Implement multi-selection

The UI and the internal APIs are still rough around the edges but the
feature is basically working. You can now select multiple cards and
move them together or (un|)assign them a label.

1 files changed, 94 insertions, 0 deletions

diff --git a/client/components/sidebar/sidebarFilters.js b/client/components/sidebar/sidebarFilters.js
new file mode 100644
index 00000000..df0db529
--- /dev/null
+++ b/client/components/sidebar/sidebarFilters.js
@@ -0,0 +1,94 @@
+BlazeComponent.extendComponent({
+  template: function() {
+    return 'filterSidebar';
+  },
+
+  events: function() {
+    return [{
+      'click .js-toggle-label-filter': function(event) {
+        Filter.labelIds.toogle(this._id);
+        Filter.resetExceptions();
+        event.preventDefault();
+      },
+      'click .js-toogle-member-filter': function(event) {
+        Filter.members.toogle(this._id);
+        Filter.resetExceptions();
+        event.preventDefault();
+      },
+      'click .js-clear-all': function(event) {
+        Filter.reset();
+        event.preventDefault();
+      }
+    }];
+  }
+}).register('filterSidebar');
+
+var updateSelectedCards = function(query) {
+  Cards.find(MultiSelection.getMongoSelector()).forEach(function(card) {
+    Cards.update(card._id, query);
+  });
+};
+
+BlazeComponent.extendComponent({
+  template: function() {
+    return 'multiselectionSidebar';
+  },
+
+  mapSelection: function(kind, _id) {
+    return Cards.find(MultiSelection.getMongoSelector()).map(function(card) {
+      var methodName = kind === 'label' ? 'hasLabel' : 'isAssigned';
+      return card[methodName](_id);
+    });
+  },
+
+  allSelectedElementHave: function(kind, _id) {
+    if (MultiSelection.isEmpty())
+      return false;
+    else
+      return _.every(this.mapSelection(kind, _id));
+  },
+
+  someSelectedElementHave: function(kind, _id) {
+    if (MultiSelection.isEmpty())
+      return false;
+    else
+      return _.some(this.mapSelection(kind, _id));
+  },
+
+  events: function() {
+    return [{
+      'click .js-toggle-label-multiselection': function(evt, tpl) {
+        var labelId = this.currentData()._id;
+        var mappedSelection = this.mapSelection('label', labelId);
+        var operation;
+        if (_.every(mappedSelection))
+          operation = '$pull';
+        else if (_.every(mappedSelection, function(bool) { return ! bool; }))
+          operation = '$addToSet';
+        else {
+          var popup = Popup.open('disambiguateMultiLabel');
+          // XXX We need to have a better integration between the popup and the
+          // UI components systems.
+          return popup.call(this.currentData(), evt, tpl);
+        }
+
+        var query = {};
+        query[operation] = {
+          labelIds: labelId
+        };
+        updateSelectedCards(query);
+      }
+    }];
+  }
+}).register('multiselectionSidebar');
+
+Template.disambiguateMultiLabelPopup.events({
+  'click .js-remove-label': function() {
+    updateSelectedCards({$pull: {labelIds: this._id}});
+    Popup.close();
+  },
+  'click .js-add-label': function() {
+    updateSelectedCards({$addToSet: {labelIds: this._id}});
+    Popup.close();
+  }
+});