Implement the Tag Editor view

closes #2425

- creates custom view for the tag editor
This commit is contained in:
Harry Wolff 2014-06-06 23:02:56 -04:00
parent 145dffbc73
commit 1818f631bd
3 changed files with 254 additions and 11 deletions

View File

@ -1,16 +1,7 @@
<footer id="publish-bar">
<nav>
<section id="entry-tags" href="#" class="left">
<label class="tag-label" for="tags" title="Tags"><span class="hidden">Tags</span></label>
<div class="tags">
{{#each tags}}
<span class="tag">{{name}}</span>
{{/each}}
</div>
<input type="hidden" class="tags-holder" id="tags-holder">
<input class="tag-input" id="tags" type="text" data-input-behaviour="tag" />
<ul class="suggestions overlay"></ul>
</section>
{{view "editor-tags" tagName="section" id="entry-tags" class="left"}}
<div class="right">
<section id="entry-controls">

View File

@ -0,0 +1,9 @@
<label class="tag-label" for="tags" title="Tags"><span class="hidden">Tags</span></label>
<div class="tags">
{{#each tags}}
<span class="tag" {{action 'tagClick' this target="view"}}>{{name}}</span>
{{/each}}
</div>
<input type="hidden" class="tags-holder" id="tags-holder">
{{input type="text" id="tags" class="tag-input" value=view.input}}
<ul class="suggestions overlay" {{bind-attr style=view.overlayStyle}}></ul>

View File

@ -0,0 +1,243 @@
var EditorTags = Ember.View.extend({
templateName: 'editor-tags',
didInsertElement: function () {
// Cache elements for later use
this.$input = this.$('#tags');
this.$suggestions = this.$('ul.suggestions');
},
willDestroyElement: function () {
// Release ownership of the object for proper GC
this.$input = null;
this.$suggestions = null;
},
keys: {
UP: 38,
DOWN: 40,
ESC: 27,
ENTER: 13,
BACKSPACE: 8
},
overlay: {
visible: false,
left: 0
},
overlayStyle: function () {
var styles = [];
styles.push(this.get('overlay.visible') ?
'display: block' :
'display: none'
);
styles.push(this.get('overlay.left') ?
'left: ' + this.get('overlay.left') + 'px' :
'left: 0'
);
return styles.join(';');
}.property('overlay.visible'),
showSuggestions: function (_searchTerm) {
var searchTerm = _searchTerm.toLowerCase(),
matchingTags = this.findMatchingTags(searchTerm),
// Limit the suggestions number
maxSuggestions = 5,
// Escape regex special characters
escapedTerm = searchTerm.replace(/[\-\/\\\^$*+?.()|\[\]{}]/g, '\\$&'),
regexTerm = escapedTerm.replace(/(\s+)/g, '(<[^>]+>)*$1(<[^>]+>)*'),
regexPattern = new RegExp('(' + regexTerm + ')', 'i'),
highlightedNameRegex;
this.set('overlay.left', this.$input.position().left);
this.$suggestions.html('');
window.b = matchingTags;
matchingTags = matchingTags.slice(0, maxSuggestions);
if (matchingTags.length > 0) {
this.set('overlay.visible', true);
}
highlightedNameRegex = /(<mark>[^<>]*)((<[^>]+>)+)([^<>]*<\/mark>)/;
matchingTags.forEach(function (matchingTag) {
var highlightedName,
suggestionHTML;
highlightedName = matchingTag.get('name').replace(regexPattern, function (match, p1) {
return '<mark>' + encodeURIComponent(p1) + '</mark>';
});
/*jslint regexp: true */ // - would like to remove this
highlightedName = highlightedName.replace(highlightedNameRegex, function (match, p1, p2, p3, p4) {
return encodeURIComponent(p1) + '</mark>' + encodeURIComponent(p2) + '<mark>' + encodeURIComponent(p4);
});
suggestionHTML = '<li data-tag-id="' + matchingTag.get('id') +
'" data-tag-name="' + encodeURIComponent(matchingTag.get('name')) +
'"><a href="#">' + highlightedName + '</a></li>';
this.$suggestions.append(suggestionHTML);
}, this);
},
findMatchingTags: function (searchTerm) {
var matchingTagModels,
self = this,
allTags = this.get('controller.store').all('tag');
if (allTags.get('length') === 0) {
return [];
}
searchTerm = searchTerm.toUpperCase();
matchingTagModels = allTags.filter(function (tag) {
var tagNameMatches,
hasAlreadyBeenAdded;
tagNameMatches = tag.get('name').toUpperCase().indexOf(searchTerm) !== -1;
hasAlreadyBeenAdded = self.hasTagBeenAdded(tag.name);
return tagNameMatches && !hasAlreadyBeenAdded;
});
return matchingTagModels;
},
keyDown: function (e) {
var lastTagIndex;
// Delete character tiggers on Keydown, so needed to check on that event rather than Keyup.
if (e.keyCode === this.keys.BACKSPACE && !this.get('input')) {
lastTagIndex = this.get('controller.model.tags').get('length') - 1;
if (lastTagIndex > -1) {
this.get('controller.model.tags').removeAt(lastTagIndex);
}
}
},
keyUp: function (e) {
var searchTerm = $.trim(this.get('input'));
if (e.keyCode === this.keys.UP) {
e.preventDefault();
if (this.get('overlay.visible')) {
if (this.$suggestions.children('.selected').length === 0) {
this.$suggestions.find('li:last-child').addClass('selected');
} else {
this.$suggestions.children('.selected').removeClass('selected').prev().addClass('selected');
}
}
} else if (e.keyCode === this.keys.DOWN) {
e.preventDefault();
if (this.get('overlay.visible')) {
if (this.$suggestions.children('.selected').length === 0) {
this.$suggestions.find('li:first-child').addClass('selected');
} else {
this.$suggestions.children('.selected').removeClass('selected').next().addClass('selected');
}
}
} else if (e.keyCode === this.keys.ESC) {
this.set('overlay.visible', false);
} else {
if (searchTerm) {
this.showSuggestions(searchTerm);
} else {
this.set('overlay.visible', false);
}
}
if (e.keyCode === this.keys.UP || e.keyCode === this.keys.DOWN) {
return false;
}
},
keyPress: function (e) {
var searchTerm = $.trim(this.get('input')),
tag,
$selectedSuggestion,
isComma = ','.localeCompare(String.fromCharCode(e.keyCode || e.charCode)) === 0,
hasAlreadyBeenAdded;
// use localeCompare in case of international keyboard layout
if ((e.keyCode === this.keys.ENTER || isComma) && searchTerm) {
// Submit tag using enter or comma key
e.preventDefault();
$selectedSuggestion = this.$suggestions.children('.selected');
if (this.get('overlay.visible') && $selectedSuggestion.length !== 0) {
tag = {
id: $selectedSuggestion.data('tag-id'),
name: decodeURIComponent($selectedSuggestion.data('tag-name'))
};
hasAlreadyBeenAdded = this.hasTagBeenAdded(tag.name);
if (!hasAlreadyBeenAdded) {
this.addTag(tag);
}
} else {
if (isComma) {
// Remove comma from string if comma is used to submit.
searchTerm = searchTerm.replace(/,/g, '');
}
hasAlreadyBeenAdded = this.hasTagBeenAdded(searchTerm);
if (!hasAlreadyBeenAdded) {
this.addTag({id: null, name: searchTerm});
}
}
this.set('input', '');
this.$input.focus();
this.set('overlay.visible', false);
}
},
addTag: function (tag) {
var allTags = this.get('controller.store').all('tag'),
newTag = allTags.findBy('name', tag.name);
if (!newTag) {
newTag = this.get('controller.store').createRecord('tag', tag);
}
this.get('controller.model.tags').addObject(newTag);
// Wait till Ember render's the new tag to access its dom element.
Ember.run.schedule('afterRender', this, function () {
this.$('.tag').last()[0].scrollIntoView(true);
window.scrollTo(0, 1);
this.set('input', '');
this.$input.focus();
this.set('overlay.visible', false);
});
},
hasTagBeenAdded: function (tagName) {
if (!tagName) {
return false;
}
return this.get('controller.model.tags').filter(function (usedTag) {
return usedTag.get('name').toUpperCase() === tagName.toUpperCase();
}).length > 0;
},
actions: {
tagClick: function (tag) {
this.get('controller.model.tags').removeObject(tag);
window.scrollTo(0, 1);
},
}
});
export default EditorTags;