Attempt to make staff stay in same column where possible.

www/app.js

@@ -224,25 +224,25 @@ async function updateScheduleSettings() {
 
   const staffList = document.getElementById('removeStaff');
   utils.clearChildren(staffList);
-  schedule.notAssignedStaff.forEach(name => {
+  schedule.all_staff_teachers_first.forEach(name => {
     const option = document.createElement('option');
     option.value = name;
-    option.innerText = name;
+    option.innerText = (schedule.assignedStaff.has(name) ? '(!) ' : '') + name;
     staffList.appendChild(option);
   });
-  const canDelStaff = allowEdits && schedule.notAssignedStaff.size > 0;
+  const canDelStaff = allowEdits;
   staffList.disabled = !canDelStaff;
   document.getElementById('delStaff').disabled = !canDelStaff;
 
   const studentList = document.getElementById('removeStudent');
   utils.clearChildren(studentList);
-  schedule.notAssignedStudents.forEach(name => {
+  schedule.all_students.forEach(name => {
     const option = document.createElement('option');
     option.value = name;
-    option.innerText = name;
+    option.innerText = (schedule.assignedStudents.has(name) ? '(!) ' : '') + name;
     studentList.appendChild(option);
   });
-  const canDelStudent = allowEdits && schedule.notAssignedStudents.size > 0;
+  const canDelStudent = allowEdits;
   studentList.disabled = !canDelStudent;
   document.getElementById('delStudent').disabled = !canDelStudent;
 
@@ -731,12 +731,36 @@ document.getElementById('addTeacher').addEventListener('click', async e => {
 });
 
 document.getElementById('delStudent').addEventListener('click', async e => {
-  schedule.delStudent(document.getElementById('removeStudent').value);
+  const name = document.getElementById('removeStudent').value;
+  const person = {name, kind: 'student'};
+  if (schedule.assignedStudents.has(name)) {
+    if (!window.confirm("Are you sure you want to delete the student " + name
+                         + " who is still assigned to events?")) {
+      return;
+    }
+    schedule.assignments.filter(a => a.hasPersonExplicitlyOnAnyDay(person))
+                        .forEach(a => a.removePerson(person));
+    schedule.recomputeNotAssigned();
+  }
+
+  schedule.delStudent(name);
   await saveSchedule();
 });
 
 document.getElementById('delStaff').addEventListener('click', async e => {
-  schedule.delStaff(document.getElementById('removeStaff').value);
+  const name = document.getElementById('removeStaff').value;
+  const person = {name, kind: 'staff'};
+  if (schedule.assignedStudents.has(name)) {
+    if (!window.confirm("Are you sure you want to delete the staff person "
+                         + name + " who is still assigned to events?")) {
+      return;
+    }
+    schedule.assignments.filter(a => a.hasPersonExplicitlyOnAnyDay(person))
+                        .forEach(a => a.removePerson(person));
+    schedule.recomputeNotAssigned();
+  }
+
+  schedule.delStaff(name);
   await saveSchedule();
 });
 
@@ -981,7 +1005,7 @@ function initializeAssignmentForm(assignment) {
   assignmentForm.end_time.value = assignment.end_time.inputValue;
   assignmentForm.squishable.value = assignment.squishable;
   assignmentForm.track.value = Array.isArray(assignment.track)
-                                ? assignment.track.join(',')
+                                ? assignment.track[0]
                                 : (assignment.track ?? "auto");
   assignmentForm.notes.value = assignment.notes ?? "";
 
@@ -1026,16 +1050,28 @@ assignmentForm.squishable.addEventListener('change', async e => {
   await saveSchedule();
 });
 
-assignmentForm.track.addEventListener('change', async e => {
-  const str = e.target.selectedOptions[0].value;
+async function setAssignmentTrackAndWidth() {
+  const width = parseInt(assignmentForm.width.value);
+  selectedAssignment.width = width;
+
+  const str = assignmentForm.track.selectedOptions[0].value;
   if (str === 'auto') selectedAssignment.track = undefined;
   else if (str === 'all') selectedAssignment.track = 'all';
-  else if (str.includes(',')) {
-    selectedAssignment.track = str.split(',').map(s => parseInt(s));
-  } else selectedAssignment.track = parseInt(str);
+  else {
+    const track = parseInt(str);
+    if (width === 1) selectedAssignment.track = track;
+    else {
+      let tracks = [];
+      for (let i = track; i < track + width; i++) tracks.push(i);
+      selectedAssignment.track = tracks;
+    }
+  }
 
   await saveSchedule();
-});
+}
+
+assignmentForm.width.addEventListener('change', setAssignmentTrackAndWidth);
+assignmentForm.track.addEventListener('change', setAssignmentTrackAndWidth);
 
 assignmentForm.notes.addEventListener('change', async e => {
   selectedAssignment.notes = e.target.value;

www/assignment.js

@@ -8,6 +8,7 @@ export default class Assignment {
     this.start_time = new utils.Time(obj.start_time);
     this.end_time = new utils.Time(obj.end_time);
     this.notes = obj.notes;
+    this.width = obj.width ?? (Array.isArray(obj.track) ? obj.track.length : 1);
     this.track = obj.track;
     this.days = obj.days;
     this.people_by_day = obj.people_by_day;
@@ -32,6 +33,10 @@ export default class Assignment {
       this.days = expectedDays;
     }
 
+    this.recomputeAllPeople();
+  }
+
+  recomputeAllPeople() {
     this.all_staff = new Set(Object.values(this.people_by_day)
                                    .flatMap(day => day['staff']));
     this.all_students = new Set(Object.values(this.people_by_day)
@@ -44,6 +49,7 @@ export default class Assignment {
       'start_time': this.start_time.asJsonObject(),
       'end_time': this.end_time.asJsonObject(),
       'notes': this.notes,
+      'width': this.width,
       'track': this.track,
       'days': this.days,
       'people_by_day': this.people_by_day,
@@ -116,6 +122,17 @@ export default class Assignment {
             .some(byDay => byDay[kind].includes(person.name));
   }
 
+  removePerson(person) {
+    const kind = person.kind === 'student' ? 'students' : person.kind;
+    Object.values(this.people_by_day)
+          .forEach(byDay => {
+            const kindList = byDay[kind];
+            const idx = kindList.indexOf(person.name);
+            if (idx !== -1) kindList.splice(idx, 1);
+          });
+    this.recomputeAllPeople();
+  }
+
   asEvent(day, granularity, location_only) {
     const people = this.people_by_day[day];
     const staff = people['staff'] ?? [];
@@ -203,6 +220,8 @@ export default class Assignment {
       'assignment': originalAssignment,
       'start_time': this.start_time,
       'end_time': this.end_time,
+      'day': day,
+      'width': this.width,
       'track': this.track,
       'description': description,
       'classes': classes,

www/event.js

@@ -5,14 +5,16 @@ export default class Event {
     this.assignment = args.assignment;
     this.start_time = args.start_time;
     this.end_time = args.end_time;
+    this.width = args.width;
     this.track = args.track;
     this.description = args.description ?? "ERROR: MISSING DESCRIPTION";
     this.classes = args.classes ?? [];
     this.title = args.title;
+    this.day = args.day;
   }
 
   clone() {
-    return new Event(this);
+    return new Event({...this, description: this.description.cloneNode(true)});
   }
 
   get tracks() {

www/index.html

@@ -84,16 +84,19 @@
         <label>Location: <input name="location" value=""></label><br>
         <label>Start time: <input type="time" required="" name="start_time"></label><br>
         <label>End time: <input type="time" required="" name="end_time"></label><br>
-        <label>Squishable: <input type="checkbox" name="squishable"></label><br>
+        <label>
+          <acronym title="This event can be shortened (squished) or omitted in an indivudal schedule if overlapped by another event.">Squishable</acronym>:
+          <input type="checkbox" name="squishable">
+        </label><br>
+        <label>Width: <input name="width" type="number" min="1" max="9" value="1"></label><br>
         <label>Track:
           <select name="track">
             <option selected="" value="auto">auto</option>
             <option value="all">all (full-width)</option>
-            <option value="0,1">[0,1] left-most two tracks</option>
-            <option value="1,2">[1,2] second and third tracks</option>
             <option value="0">[0] left-most</option>
-            <option value="1,2,3">[1,2,3] second through fourth tracks</option>
-            <option value="0,1,2">[0,1,2] left-most three tracks</option>
+            <option value="1">[1] second</option>
+            <option value="2">[2] third</option>
+            <option value="3">[3] fourth</option>
             </select>
         </label><br>
         <label>Notes: <textarea name="notes"></textarea></label><br>

www/schedule.js

@@ -187,6 +187,10 @@ export default class Schedule {
     return [...utils.setDifference(this.all_staff, this.all_teachers)].sort();
   }
 
+  get all_staff_teachers_first() {
+    return [...this.all_teachers, ...this.all_non_teacher_staff];
+  }
+
   get all_people() {
     return [...this.all_teachers.concat(this.all_non_teacher_staff)
                 .map(name => ({name, kind: 'staff'})),
@@ -198,6 +202,7 @@ export default class Schedule {
     this.all_students.push(name);
     this.all_students.sort();
     this.notAssignedStudents.add(name);
+    return true;
   }
 
   addStaff(name) {
@@ -205,6 +210,7 @@ export default class Schedule {
     this.all_staff.push(name);
     this.all_staff.sort();
     this.notAssignedStaff.add(name);
+    return true;
   }
 
   addTeacher(name) {
@@ -212,6 +218,7 @@ export default class Schedule {
     this.all_teachers.push(name);
     this.all_teachers.sort();
     this.notAssignedStaff.add(name);
+    return true;
   }
 
   delStaff(name) {

www/scheduleGrid.js

@@ -9,7 +9,8 @@ export default class ScheduleGrid {
 
     this.events = ScheduleGrid.assignTracks(args.events);
 
-    this.tracks = [...new Set(this.events.flatMap(e => e.tracks))].sort()
+    this.tracks = [...new Set(this.events.flatMap(e => e.tracks))]
+                  .sort((a, b) => a-b);
 
     // If there's supposed to be only a single column but there's
     // actually multiple tracks, make as many events as possible full width.
@@ -50,21 +51,41 @@ export default class ScheduleGrid {
     eventsWithoutTracks.sort((a, b) => a.start_time.cmp(b.start_time));
     for (const event of eventsWithoutTracks) {
       // Put the event in the first track with space for it.
-      tracks.forEach((track, trackNum) => {
-        if (event.track === undefined) {
-          const hasOverlappingEvents = track.some(e => e.at_same_time_as(event));
-          if (!hasOverlappingEvents) {
-            track.push(event);
-            event.track = trackNum;
+      const tracksWithSpace = Object.keys(tracks).map(t => parseInt(t)).filter(trackNum => {
+        const end = Math.min(trackNum + event.width, tracks.length);
+        for (let i = trackNum; i < end; i++) {
+          if (tracks[i].some(e => e.at_same_time_as(event))) {
+            return false;
           }
         }
-      });
-
-      // No track had space for it, create a new track to put it in.
-      if (event.track === undefined) {
-        event.track = tracks.length;
-        tracks.push([event]);
+        return true;
+      })
+      .map(trackNum => {
+        const staffLists = [...tracks[trackNum], event]
+          .map(e => e.assignment.people_by_day[e.day].staff)
+          .filter(staff => staff.length > 0);
+        const matchingStaff = staffLists.length === 0
+          ? []
+          : staffLists.reduce(utils.setIntersection);
+        return {
+          trackNum,
+          matchingStaff,
+          matchingStaffCount: matchingStaff.size,
+        };
+      })
+      .sort((a, b) => b.matchingStaffCount - a.matchingStaffCount)
+      .map(t => t.trackNum);
+      const trackNum = tracksWithSpace.length > 0 ? tracksWithSpace[0] : tracks.length;
+      const eventTracks = [];
+      for (let i = trackNum; i < trackNum + event.width; i++) {
+        eventTracks.push(i);
+        if (i < tracks.length) {
+          tracks[i].push(event);
+        } else {
+          tracks.push([event]);
+        }
       }
+      event.track = eventTracks.length === 1 ? eventTracks[0] : eventTracks;
     }
 
     // The above code doesn't consider events with track "all".
@@ -141,7 +162,7 @@ export default class ScheduleGrid {
         // Select events of this track in this row.
         const events = this.events
           .filter(e => (e.track === 'all' || e.tracks.includes(track))
-            && e.start_time.cmp(nextRowTime) <0
+            && e.start_time.cmp(nextRowTime) < 0
             && rowTime.cmp(e.end_time) < 0);
         if (events.length === 0) {
           row.appendChild(document.createElement('td'));

www/utils.js

@@ -1,8 +1,8 @@
 export class Time {
   constructor(obj) {
-    this.hour = obj.hour ?? 0;
-    this.minute = obj.minute ?? 0;
-    this.second = obj.second ?? 0;
+    this.hour = parseInt(obj.hour ?? 0);
+    this.minute = parseInt(obj.minute ?? 0);
+    this.second = parseInt(obj.second ?? 0);
   }
 
   static fromInputValue(str) {