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Vomnibar =
vomnibarUI: null # the dialog instance for this window
completers: {}
getCompleter: (name) ->
if (!(name of @completers))
@completers[name] = new BackgroundCompleter(name)
@completers[name]
#
# Activate the Vomnibox.
#
activateWithCompleter: (completerName, refreshInterval, initialQueryValue, selectFirstResult, forceNewTab) ->
completer = @getCompleter(completerName)
@vomnibarUI = new VomnibarUI() unless @vomnibarUI
completer.refresh()
@vomnibarUI.setInitialSelectionValue(if selectFirstResult then 0 else -1)
@vomnibarUI.setCompleter(completer)
@vomnibarUI.setRefreshInterval(refreshInterval)
@vomnibarUI.setForceNewTab(forceNewTab)
@vomnibarUI.show()
if (initialQueryValue)
@vomnibarUI.setQuery(initialQueryValue)
@vomnibarUI.update()
activate: -> @activateWithCompleter("omni", 100)
activateInNewTab: -> @activateWithCompleter("omni", 100, null, false, true)
activateTabSelection: -> @activateWithCompleter("tabs", 0, null, true)
activateBookmarks: -> @activateWithCompleter("bookmarks", 0, null, true)
activateBookmarksInNewTab: -> @activateWithCompleter("bookmarks", 0, null, true, true)
getUI: -> @vomnibarUI
class VomnibarUI
constructor: ->
@refreshInterval = 0
@initDom()
setQuery: (query) -> @input.value = query
setInitialSelectionValue: (initialSelectionValue) ->
@initialSelectionValue = initialSelectionValue
setCompleter: (completer) ->
@completer = completer
@reset()
setRefreshInterval: (refreshInterval) -> @refreshInterval = refreshInterval
setForceNewTab: (forceNewTab) -> @forceNewTab = forceNewTab
show: ->
@box.style.display = "block"
@input.focus()
@handlerId = handlerStack.push keydown: @onKeydown.bind @
hide: ->
@box.style.display = "none"
@completionList.style.display = "none"
@input.blur()
handlerStack.remove @handlerId
reset: ->
@input.value = ""
@updateTimer = null
@completions = []
@selection = @initialSelectionValue
@update(true)
updateSelection: ->
for i in [0...@completionList.children.length]
@completionList.children[i].className = (if i == @selection then "vomnibarSelected" else "")
#
# Returns the user's action ("up", "down", "enter", "dismiss" or null) based on their keypress.
# We support the arrow keys and other shortcuts for moving, so this method hides that complexity.
#
actionFromKeyEvent: (event) ->
key = KeyboardUtils.getKeyChar(event)
if (KeyboardUtils.isEscape(event))
return "dismiss"
else if (key == "up" ||
(event.shiftKey && event.keyCode == keyCodes.tab) ||
(event.ctrlKey && (key == "k" || key == "p")))
return "up"
else if (key == "down" ||
(event.keyCode == keyCodes.tab && !event.shiftKey) ||
(event.ctrlKey && (key == "j" || key == "n")))
return "down"
else if (event.keyCode == keyCodes.enter)
return "enter"
onKeydown: (event) ->
action = @actionFromKeyEvent(event)
return true unless action # pass through
openInNewTab = @forceNewTab || (event.shiftKey || KeyboardUtils.isPrimaryModifierKey(event))
if (action == "dismiss")
@hide()
else if (action == "up")
@selection -= 1
@selection = @completions.length - 1 if @selection < @initialSelectionValue
@updateSelection()
else if (action == "down")
@selection += 1
@selection = @initialSelectionValue if @selection == @completions.length
@updateSelection()
else if (action == "enter")
# If they type something and hit enter without selecting a completion from our list of suggestions,
# try to open their query as a URL directly. If it doesn't look like a URL, we will search using
# google.
if (@selection == -1)
query = @input.value.trim()
@hide()
chrome.extension.sendRequest({
handler: if openInNewTab then "openUrlInNewTab" else "openUrlInCurrentTab"
url: query })
else
@update true, =>
# Shift+Enter will open the result in a new tab instead of the current tab.
@completions[@selection].performAction(openInNewTab)
@hide()
# It seems like we have to manually supress the event here and still return true.
event.stopPropagation()
event.preventDefault()
true
updateCompletions: (callback) ->
query = @input.value.trim()
@completer.filter query, (completions) =>
@completions = completions
@populateUiWithCompletions(completions)
callback() if callback
populateUiWithCompletions: (completions) ->
# update completion list with the new data
@completionList.innerHTML = completions.map((completion) -> "<li>#{completion.html}</li>").join("")
@completionList.style.display = if completions.length > 0 then "block" else "none"
@selection = Math.min(Math.max(@initialSelectionValue, @selection), @completions.length - 1)
@updateSelection()
update: (updateSynchronously, callback) ->
if (updateSynchronously)
# cancel scheduled update
if (@updateTimer != null)
window.clearTimeout(@updateTimer)
@updateCompletions(callback)
else if (@updateTimer != null)
# an update is already scheduled, don't do anything
return
else
# always update asynchronously for better user experience and to take some load off the CPU
# (not every keystroke will cause a dedicated update)
@updateTimer = setTimeout(=>
@updateCompletions(callback)
@updateTimer = null
@refreshInterval)
initDom: ->
@box = Utils.createElementFromHtml(
"""
<div id="vomnibar" class="vimiumReset">
<div class="vimiumReset vomnibarSearchArea">
<input type="text" class="vimiumReset">
</div>
<ul class="vimiumReset"></ul>
</div>
""")
@box.style.display = "none"
document.body.appendChild(@box)
@input = document.querySelector("#vomnibar input")
@input.addEventListener "input", => @update()
@completionList = document.querySelector("#vomnibar ul")
@completionList.style.display = "none"
#
# Sends filter and refresh requests to a Vomnibox completer on the background page.
#
class BackgroundCompleter
# - name: The background page completer that you want to interface with. Either "omni" or "tabs". */
constructor: (@name) ->
@filterPort = chrome.extension.connect({ name: "filterCompleter" })
refresh: -> chrome.extension.sendRequest({ handler: "refreshCompleter", name: @name })
filter: (query, callback) ->
id = Utils.createUniqueId()
@filterPort.onMessage.addListener (msg) ->
return if (msg.id != id)
# The result objects coming from the background page will be of the form:
# { html: "", type: "", url: "" }
# type will be one of [tab, bookmark, history, domain].
results = msg.results.map (result) ->
functionToCall = if (result.type == "tab")
BackgroundCompleter.completionActions.switchToTab.curry(result.tabId)
else
BackgroundCompleter.completionActions.navigateToUrl.curry(result.url)
result.performAction = functionToCall
result
callback(results)
@filterPort.postMessage({ id: id, name: @name, query: query })
extend BackgroundCompleter,
#
# These are the actions we can perform when the user selects a result in the Vomnibox.
#
completionActions:
navigateToUrl: (url, openInNewTab) ->
# If the URL is a bookmarklet prefixed with javascript:, we shouldn't open that in a new tab.
if url.startsWith "javascript:"
eval decodeURIComponent(url["javascript:".length..])
else
chrome.extension.sendRequest(
handler: if openInNewTab then "openUrlInNewTab" else "openUrlInCurrentTab"
url: url,
selected: openInNewTab)
switchToTab: (tabId) -> chrome.extension.sendRequest({ handler: "selectSpecificTab", id: tabId })
root = exports ? window
root.Vomnibar = Vomnibar
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