From e44a7e37b6c7b5961adaffc62b9042b8d442938e Mon Sep 17 00:00:00 2001 From: mensonge Date: Thu, 13 Nov 2008 09:49:11 +0000 Subject: New feature: basic Ajax suggestion for tags and implementation of Dojo toolkit git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f --- includes/js/dojo/data/util/filter.js | 69 ++++++++++++++++++++++++ includes/js/dojo/data/util/simpleFetch.js | 90 +++++++++++++++++++++++++++++++ includes/js/dojo/data/util/sorter.js | 81 ++++++++++++++++++++++++++++ 3 files changed, 240 insertions(+) create mode 100644 includes/js/dojo/data/util/filter.js create mode 100644 includes/js/dojo/data/util/simpleFetch.js create mode 100644 includes/js/dojo/data/util/sorter.js (limited to 'includes/js/dojo/data/util') diff --git a/includes/js/dojo/data/util/filter.js b/includes/js/dojo/data/util/filter.js new file mode 100644 index 0000000..125d264 --- /dev/null +++ b/includes/js/dojo/data/util/filter.js @@ -0,0 +1,69 @@ +if(!dojo._hasResource["dojo.data.util.filter"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. +dojo._hasResource["dojo.data.util.filter"] = true; +dojo.provide("dojo.data.util.filter"); + +dojo.data.util.filter.patternToRegExp = function(/*String*/pattern, /*boolean?*/ ignoreCase){ + // summary: + // Helper function to convert a simple pattern to a regular expression for matching. + // description: + // Returns a regular expression object that conforms to the defined conversion rules. + // For example: + // ca* -> /^ca.*$/ + // *ca* -> /^.*ca.*$/ + // *c\*a* -> /^.*c\*a.*$/ + // *c\*a?* -> /^.*c\*a..*$/ + // and so on. + // + // pattern: string + // A simple matching pattern to convert that follows basic rules: + // * Means match anything, so ca* means match anything starting with ca + // ? Means match single character. So, b?b will match to bob and bab, and so on. + // \ is an escape character. So for example, \* means do not treat * as a match, but literal character *. + // To use a \ as a character in the string, it must be escaped. So in the pattern it should be + // represented by \\ to be treated as an ordinary \ character instead of an escape. + // + // ignoreCase: + // An optional flag to indicate if the pattern matching should be treated as case-sensitive or not when comparing + // By default, it is assumed case sensitive. + + var rxp = "^"; + var c = null; + for(var i = 0; i < pattern.length; i++){ + c = pattern.charAt(i); + switch (c) { + case '\\': + rxp += c; + i++; + rxp += pattern.charAt(i); + break; + case '*': + rxp += ".*"; break; + case '?': + rxp += "."; break; + case '$': + case '^': + case '/': + case '+': + case '.': + case '|': + case '(': + case ')': + case '{': + case '}': + case '[': + case ']': + rxp += "\\"; //fallthrough + default: + rxp += c; + } + } + rxp += "$"; + if(ignoreCase){ + return new RegExp(rxp,"i"); //RegExp + }else{ + return new RegExp(rxp); //RegExp + } + +}; + +} diff --git a/includes/js/dojo/data/util/simpleFetch.js b/includes/js/dojo/data/util/simpleFetch.js new file mode 100644 index 0000000..f54d763 --- /dev/null +++ b/includes/js/dojo/data/util/simpleFetch.js @@ -0,0 +1,90 @@ +if(!dojo._hasResource["dojo.data.util.simpleFetch"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. +dojo._hasResource["dojo.data.util.simpleFetch"] = true; +dojo.provide("dojo.data.util.simpleFetch"); +dojo.require("dojo.data.util.sorter"); + +dojo.data.util.simpleFetch.fetch = function(/* Object? */ request){ + // summary: + // The simpleFetch mixin is designed to serve as a set of function(s) that can + // be mixed into other datastore implementations to accelerate their development. + // The simpleFetch mixin should work well for any datastore that can respond to a _fetchItems() + // call by returning an array of all the found items that matched the query. The simpleFetch mixin + // is not designed to work for datastores that respond to a fetch() call by incrementally + // loading items, or sequentially loading partial batches of the result + // set. For datastores that mixin simpleFetch, simpleFetch + // implements a fetch method that automatically handles eight of the fetch() + // arguments -- onBegin, onItem, onComplete, onError, start, count, sort and scope + // The class mixing in simpleFetch should not implement fetch(), + // but should instead implement a _fetchItems() method. The _fetchItems() + // method takes three arguments, the keywordArgs object that was passed + // to fetch(), a callback function to be called when the result array is + // available, and an error callback to be called if something goes wrong. + // The _fetchItems() method should ignore any keywordArgs parameters for + // start, count, onBegin, onItem, onComplete, onError, sort, and scope. + // The _fetchItems() method needs to correctly handle any other keywordArgs + // parameters, including the query parameter and any optional parameters + // (such as includeChildren). The _fetchItems() method should create an array of + // result items and pass it to the fetchHandler along with the original request object + // -- or, the _fetchItems() method may, if it wants to, create an new request object + // with other specifics about the request that are specific to the datastore and pass + // that as the request object to the handler. + // + // For more information on this specific function, see dojo.data.api.Read.fetch() + request = request || {}; + if(!request.store){ + request.store = this; + } + var self = this; + + var _errorHandler = function(errorData, requestObject){ + if(requestObject.onError){ + var scope = requestObject.scope || dojo.global; + requestObject.onError.call(scope, errorData, requestObject); + } + }; + + var _fetchHandler = function(items, requestObject){ + var oldAbortFunction = requestObject.abort || null; + var aborted = false; + + var startIndex = requestObject.start?requestObject.start:0; + var endIndex = requestObject.count?(startIndex + requestObject.count):items.length; + + requestObject.abort = function(){ + aborted = true; + if(oldAbortFunction){ + oldAbortFunction.call(requestObject); + } + }; + + var scope = requestObject.scope || dojo.global; + if(!requestObject.store){ + requestObject.store = self; + } + if(requestObject.onBegin){ + requestObject.onBegin.call(scope, items.length, requestObject); + } + if(requestObject.sort){ + items.sort(dojo.data.util.sorter.createSortFunction(requestObject.sort, self)); + } + if(requestObject.onItem){ + for(var i = startIndex; (i < items.length) && (i < endIndex); ++i){ + var item = items[i]; + if(!aborted){ + requestObject.onItem.call(scope, item, requestObject); + } + } + } + if(requestObject.onComplete && !aborted){ + var subset = null; + if (!requestObject.onItem) { + subset = items.slice(startIndex, endIndex); + } + requestObject.onComplete.call(scope, subset, requestObject); + } + }; + this._fetchItems(request, _fetchHandler, _errorHandler); + return request; // Object +}; + +} diff --git a/includes/js/dojo/data/util/sorter.js b/includes/js/dojo/data/util/sorter.js new file mode 100644 index 0000000..e13fedc --- /dev/null +++ b/includes/js/dojo/data/util/sorter.js @@ -0,0 +1,81 @@ +if(!dojo._hasResource["dojo.data.util.sorter"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code. +dojo._hasResource["dojo.data.util.sorter"] = true; +dojo.provide("dojo.data.util.sorter"); + +dojo.data.util.sorter.basicComparator = function( /*anything*/ a, + /*anything*/ b){ + // summary: + // Basic comparision function that compares if an item is greater or less than another item + // description: + // returns 1 if a > b, -1 if a < b, 0 if equal. + // undefined values are treated as larger values so that they're pushed to the end of the list. + + var ret = 0; + if(a > b || typeof a === "undefined" || a === null){ + ret = 1; + }else if(a < b || typeof b === "undefined" || b === null){ + ret = -1; + } + return ret; //int, {-1,0,1} +}; + +dojo.data.util.sorter.createSortFunction = function( /* attributes array */sortSpec, + /*dojo.data.core.Read*/ store){ + // summary: + // Helper function to generate the sorting function based off the list of sort attributes. + // description: + // The sort function creation will look for a property on the store called 'comparatorMap'. If it exists + // it will look in the mapping for comparisons function for the attributes. If one is found, it will + // use it instead of the basic comparator, which is typically used for strings, ints, booleans, and dates. + // Returns the sorting function for this particular list of attributes and sorting directions. + // + // sortSpec: array + // A JS object that array that defines out what attribute names to sort on and whether it should be descenting or asending. + // The objects should be formatted as follows: + // { + // attribute: "attributeName-string" || attribute, + // descending: true|false; // Default is false. + // } + // store: object + // The datastore object to look up item values from. + // + var sortFunctions=[]; + + function createSortFunction(attr, dir){ + return function(itemA, itemB){ + var a = store.getValue(itemA, attr); + var b = store.getValue(itemB, attr); + //See if we have a override for an attribute comparison. + var comparator = null; + if(store.comparatorMap){ + if(typeof attr !== "string"){ + attr = store.getIdentity(attr); + } + comparator = store.comparatorMap[attr]||dojo.data.util.sorter.basicComparator; + } + comparator = comparator||dojo.data.util.sorter.basicComparator; + return dir * comparator(a,b); //int + }; + } + + for(var i = 0; i < sortSpec.length; i++){ + sortAttribute = sortSpec[i]; + if(sortAttribute.attribute){ + var direction = (sortAttribute.descending) ? -1 : 1; + sortFunctions.push(createSortFunction(sortAttribute.attribute, direction)); + } + } + + return function(rowA, rowB){ + var i=0; + while(i < sortFunctions.length){ + var ret = sortFunctions[i++](rowA, rowB); + if(ret !== 0){ + return ret;//int + } + } + return 0; //int + }; // Function +}; + +} -- cgit v1.2.3-54-g00ecf