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var fuzzyMode = (function() {
var fuzzyBox = null; // the dialog instance for this window
var completers = { };
function getCompleter(name) {
if (!(name in completers))
completers[name] = new BackgroundCompleter(name);
return completers[name];
}
/** Trigger the fuzzy mode dialog */
function start(name, refreshInterval) {
var completer = getCompleter(name);
if (!fuzzyBox)
fuzzyBox = new FuzzyBox(10);
completer.refresh();
fuzzyBox.setCompleter(completer);
fuzzyBox.setRefreshInterval(refreshInterval);
fuzzyBox.show();
}
/** User interface for fuzzy completion */
var FuzzyBox = function(maxResults) {
this.prompt = '>';
this.maxResults = maxResults;
this.refreshInterval = 0;
this.initDom();
}
FuzzyBox.prototype = {
setCompleter: function(completer) {
this.completer = completer;
this.reset();
},
setRefreshInterval: function(refreshInterval) {
this.refreshInterval = refreshInterval;
},
show: function() {
this.box.style.display = "block";
this.input.focus();
handlerStack.push({ keydown: this.onKeydown.bind(this) });
},
hide: function() {
this.box.style.display = "none";
this.completionList.style.display = "none";
this.input.blur();
handlerStack.pop();
},
reset: function() {
this.input.value = "";
this.updateTimer = null;
this.completions = [];
this.selection = 0;
this.update(true);
},
updateSelection: function() {
if (this.completions.length > 0)
this.selection = Math.min(this.selection, this.completions.length - 1);
for (var i = 0; i < this.completionList.children.length; ++i)
this.completionList.children[i].className = (i == this.selection) ? "selected" : "";
},
onKeydown: function(event) {
var self = this;
var keyChar = getKeyChar(event);
if (isEscape(event)) {
this.hide();
}
// move selection with Up/Down, Tab/Shift-Tab, Ctrl-k/Ctrl-j
else if (keyChar === "up" || (event.keyCode == keyCodes.tab && event.shiftKey)
|| (keyChar === "k" && event.ctrlKey)) {
if (this.selection > 0)
this.selection -= 1;
this.updateSelection();
}
else if (keyChar === "down" || (event.keyCode == keyCodes.tab && !event.shiftKey)
|| (keyChar === "j" && isPrimaryModifierKey(event))) {
if (this.selection < this.completions.length - 1)
this.selection += 1;
this.updateSelection();
}
// refresh with F5
else if (keyChar == "f5") {
this.completer.refresh();
this.update(true); // force immediate update
}
else if (event.keyCode == keyCodes.enter) {
this.update(true, function() {
// Shift+Enter will open the result in a new tab instead of the current tab.
var openInNewTab = (event.shiftKey || isPrimaryModifierKey(event));
self.completions[self.selection].action(openInNewTab);
self.hide();
});
}
else {
return true; // pass through
}
// it seems like we have to manually supress the event here and still return true...
event.stopPropagation();
event.preventDefault();
return true;
},
updateCompletions: function(callback) {
var self = this;
query = this.input.value.replace(/^\s*/, "");
this.completer.filter(query, this.maxResults, function(completions) {
self.completions = completions;
// update completion list with the new data
self.completionList.innerHTML = completions.map(function(completion) {
return "<li>" + completion.html + "</li>";
}).join('');
self.completionList.style.display = self.completions.length > 0 ? "block" : "none";
self.updateSelection();
if (callback) callback();
});
},
update: function(force, callback) {
force = force || false; // explicitely default to asynchronous updating
if (force) {
// cancel scheduled update
if (this.updateTimer !== null)
window.clearTimeout(this.updateTimer);
this.updateCompletions(callback);
} else if (this.updateTimer !== null) {
// an update is already scheduled, don't do anything
return;
} else {
var self = this;
// always update asynchronously for better user experience and to take some load off the CPU
// (not every keystroke will cause a dedicated update)
this.updateTimer = setTimeout(function() {
self.updateCompletions(callback);
self.updateTimer = null;
}, this.refreshInterval);
}
},
initDom: function() {
this.box = utils.createElementFromHtml(
'<div id="fuzzybox" class="vimiumReset">'+
'<div class="input">'+
'<span class="prompt">' + utils.escapeHtml(this.prompt) + '</span> '+
'<input type="text" class="query"></span></div>'+
'<ul></ul></div>');
this.box.style.display = 'none';
document.body.appendChild(this.box);
this.input = document.querySelector("#fuzzybox .query");
this.input.addEventListener("input", function() { this.update(); }.bind(this));
this.completionList = document.querySelector("#fuzzybox ul");
this.completionList.style.display = "none";
},
}
/*
* Sends filter and refresh requests to a Vomnibar completer on the background page.
*/
var BackgroundCompleter = Class.extend({
/*
* - name: The name of the background page completer that you want to interface with. One of [omni, tabs].
*/
init: function(name) {
this.name = name;
this.filterPort = chrome.extension.connect({ name: "filterCompleter" });
},
refresh: function() { chrome.extension.sendRequest({ handler: "refreshCompleter", name: this.name }); },
filter: function(query, maxResults, callback) {
var id = utils.createUniqueId();
this.filterPort.onMessage.addListener(function(msg) {
if (msg.id != id) return;
callback(msg.results.map(function(result) {
var action = result.action;
result.action = eval(action.func).apply(null, action.args);
return result;
}));
});
this.filterPort.postMessage({ id: id, name: this.name, query: query, maxResults: maxResults });
}
});
/** Creates an action that opens :url in the current tab by default or in a new tab as an alternative. */
function createActionOpenUrl(url) {
return function(openInNewTab) {
// If the URL is a bookmarklet prefixed with javascript:, we don't need to open that in a new tab.
if (url.indexOf("javascript:") == 0)
openInNewTab = false;
var selected = openInNewTab;
chrome.extension.sendRequest({
handler: openInNewTab ? "openUrlInNewTab" : "openUrlInCurrentTab",
url: url,
selected: openInNewTab
});
};
}
/** Returns an action that switches to the tab with the given :id. */
function createActionSwitchToTab(id) {
return function() { chrome.extension.sendRequest({ handler: "selectSpecificTab", id: id }); };
}
// public interface
return {
activateAll: function() { start("omni", false, 100); },
activateAllNewTab: function() { start("omni", true, 100); },
activateTabs: function() { start("tabs", false, 0); },
}
})();
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