From bbe37cfad83f261e2c24cca3b4f31baa0e818f58 Mon Sep 17 00:00:00 2001
From: amadilsons <joao.amado.95@gmail.com>
Date: Wed, 27 Sep 2017 14:29:52 +0200
Subject: sugested fix for issue #881

---
 client/components/cards/checklists.js | 90 ++++++++++++++++++++++++++++-------
 1 file changed, 72 insertions(+), 18 deletions(-)

(limited to 'client/components/cards/checklists.js')

diff --git a/client/components/cards/checklists.js b/client/components/cards/checklists.js
index bd9d275a..257f1ec8 100644
--- a/client/components/cards/checklists.js
+++ b/client/components/cards/checklists.js
@@ -64,6 +64,7 @@ Template.checklists.onRendered(function () {
 });
 
 BlazeComponent.extendComponent({
+
   addChecklist(event) {
     event.preventDefault();
     const textarea = this.find('textarea.js-add-checklist-item');
@@ -99,6 +100,30 @@ BlazeComponent.extendComponent({
     textarea.focus();
   },
 
+  canModifyCard() {
+    return Meteor.user() && Meteor.user().isBoardMember() && !Meteor.user().isCommentOnly();
+  },
+
+  deleteChecklist() {
+    const checklist = this.currentData().checklist;
+    if (checklist && checklist._id) {
+      Checklists.remove(checklist._id);
+      this.toggleDeleteDialog.set(false);
+    }
+  },
+
+  deleteDialog() {
+    return this.toggleDeleteDialog.get();
+  },
+
+  deleteItem() {
+    const checklist = this.currentData().checklist;
+    const item = this.currentData().item;
+    if (checklist && item && item._id) {
+      checklist.removeItem(item._id);
+    }
+  },
+
   editChecklist(event) {
     event.preventDefault();
     const textarea = this.find('textarea.js-edit-checklist-item');
@@ -107,10 +132,6 @@ BlazeComponent.extendComponent({
     checklist.setTitle(title);
   },
 
-  canModifyCard() {
-    return Meteor.user() && Meteor.user().isBoardMember() && !Meteor.user().isCommentOnly();
-  },
-
   editChecklistItem(event) {
     event.preventDefault();
 
@@ -121,19 +142,9 @@ BlazeComponent.extendComponent({
     checklist.editItem(itemId, title);
   },
 
-  deleteItem() {
-    const checklist = this.currentData().checklist;
-    const item = this.currentData().item;
-    if (checklist && item && item._id) {
-      checklist.removeItem(item._id);
-    }
-  },
-
-  deleteChecklist() {
-    const checklist = this.currentData().checklist;
-    if (checklist && checklist._id) {
-      Checklists.remove(checklist._id);
-    }
+  onCreated() {
+    this.toggleDeleteDialog = new ReactiveVar(false);
+    this.checklistToDelete = null; //Store data context to pass to checklistDeleteDialog template
   },
 
   pressKey(event) {
@@ -146,18 +157,61 @@ BlazeComponent.extendComponent({
   },
 
   events() {
+    const events = {
+      'click .toggle-delete-checklist-dialog'(event) {
+        if($(event.target).hasClass('js-delete-checklist')){
+          this.checklistToDelete = this.currentData().checklist; //Store data context
+        }
+        this.toggleDeleteDialog.set(!this.toggleDeleteDialog.get());
+      },
+    };
+
     return [{
+      ...events,
       'submit .js-add-checklist': this.addChecklist,
       'submit .js-edit-checklist-title': this.editChecklist,
       'submit .js-add-checklist-item': this.addChecklistItem,
       'submit .js-edit-checklist-item': this.editChecklistItem,
       'click .js-delete-checklist-item': this.deleteItem,
-      'click .js-delete-checklist': this.deleteChecklist,
+      'click .confirm-checklist-delete': this.deleteChecklist,
       keydown: this.pressKey,
     }];
   },
 }).register('checklists');
 
+Template.checklistDeleteDialog.onCreated(() => {
+  const $cardDetails = this.$('.card-details');
+  this.scrollState = { position: $cardDetails.scrollTop(), //save current scroll position
+                       top: false //required for smooth scroll animation
+                     };
+  //Callback's purpose is to only prevent scrolling after animation is complete
+  $cardDetails.animate({ scrollTop: 0 }, 500, () => { this.scrollState.top = true; });
+
+  //Prevent scrolling while dialog is open
+  $cardDetails.on('scroll', () => {
+    if(this.scrollState.top) { //If it's already in position, keep it there. Otherwise let animation scroll
+      $cardDetails.scrollTop(0);
+    }
+  });
+});
+
+Template.checklistDeleteDialog.onDestroyed(() => {
+  const $cardDetails = this.$('.card-details');
+  $cardDetails.off('scroll'); //Reactivate scrolling
+  $cardDetails.animate( { scrollTop: this.scrollState.position });
+});
+
+BlazeComponent.extendComponent({
+  events() {
+    const handlers = {
+      'click .confirm-checklist-delete'() {
+        console.log(this.scrollState)
+      },
+    }
+
+    return [ handlers ];
+  }
+}).register('checklistDeleteDialog');
 Template.itemDetail.helpers({
   canModifyCard() {
     return Meteor.user() && Meteor.user().isBoardMember() && !Meteor.user().isCommentOnly();
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