/**
* Copyright (c) 2008-2011 The Open Planning Project
*
* Published under the GPL license.
* See https://github.com/opengeo/gxp/raw/master/license.txt for the full text
* of the license.
*/
Ext.namespace("gxp");
gxp.util = {
/** private: property[_uniqueNames]
* ``Object`` cache that keeps track of unique names
*/
_uniqueNames: {},
/** api: function[getOGCExceptionText]
* :arg report: ``Object`` The exception report object
* :return: ``String`` A single string representing the possible stack of
* exception messages.
*
* Get a string message from an OGC exception report object.
*/
getOGCExceptionText: function(report) {
var msg;
if (report && report.exceptions) {
msg = [];
Ext.each(report.exceptions, function(obj) {
Ext.each(obj.texts, function(text) {
msg.push(text);
});
});
msg = msg.join("\n");
} else {
msg = "Unknown error (no exception report).";
}
return msg;
},
/** api: function[dispatch]
* :arg functions: ``Array(Function)`` List of functions to be called.
* All functions will be called with two arguments - a callback to
* call when the sequence is done and a storage object.
* :arg complete: ``Function`` A function that will be called when all
* other functions report that they are done. The final callback
* will be called with the storage object passed to all other
* functions.
* :arg scope: ``Object`` Optional object to be set as the scope of all
* functions called.
*
* Allows multiple asynchronous sequences to be called in parallel. A
* final callback is called when all other sequences report that they
* are done.
*/
dispatch: function(functions, complete, scope) {
complete = complete || Ext.emptyFn;
scope = scope || this;
var requests = functions.length;
var responses = 0;
var storage = {};
function respond() {
++responses;
if(responses === requests) {
complete.call(scope, storage);
}
}
function trigger(index) {
window.setTimeout(function() {
functions[index].apply(scope, [respond, storage]);
});
}
for(var i=0; i");
a.style.display = "none";
document.body.appendChild(a);
a.href = a.href;
document.body.removeChild(a);
} else {
a = document.createElement("a");
a.href = url;
}
return a.href;
},
/** api: function[throttle]
* :arg func: ``Function``
* :arg interval: ``Integer``
* :arg scope: ``Object``
* :return: ``Function``
*
* Returns a function, that, when invoked, will only be triggered at
* most once during a given window of time.
*/
throttle: (function() {
// taken from ExtJS 4.1
// TODO remove when we upgrade to ExtJS 4.1 or higher.
/**
* Creates a throttled version of the passed function which, when called repeatedly and
* rapidly, invokes the passed function only after a certain interval has elapsed since the
* previous invocation.
*
* This is useful for wrapping functions which may be called repeatedly, such as
* a handler of a mouse move event when the processing is expensive.
*
* @param {Function} fn The function to execute at a regular time interval.
* @param {Number} interval The interval **in milliseconds** on which the passed function is executed.
* @param {Object} scope (optional) The scope (`this` reference) in which
* the passed function is executed. If omitted, defaults to the scope specified by the caller.
* @returns {Function} A function which invokes the passed function at the specified interval.
*/
var createThrottled = function(fn, interval, scope) {
var lastCallTime, elapsed, lastArgs, timer, execute = function() {
fn.apply(scope || this, lastArgs);
lastCallTime = new Date().getTime();
};
return function() {
elapsed = new Date().getTime() - lastCallTime;
lastArgs = arguments;
clearTimeout(timer);
if (!lastCallTime || (elapsed >= interval)) {
execute();
} else {
timer = setTimeout(execute, interval - elapsed);
}
};
};
return function(func, interval, scope) {
return createThrottled(func, interval, scope);
};
})(),
/** api: function[md5]
* :arg data: ``String``
* :returns: ``String`` md5 hash
*
* Encrypts the specified string using MD5.
*/
md5: (function() {
/* md5.js - MD5 Message-Digest
* Copyright (C) 1999,2002 Masanao Izumo
* Version: 2.0.0
* LastModified: May 13 2002
*
* This program is free software. You can redistribute it and/or modify
* it without any warranty. This library calculates the MD5 based on RFC1321.
* See RFC1321 for more information and algorism.
*/
/* Interface:
* md5_128bits = MD5_hash(data);
* md5_hexstr = MD5_hexhash(data);
*/
/* ChangeLog
* 2002/05/13: Version 2.0.0 released
* NOTICE: API is changed.
* 2002/04/15: Bug fix about MD5 length.
*/
// md5_T[i] = parseInt(Math.abs(Math.sin(i)) * 4294967296.0);
var MD5_T = [
0x00000000, 0xd76aa478, 0xe8c7b756, 0x242070db,
0xc1bdceee, 0xf57c0faf, 0x4787c62a, 0xa8304613,
0xfd469501, 0x698098d8, 0x8b44f7af, 0xffff5bb1,
0x895cd7be, 0x6b901122, 0xfd987193, 0xa679438e,
0x49b40821, 0xf61e2562, 0xc040b340, 0x265e5a51,
0xe9b6c7aa, 0xd62f105d, 0x02441453, 0xd8a1e681,
0xe7d3fbc8, 0x21e1cde6, 0xc33707d6, 0xf4d50d87,
0x455a14ed, 0xa9e3e905, 0xfcefa3f8, 0x676f02d9,
0x8d2a4c8a, 0xfffa3942, 0x8771f681, 0x6d9d6122,
0xfde5380c, 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60,
0xbebfbc70, 0x289b7ec6, 0xeaa127fa, 0xd4ef3085,
0x04881d05, 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8,
0xc4ac5665, 0xf4292244, 0x432aff97, 0xab9423a7,
0xfc93a039, 0x655b59c3, 0x8f0ccc92, 0xffeff47d,
0x85845dd1, 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314,
0x4e0811a1, 0xf7537e82, 0xbd3af235, 0x2ad7d2bb,
0xeb86d391
];
var MD5_round1 = [
[ 0, 7, 1], [ 1,12, 2],
[ 2,17, 3], [ 3,22, 4],
[ 4, 7, 5], [ 5,12, 6],
[ 6,17, 7], [ 7,22, 8],
[ 8, 7, 9], [ 9,12,10],
[10,17,11], [11,22,12],
[12, 7,13], [13,12,14],
[14,17,15], [15,22,16]
];
var MD5_round2 = [
[ 1, 5,17], [ 6, 9,18],
[11,14,19], [ 0,20,20],
[ 5, 5,21], [10, 9,22],
[15,14,23], [ 4,20,24],
[ 9, 5,25], [14, 9,26],
[ 3,14,27], [ 8,20,28],
[13, 5,29], [ 2, 9,30],
[ 7,14,31], [12,20,32]
];
var MD5_round3 = [
[ 5, 4,33], [ 8,11,34],
[11,16,35], [14,23,36],
[ 1, 4,37], [ 4,11,38],
[ 7,16,39], [10,23,40],
[13, 4,41], [ 0,11,42],
[ 3,16,43], [ 6,23,44],
[ 9, 4,45], [12,11,46],
[15,16,47], [ 2,23,48]
];
var MD5_round4 = [
[ 0, 6,49], [ 7,10,50],
[14,15,51], [ 5,21,52],
[12, 6,53], [ 3,10,54],
[10,15,55], [ 1,21,56],
[ 8, 6,57], [15,10,58],
[ 6,15,59], [13,21,60],
[ 4, 6,61], [11,10,62],
[ 2,15,63], [ 9,21,64]
];
function MD5_F(x, y, z) { return (x & y) | (~x & z); }
function MD5_G(x, y, z) { return (x & z) | (y & ~z); }
function MD5_H(x, y, z) { return x ^ y ^ z; }
function MD5_I(x, y, z) { return y ^ (x | ~z); }
var MD5_round = [
[MD5_F, MD5_round1],
[MD5_G, MD5_round2],
[MD5_H, MD5_round3],
[MD5_I, MD5_round4]
];
function MD5_pack(n32) {
return String.fromCharCode(n32 & 0xff) +
String.fromCharCode((n32 >>> 8) & 0xff) +
String.fromCharCode((n32 >>> 16) & 0xff) +
String.fromCharCode((n32 >>> 24) & 0xff);
}
function MD5_unpack(s4) {
return s4.charCodeAt(0) |
(s4.charCodeAt(1) << 8) |
(s4.charCodeAt(2) << 16) |
(s4.charCodeAt(3) << 24);
}
function MD5_number(n) {
while (n < 0) {
n += 4294967296;
}
while (n > 4294967295) {
n -= 4294967296;
}
return n;
}
function MD5_apply_round(x, s, f, abcd, r) {
var a, b, c, d;
var kk, ss, ii;
var t, u;
a = abcd[0];
b = abcd[1];
c = abcd[2];
d = abcd[3];
kk = r[0];
ss = r[1];
ii = r[2];
u = f(s[b], s[c], s[d]);
t = s[a] + u + x[kk] + MD5_T[ii];
t = MD5_number(t);
t = ((t<>>(32-ss)));
t += s[b];
s[a] = MD5_number(t);
}
function MD5_hash(data) {
var abcd, x, state, s;
var len, index, padLen, f, r;
var i, j, k;
var tmp;
state = [0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476];
len = data.length;
index = len & 0x3f;
padLen = (index < 56) ? (56 - index) : (120 - index);
if(padLen > 0) {
data += "\x80";
for(i = 0; i < padLen - 1; i++) {
data += "\x00";
}
}
data += MD5_pack(len * 8);
data += MD5_pack(0);
len += padLen + 8;
abcd = [0, 1, 2, 3];
x = [16];
s = [4];
for(k = 0; k < len; k += 64) {
for(i = 0, j = k; i < 16; i++, j += 4) {
x[i] = data.charCodeAt(j) |
(data.charCodeAt(j + 1) << 8) |
(data.charCodeAt(j + 2) << 16) |
(data.charCodeAt(j + 3) << 24);
}
for(i = 0; i < 4; i++) {
s[i] = state[i];
}
for(i = 0; i < 4; i++) {
f = MD5_round[i][0];
r = MD5_round[i][1];
for(j = 0; j < 16; j++) {
MD5_apply_round(x, s, f, abcd, r[j]);
tmp = abcd[0];
abcd[0] = abcd[3];
abcd[3] = abcd[2];
abcd[2] = abcd[1];
abcd[1] = tmp;
}
}
for(i = 0; i < 4; i++) {
state[i] += s[i];
state[i] = MD5_number(state[i]);
}
}
return MD5_pack(state[0]) +
MD5_pack(state[1]) +
MD5_pack(state[2]) +
MD5_pack(state[3]);
}
function MD5_hexhash(data) {
var i, out, c;
var bit128;
bit128 = MD5_hash(data);
out = "";
for(i = 0; i < 16; i++) {
c = bit128.charCodeAt(i);
out += "0123456789abcdef".charAt((c>>4) & 0xf);
out += "0123456789abcdef".charAt(c & 0xf);
}
return out;
}
return function(data) {
return MD5_hexhash(data);
};
})()
};