/
Flot.scala
executable file
·262 lines (215 loc) · 7.22 KB
/
Flot.scala
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/*
* Copyright 2007-2011 WorldWide Conferencing, LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package net.liftmodules
package widgets
package flot
import xml.{NodeSeq, Unparsed}
import net.liftweb._
import common._
import util._
import Helpers._
import http.LiftRules
import http.js._
import jquery._
import JsCmds._
import JE._
import JqJE._
/**
* renders a flot graph using http://code.google.com/p/flot/ jQuery widget
* <br />
* See the sites/flotDemo webapp for examples.
*/
object Flot {
/**
* register the resources with lift (typically in boot)
*/
def init() {
import net.liftweb.http.ResourceServer
ResourceServer.allow({
case "flot" :: "jquery.flot.css" :: Nil => true
case "flot" :: "jquery.flot.js" :: Nil => true
case "flot" :: "jquery.flot.navigate.js" :: Nil => true
case "flot" :: "excanvas.js" :: Nil => true
})
}
def script(xml: NodeSeq): JsCmd =
(xml \ "script").map(x => JsRaw(x.text).cmd).foldLeft(Noop)(_ & _)
/**
* render a flot graph
* <p>
* a comet actor should use this version
*/
def render(idPlaceholder: String,
datas: List[FlotSerie],
options: FlotOptions,
script: JsCmd,
caps: FlotCapability*
): NodeSeq = {
renderHead() ++ Script(_renderJs(idPlaceholder, datas, options, script, caps :_*))
}
def renderHead(): NodeSeq = {
val ieExcanvasPackJs = Unparsed("<!--[if IE]><script language=\"javascript\" type=\"text/javascript\" src=\"" +
urlEncode(net.liftweb.http.S.contextPath) + "/" +
urlEncode(LiftRules.resourceServerPath) + "/flot/excanvas.js\"></script><![endif]-->")
<head>
{List("flot.js", "flot.navigate.js") map(name =>
<script type="text/javascript" src={"/" + LiftRules.resourceServerPath + "/flot/jquery." + name}/>
)}
{ieExcanvasPackJs}
<link rel="stylesheet" href={"/" + LiftRules.resourceServerPath + "/flot/jquery.flot.css"} type="text/css"/>
</head>
}
def renderCss (idPlaceholder : String) = {
JqId(idPlaceholder) ~> new JsExp with JsMember {
def toJsCmd = "addClass(\"flot_lww\")"
}
}
def renderCapability (fRender: FlotCapability => JsCmd, caps: FlotCapability *): JsCmd =
caps.foldLeft(Noop)((js, cap) => js & fRender(cap))
/*
* can be used to generate AJAX response
*/
def renderJs (
idPlaceholder : String,
datas : List [FlotSerie],
options : FlotOptions,
script: JsCmd,
caps : FlotCapability *): JsCmd =
datas match {
case Nil => renderFlotHide(idPlaceholder, caps: _*)
case _ => renderVars(idPlaceholder, datas, options) &
renderFlotShow(idPlaceholder, datas, options, script, caps :_*)
}
//
def renderFlotHide (idPlaceholder: String, caps: FlotCapability *): JsCmd =
JsHideId(idPlaceholder) &
renderCapability (c => c.renderHide(), caps :_*)
// part that belongs to jQuery "document ready" function
def renderFlotShow (
idPlaceholder: String,
datas: List [FlotSerie],
options: FlotOptions,
script: JsCmd,
caps: FlotCapability *): JsCmd = {
val main = FlotInfo (idPlaceholder, datas, options)
renderCss (idPlaceholder) &
JsShowId(idPlaceholder) &
renderCapability (c => c.renderShow (), caps :_*) &
JsRaw(
"var plot_" + idPlaceholder +
" = jQuery.plot(jQuery(" + ("#"+idPlaceholder).encJs +
"), datas_" + idPlaceholder +
", options_" + idPlaceholder + ")") &
renderCapability (c => c.render (main), caps :_*) &
script
}
// generate Javascript inside "document ready" event
def callPlotFunction(idPlaceholder: String): JsCmd = JsRaw("flot_plot_"+idPlaceholder+"();")
private def _renderJs (
idPlaceholder : String,
datas : List [FlotSerie],
options : FlotOptions,
script: JsCmd,
caps : FlotCapability*): JsCmd = {
renderVars (idPlaceholder, datas, options) &
Function("flot_plot_"+idPlaceholder, Nil, (datas match {
case Nil => renderFlotHide(idPlaceholder, caps : _*)
case _ => renderFlotShow(idPlaceholder, datas, options, script,
caps : _*)
})) &
OnLoad(callPlotFunction(idPlaceholder))
}
/**
* render a data value:<br/>
* [2, 10]
*/
def renderOneValue (one: (Double, Double)) : JsExp =
one match {
case (Double.NaN, _) => JsNull
case (_, Double.NaN) => JsNull
case (a, b) => JsArray(a, b)
}
/**
* render serie of data:<br/>
* [2, 10], [5, 12], [11, 2]
*/
def renderValues(values: List[(Double, Double)]): JsExp =
JsArray(values.map(renderOneValue) :_*)
/**
*
*/
def renderDataSerie(idPlaceholder: String)(data: (FlotSerie, Int)): JsCmd =
JsCrVar("data_"+idPlaceholder+"_"+(data._2 + 1), renderValues(data._1.data))
/*
* render all variables that can be modified via Javascript after first page load (for example using Ajax or comet)
*/
def renderVars (idPlaceholder : String,
datas: List[FlotSerie],
options: FlotOptions): JsCmd =
datas match {
case Nil => Noop
case _ =>
datas.zipWithIndex.map(renderDataSerie(idPlaceholder)).
reduceLeft(_ & _) &
JsCrVar("datas_"+idPlaceholder, renderSeries(datas, idPlaceholder)) &
JsCrVar("options_"+idPlaceholder, options.asJsObj)
}
/**
* render one serie:<br />
* <br />
* <code>
* (
* label: "<name_label>"
* lines: { show: true, fill: true }
* bars: { show: true }
* points: { show: true }
* data: data_[ph]_[x] where ph is the placeholder id and {x} serie's the id
* )
* </code>
*/
def renderOneSerie(data: FlotSerie, idPlaceholder: String, idSerie: Int): JsObj = {
val info: List[Box[(String, JsExp)]] =
List(data.label.map(v => ("label", v)),
data.lines.map(v => ("lines", v.asJsObj)),
data.points.map(v => ("points", v.asJsObj)),
data.bars.map(v => ("bars", v.asJsObj)),
data.color.map {
case Left(c) => ("color", c)
case Right(c) => ("color", c)
},
data.shadowSize.map(s => ("shadowSize", s)),
Full(("data", JsVar("data_"+idPlaceholder + "_" + idSerie))))
JsObj(info.flatten(_.toList) :_*)
}
/**
* render all series: <br />
* <br />
* ( <br />
* label: "<name_label_1>" <br />
* lines: ... <br />
* data: [[2, 10], [5, 12], [11, 2]] <br />
* ), <br />
* (<br />
* label: "<name_label2>"<br />
* data: [[2, 14], [6, 4], [11, 17]]<br />
* )<br />
*
*/
def renderSeries(datas: List[FlotSerie], idPlaceholder: String): JsArray =
JsArray(datas.zipWithIndex.map{
case (d, idx) => renderOneSerie(d, idPlaceholder, idx + 1)
} :_*)
}