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devdocs/assets/javascripts/views/search/search_scope.coffee

85 lines
1.9 KiB

class app.views.SearchScope extends app.View
SEARCH_PARAM = app.config.search_param
@elements:
input: '._search-input'
tag: '._search-tag'
@events:
keydown: 'onKeydown'
@shortcuts:
escape: 'reset'
constructor: (@el) -> super
init: ->
@placeholder = @input.getAttribute 'placeholder'
@searcher = new app.SynchronousSearcher
fuzzy_min_length: 2
max_results: 1
@searcher.on 'results', @onResults
return
getScope: ->
@doc or app
search: (value) ->
unless @doc
@searcher.find app.docs.all(), 'slug', value
return
searchUrl: ->
if value = @extractHashValue()
@search value
return
onResults: (results) =>
if results.length
@selectDoc results[0]
return
selectDoc: (doc) ->
@doc = doc
@tag.textContent = doc.name
@tag.style.display = 'block'
@input.removeAttribute 'placeholder'
@input.value = @input.value[@input.selectionStart..]
@input.style.paddingLeft = @tag.offsetWidth + 6 + 'px'
$.trigger @input, 'input'
reset: =>
@doc = null
@tag.textContent = ''
@tag.style.display = 'none'
@input.setAttribute 'placeholder', @placeholder
@input.style.paddingLeft = ''
onKeydown: (event) =>
return if event.ctrlKey or event.metaKey or event.altKey or event.shiftKey
if event.which is 8 # backspace
if @doc and not @input.value
$.stopEvent(event)
@reset()
else if event.which is 9 or # tab
event.which is 32 and (app.isMobile() or $.isTouchScreen()) # space
$.stopEvent(event)
@search @input.value[0...@input.selectionStart]
return
extractHashValue: ->
if value = @getHashValue()
newHash = $.urlDecode(location.hash).replace "##{SEARCH_PARAM}=#{value} ", "##{SEARCH_PARAM}="
app.router.replaceHash(newHash)
value
getHashValue: ->
try (new RegExp "^##{SEARCH_PARAM}=(.+?) .").exec($.urlDecode location.hash)?[1] catch