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Limit the size of the page cache

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This commit is contained in:
Rouslan Placella 2012-08-10 12:03:31 +02:00
parent 9fd82511c8
commit 88d52b8746
1 changed files with 14 additions and 6 deletions
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20
js/ajax.js
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@ -334,6 +334,7 @@ var AJAX = {
};
AJAX.cache = {
MAX: 6,
/**
* An array used to prime the cache with data about the initially
* loaded page. This is set in the footer, and then loaded
@ -343,8 +344,16 @@ AJAX.cache = {
pages: [],
current: 0,
add: function (hash, scripts, menu) {
if (this.pages.length > AJAX.cache.MAX) {
// Trim the cache, to the maximum number of allowed entries
// This way we will have a cached menu for every page
for (var i=0; i<this.pages.length-this.MAX; i++) {
delete this.pages[i];
}
}
while (this.current < this.pages.length) {
// trim the cache if we went back in the history
// and are now going forward again
this.pages.pop();
}
if (typeof this.pages[this.current - 1] !== 'undefined'
@ -363,11 +372,12 @@ AJAX.cache = {
});
setURLHash(this.current, hash);
this.current++;
//console.log(this.pages)
},
goto: function (index) {
if (index > this.pages.length) {
alert('The requested page was not found in the history');
if (typeof this.pages[index] === 'undefined') {
PMA_ajaxShowMessage(
'The requested page was not found in the history' // FIXME: l10n
);
} else {
this.update();
AJAX.active = true;
@ -400,13 +410,11 @@ AJAX.cache = {
},
data: {},
add: function (hash, content) {
//console.log(this.size(this.data))
if (this.size(this.data) > 6) {
if (this.size(this.data) > AJAX.cache.MAX) {
// when the cache grows, we remove the oldest entry
var oldest, key, init = 0;
for (var i in this.data) {
if (this.data[i]) {
// console.log(this.data[i].timestamp, oldest)
if (! init || this.data[i].timestamp.getTime() < oldest.getTime()) {
oldest = this.data[i].timestamp;
key = i;