
+    table-layout: fixed;
+}
+
+td {
+    min-width: 50%;
 }

client/src/app/slides/motions/motion-block/motion-block-slide.component.ts

@@ -5,9 +5,14 @@ import { TranslateService } from '@ngx-translate/core';
 import { MotionBlockSlideData, MotionBlockSlideMotionRepresentation } from './motion-block-slide-data';
 import { MotionRepositoryService } from 'app/core/repositories/motions/motion-repository.service';
 import { StateCssClassMapping } from 'app/site/motions/models/view-workflow';
-import { BaseMotionSlideComponent, MotionTitleInformation } from '../base/base-motion-slide';
+import { BaseMotionSlideComponent } from '../base/base-motion-slide';
 import { SlideData } from 'app/core/core-services/projector-data.service';
 
+/**
+ * The row threshold to switch from one to a two column layout
+ */
+const TWO_COLUMNS_THRESHOLD = 8;
+
 @Component({
     selector: 'os-motion-block-slide',
     templateUrl: './motion-block-slide.component.html',
@@ -28,7 +33,10 @@ export class MotionBlockSlideComponent extends BaseMotionSlideComponent<MotionBl
     public set data(data: SlideData<MotionBlockSlideData>) {
         if (data && data.data.motions) {
             data.data.motions = data.data.motions.sort((a, b) =>
-                this.languageCollator.compare(this.getMotionIdentifier(a), this.getMotionIdentifier(b))
+                this.languageCollator.compare(
+                    this.motionRepo.getIdentifierOrTitle(a),
+                    this.motionRepo.getIdentifierOrTitle(b)
+                )
             );
         }
         this._data = data;
@@ -38,30 +46,100 @@ export class MotionBlockSlideComponent extends BaseMotionSlideComponent<MotionBl
         return this._data;
     }
 
+    /**
+     * @returns the amount of motions in this block
+     */
+    public get motionsAmount(): number {
+        if (this.data && this.data.data.motions) {
+            return this.data.data.motions.length;
+        } else {
+            return 0;
+        }
+    }
+
+    /**
+     * @returns the amount of rows to display.
+     */
+    public get rows(): number {
+        let rows = this.motionsAmount;
+        if (this.motionsAmount > TWO_COLUMNS_THRESHOLD) {
+            rows = Math.ceil(rows / 2);
+        }
+        return rows;
+    }
+
+    /**
+     * @returns an aray with [1, ..., this.rows]
+     */
+    public get rowsArray(): number[] {
+        const indices = [];
+        const rows = this.rows;
+        for (let i = 0; i < rows; i++) {
+            indices.push(i);
+        }
+        return indices;
+    }
+
+    /**
+     * @returns [0] or [0, 1] if one or two columns are used
+     */
+    public get columnsArray(): number[] {
+        if (this.motionsAmount > TWO_COLUMNS_THRESHOLD) {
+            return [0, 1];
+        } else {
+            return [0];
+        }
+    }
+
     public constructor(translate: TranslateService, motionRepo: MotionRepositoryService) {
         super(translate, motionRepo);
         this.languageCollator = new Intl.Collator(this.translate.currentLang);
     }
 
+    /**
+     * Get the motion for the cell given by i and j
+     *
+     * @param i the row
+     * @param j the column
+     */
+    private getMotion(i: number, j: number): MotionBlockSlideMotionRepresentation {
+        const index = i + this.rows * j;
+        return this.data.data.motions[index];
+    }
+
     /**
      * @returns the title of the given motion.
      */
-    public getMotionTitle(motion: MotionTitleInformation): string {
+    public getMotionTitle(i: number, j: number): string {
-        return this.motionRepo.getTitle(motion);
+        return this.motionRepo.getTitle(this.getMotion(i, j));
     }
 
     /**
      * @returns the identifier (of title if identifier not availabe) of the given motion.
      */
-    public getMotionIdentifier(motion: MotionTitleInformation): string {
+    public getMotionIdentifier(i: number, j: number): string {
-        return this.motionRepo.getIdentifierOrTitle(motion);
+        return this.motionRepo.getIdentifierOrTitle(this.getMotion(i, j));
     }
 
-    public getStateCssColor(motion: MotionBlockSlideMotionRepresentation): string {
+    /**
-        return StateCssClassMapping[motion.recommendation.css_class] || '';
+     * @returns true if the motion in cell i and j has a recommendation
+     */
+    public hasRecommendation(i: number, j: number): boolean {
+        return !!this.getMotion(i, j).recommendation;
     }
 
-    public getRecommendationLabel(motion: MotionBlockSlideMotionRepresentation): string {
+    /**
+     * @returns the css color for the state of the motion in cell i and j
+     */
+    public getStateCssColor(i: number, j: number): string {
+        return StateCssClassMapping[this.getMotion(i, j).recommendation.css_class] || '';
+    }
+
+    /**
+     * @returns the recommendation label for motion in cell i and j
+     */
+    public getRecommendationLabel(i: number, j: number): string {
+        const motion = this.getMotion(i, j);
         let recommendation = this.translate.instant(motion.recommendation.name);
         if (motion.recommendation_extension) {
             recommendation +=

openslides/motions/projector.py

@@ -1,5 +1,5 @@
 import re
-from typing import Any, Dict
+from typing import Any, Dict, Optional
 
 from ..users.projector import get_user_name
 from ..utils.projector import (
@@ -121,13 +121,16 @@ async def get_amendment_base_statute(amendment, all_data):
 
 async def extend_reference_motion_dict(
     all_data: AllData,
-    recommendation: str,
+    recommendation: Optional[str],
     referenced_motions: Dict[int, Dict[str, str]],
 ) -> None:
     """
     Extends a dict of motion ids mapped to their title information.
     The client can replace the placeholders in the recommendation correctly.
     """
+    if recommendation is None:
+        return
+
     # Collect all meantioned motions via [motion:<id>]
     referenced_ids = [
         int(id) for id in motion_placeholder_regex.findall(recommendation)