vzlogger/frontend/javascripts/frontend.js
2010-11-01 13:10:20 +01:00

464 lines
12 KiB
JavaScript

/**
* Javascript functions for the frontend
*
* @author Florian Ziegler <fz@f10-home.de>
* @author Justin Otherguy <justin@justinotherguy.org>
* @author Steffen Vogel <info@steffenvogel.de>
* @copyright Copyright (c) 2010, The volkszaehler.org project
* @package default
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*/
/*
* This file is part of volkzaehler.org
*
* volkzaehler.org is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation, either version 3 of the License, or any later version.
*
* volkzaehler.org is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* volkszaehler.org. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Frontend related functions
*/
/**
* Initialize the WUI (Web User Interface)
*/
vz.wui.init = function() {
// start auto refresh timer
window.setInterval(this.refresh, 3000);
// initialize dropdown accordion
$('#accordion h3').click(function() {
$(this).next().toggle('fast');
return false;
}).next().hide();
// make buttons fancy
$('button, input[type=button]').button();
// tuple resolution
var tup = $('#tuples');
tup.val(vz.options.tuples).change(function() {
vz.options.tuples = $(this).val();
vz.entities.loadData();
});
$('#backendUrl')
.val(vz.options.backendUrl)
.change(function() {
vz.options.backendUrl = $(this).val();
});
$('#refresh')
.attr('checked', vz.options.refresh)
.change(function() {
vz.options.refresh = $(this).val();
});
// plot rendering
$('#rendering_lines')
.attr('checked', vz.options.plot.series.lines.show)
.change(function() {
vz.options.plot.series.lines.show = $(this).attr('checked');
vz.options.plot.series.points.show = !$(this).attr('checked');
vz.drawPlot();
});
$('#rendering_points')
.attr('checked', vz.options.plot.series.points.show)
.change(function() {
vz.options.plot.series.lines.show = !$(this).attr('checked');
vz.options.plot.series.points.show = $(this).attr('checked');
vz.drawPlot();
});
};
/**
* Initialize dialogs
*/
vz.wui.dialogs.init = function() {
// initialize dialogs
$('#addUUID').dialog({
autoOpen: false,
title: 'UUID hinzufügen',
width: 450,
resizable: false
});
$('#newEntity').dialog({
autoOpen: false,
title: 'Entity erstellen',
width: 400
});
// open uuid dialog
$('button[name=addUUID]').click(function() {
$('#addUUID').dialog('open');
});
// open entity dialog
$('button[name=newEntity]').click(function() {
$('#newEntity').dialog('open');
});
// add UUID
$('#addUUID input[type=button]').click(function() {
try {
vz.uuids.add($('#addUUID input[type=text]').val());
$('#addUUID input[type=text]').val('');
$('#addUUID').dialog('close');
vz.entities.loadDetails();
}
catch (exception) {
vz.exceptionDialog(exception);
}
});
};
/**
* Bind events to handle plot zooming & panning
*/
vz.wui.initEvents = function() {
// bind plot actions
$('#controls input[type=image]').button().click(vz.wui.handleControls);
$('#controls').buttonset();
$('#plot')
.bind("plotselected", function (event, ranges) {
vz.options.plot.xaxis.min = ranges.xaxis.from;
vz.options.plot.xaxis.max = ranges.xaxis.to;
vz.options.plot.yaxis.min = 0;
vz.options.plot.yaxis.max = null; // autoscaling
vz.entities.loadData();
})
/*.bind('plotpan', function (event, plot) {
var axes = plot.getAxes();
vz.options.plot.xaxis.min = axes.xaxis.min;
vz.options.plot.xaxis.max = axes.xaxis.max;
vz.options.plot.yaxis.min = axes.yaxis.min;
vz.options.plot.yaxis.max = axes.yaxis.max;
})*/
/*.bind('mouseup', function(event) {
vz.entities.loadData();
})*/
.bind('plotzoom', function (event, plot) {
var axes = plot.getAxes();
vz.options.plot.xaxis.min = axes.xaxis.min;
vz.options.plot.xaxis.max = axes.xaxis.max;
vz.options.plot.yaxis.min = axes.yaxis.min;
vz.options.plot.yaxis.max = axes.yaxis.max;
vz.entities.loadData();
});
};
/**
* Refresh plot with new data
*/
vz.wui.refresh = function() {
if (vz.options.refresh) {
var delta = vz.options.plot.xaxis.max - vz.options.plot.xaxis.min;
vz.options.plot.xaxis.max = new Date().getTime(); // move plot
vz.options.plot.xaxis.min = vz.options.plot.xaxis.max - delta; // move plot
vz.entities.loadData();
}
};
/**
* Move & zoom in the plotting area
*/
vz.wui.handleControls = function () {
var delta = vz.options.plot.xaxis.max - vz.options.plot.xaxis.min;
var middle = vz.options.plot.xaxis.min + delta/2;
switch(this.value) {
case 'move_last':
vz.options.plot.xaxis.max = new Date().getTime();
vz.options.plot.xaxis.min = new Date().getTime() - delta;
break;
case 'move_back':
vz.options.plot.xaxis.min -= delta;
vz.options.plot.xaxis.max -= delta;
break;
case 'move_forward':
vz.options.plot.xaxis.min += delta;
vz.options.plot.xaxis.max += delta;
break;
case 'zoom_reset':
vz.options.plot.xaxis.min = middle - vz.options.defaultInterval/2;
vz.options.plot.xaxis.max = middle + vz.options.defaultInterval/2;
break;
case 'zoom_in':
vz.options.plot.xaxis.min += delta/4;
vz.options.plot.xaxis.max -= delta/4;
break;
case 'zoom_out':
vz.options.plot.xaxis.min -= delta;
vz.options.plot.xaxis.max += delta;
break;
}
// update delta after zoom
delta = vz.options.plot.xaxis.max - vz.options.plot.xaxis.min;
// we dont want to zoom/pan into the future
if (vz.options.plot.xaxis.max + delta > new Date().getTime()) {
vz.options.plot.xaxis.max = new Date().getTime();
vz.options.plot.xaxis.min = new Date().getTime() - delta;
}
vz.entities.loadData();
};
/**
* Get all entity information from backend
*/
vz.entities.loadDetails = function() {
this.clear();
vz.uuids.each(function(index, value) {
vz.load('entity', value, {}, waitAsync(function(json) {
vz.entities.push(new Entity(json.entity));
}, vz.entities.show, 'information'));
});
};
/**
* Create nested entity list
* @param data
*/
vz.entities.show = function() {
$('#entities tbody').empty();
var i = 0;
vz.entities.each(function(entity, parent) {
entity.color = vz.options.plot.colors[i++ % vz.options.plot.colors.length];
entity.active = (entity.active) ? entity.active : true;
var row = $('<tr>')
.addClass((parent) ? 'child-of-entity-' + parent.uuid : '')
.attr('id', 'entity-' + entity.uuid)
.append($('<td>')
.addClass('visibility')
.css('background-color', entity.color)
.append($('<input>')
.attr('type', 'checkbox')
.attr('checked', entity.active)
.bind('change', entity, function(event) {
var state = $(this).attr('checked');
event.data.active = state;
if (entity.type == 'group') {
entity.children.each(function(entity) {
$('#entity-' + entity.uuid + ' input[type=checkbox]').attr('checked', state);
entity.active = state;
});
}
vz.drawPlot();
})
)
)
.append($('<td>').addClass('expander'))
.append($('<td>')
.append($('<span>')
.text(entity.title)
.addClass('indicator')
.addClass((entity.type == 'group') ? 'group' : 'channel')
)
)
.append($('<td>').text(entity.type)) // channel type
.append($('<td>').addClass('min')) // min
.append($('<td>').addClass('max')) // max
.append($('<td>').addClass('average')) // avg
.append($('<td>') // operations
.addClass('ops')
.append($('<input>')
.attr('type', 'image')
.attr('src', 'images/information.png')
.attr('alt', 'details')
.bind('click', entity, function(event) { event.data.showDetails(); })
)
);
if (parent == null) {
$('td.ops', row).prepend($('<input>')
.attr('type', 'image')
.attr('src', 'images/delete.png')
.attr('alt', 'delete')
.bind('click', entity, function(event) {
vz.uuids.remove(event.data.uuid);
vz.entities.loadDetails();
})
);
}
$('#entities tbody').append(row);
});
// http://ludo.cubicphuse.nl/jquery-plugins/treeTable/doc/index.html
$('#entities table').treeTable({
treeColumn: 2,
clickableNodeNames: true
});
// load data and show plot
vz.entities.loadData();
};
/**
* Overwritten each iterator for entity array
*/
vz.entities.each = function(cb) {
for (var i = 0; i < this.length; i++) {
this[i].each(cb);
}
}
/**
* Load json data from the backend
*/
vz.entities.loadData = function() {
//$('#plot').html('<div class="plotcenter"><img src="images/loading.gif" alt="loading..." /><p>Loading...</p></div>');
this.each(function(entity, parent) {
if (entity.active && entity.type != 'group') { // TODO add group data aggregation
vz.load('data', entity.uuid,
{
from: Math.floor(vz.options.plot.xaxis.min),
to: Math.ceil(vz.options.plot.xaxis.max),
tuples: vz.options.tuples
},
waitAsync(function(json) {
entity.data = json.data;
// update entity table
// TODO add units
if (entity.data.min && entity.data.max && entity.data.min) {
$('#entity-' + entity.uuid + ' .min')
.text(entity.data.min.value)
.attr('title', $.plot.formatDate(new Date(entity.data.min.timestamp), vz.options.plot.xaxis.timeformat, vz.options.plot.xaxis.monthNames));
$('#entity-' + entity.uuid + ' .max')
.text(entity.data.max.value)
.attr('title', $.plot.formatDate(new Date(entity.data.max.timestamp), vz.options.plot.xaxis.timeformat, vz.options.plot.xaxis.monthNames));
$('#entity-' + entity.uuid + ' .average').text(entity.data.average);
}
}, vz.drawPlot, 'data')
);
}
});
};
/**
* Draws plot to container
*/
vz.drawPlot = function () {
var data = new Array;
vz.entities.each(function(entity, parent) {
if (entity.active && entity.data && entity.data.count > 0) {
data.push({
data: entity.data.tuples,
color: entity.color
});
}
});
if (data.length > 0) {
vz.plot = $.plot($('#plot'), data, vz.options.plot);
}
else {
$('#plot').html('<div class="plotcenter"><img src="images/empty.png" alt="no data..." /><p>Nothing to plot...</p></div>');
}
};
/**
* Universal helper for backend ajax requests with error handling
*/
vz.load = function(context, identifier, data, success) {
$.getUrlVars().each(function (key, value) { // TODO parse only once
data[key] = value;
});
$.ajax({
success: success,
url: vz.options.backendUrl + '/' + context + '/' + identifier + '.json',
dataType: 'json',
data: data,
error: function(xhr) {
json = JSON.parse(xhr.responseText);
vz.errorDialog(xhr.statusText, json.exception.message, xhr.status); // TODO error vs. exception
}
});
};
/**
* Load definitions from backend
*/
vz.definitions.load = function() {
$.ajax({
cache: true,
dataType: 'json',
url: vz.options.backendUrl + '/capabilities/definition/entity.json',
success: function(json) {
vz.definitions.entity = json.definition.entity
}
});
$.ajax({
cache: true,
dataType: 'json',
url: vz.options.backendUrl + '/capabilities/definition/property.json',
success: function(json) {
vz.definitions.property = json.definition.property
}
});
};
vz.definitions.get = function(section, iname) {
for (var i in vz.definitions[section]) {
alert(vz.definitions[section][i].name);
if (vz.definitions[section][i].name == iname) {
return definition;
}
}
}
/*
* Error & Exception handling
*/
vz.wui.dialogs.error = function(error, description, code) {
if (typeof code != undefined) {
error = code + ': ' + error;
}
$('<div>')
.append($('<span>').text(description))
.dialog({
title: error,
width: 450,
dialogClass: 'ui-error',
resizable: false,
modal: true,
buttons: {
Ok: function() {
$( this ).dialog( "close" );
}
}
});
};
vz.wui.dialogs.exception = function(exception) {
this.error(exception.type, exception.message, exception.code);
};