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yahooSearch.js
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yahooSearch.js
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// model that works with Yahoo Search API
dojo.declare("dojox.grid.data.yahooSearch", dojox.grid.data.dynamic,
function(inFields, inData, inSearchNode) {
this.rowsPerPage = 20;
this.searchNode = inSearchNode;
this.fieldNames = [];
for (var i=0, f; (f=inFields[i]); i++)
this.fieldNames.push(f.name);
}, {
// server send / receive
encodeParam: function(inName, inValue) {
return dojo.string.substitute('&${0}=${1}', [inName, inValue]);
},
getQuery: function() {
return dojo.byId(this.searchNode).value.replace(/ /g, '+');
},
getParams: function(inParams) {
var url = this.url;
url += '?appid=foo';
inParams = inParams || {};
inParams.output = 'json';
inParams.results = this.rowsPerPage;
inParams.query = this.getQuery();
for (var i in inParams)
if (inParams[i] != undefined)
url += this.encodeParam(i, inParams[i]);
return url;
},
send: function(inAsync, inParams, inOnReceive, inOnError) {
var
p = this.getParams(inParams),
d = dojo.xhrPost({
url: "support/proxy.php",
content: {url: p },
contentType: "application/x-www-form-urlencoded; charset=utf-8",
handleAs: 'json-comment-filtered',
sync: !inAsync
});
d.addCallbacks(dojo.hitch(this, "receive", inOnReceive, inOnError), dojo.hitch(this, "error", inOnError));
this.onSend(inParams);
return d;
},
receive: function(inOnReceive, inOnError, inData) {
try {
inData = inData.ResultSet;
inOnReceive(inData);
this.onReceive(inData);
} catch(e) {
if (inOnError)
inOnError(inData);
}
},
error: function(inOnError, inErr) {
var m = 'io error: ' + inErr.message;
alert(m);
if (inOnError)
inOnError(m);
},
fetchRowCount: function(inCallback) {
this.send(true, inCallback );
},
// request data
requestRows: function(inRowIndex, inCount) {
inRowIndex = (inRowIndex == undefined ? 0 : inRowIndex);
var params = {
start: inRowIndex + 1
}
this.send(true, params, dojo.hitch(this, this.processRows));
},
// server callbacks
processRows: function(inData) {
for (var i=0, l=inData.totalResultsReturned, s=inData.firstResultPosition; i<l; i++) {
this.setRow(inData.Result[i], s - 1 + i);
}
// yahoo says 1000 is max results to return
var c = Math.min(1000, inData.totalResultsAvailable);
if (this.count != c) {
this.setRowCount(c);
this.allChange();
this.onInitializeData(inData);
}
},
getDatum: function(inRowIndex, inColIndex) {
var row = this.getRow(inRowIndex);
var field = this.fields.get(inColIndex);
return (inColIndex == undefined ? row : (row ? row[field.name] : field.na));
},
// events
onInitializeData: function() {
},
onSend: function() {
},
onReceive: function() {
}
});
// report
modelChange = function() {
var n = dojo.byId('rowCount');
if (n)
n.innerHTML = dojo.string.substitute('about ${0} row(s)', [model.count]);
}
// some data formatters
getCellData = function(inCell, inRowIndex, inField) {
var m = inCell.grid.model;
return m.getDatum(inRowIndex, inField);
}
formatLink = function(inData, inRowIndex) {
if (!inData)
return '&nbsp;';
var text = getCellData(this, inRowIndex, this.extraField);
return dojo.string.substitute('<a target="_blank" href="${href}">${text}</a>', {href: inData, text: text });
};
formatImage = function(inData, inRowIndex) {
if (!inData)
return '&nbsp;';
var info = getCellData(this, inRowIndex, this.extraField);
var o = {
href: inData,
src: info.Url,
width: info.Width,
height: info.Height
}
return dojo.string.substitute('<a href="${href}" target="_blank"><img border=0 src="${src}" width="${width}" height="${height}"></a>', o);
};
formatDate = function(inDatum, inRowIndex) {
if (!inDatum)
return '&nbsp;';
var d = new Date(inDatum * 1000);
return dojo.string.substitute("${0}/${1}/${2}",[d.getMonth()+1, d.getDate(), d.getFullYear()])
};
formatDimensions = function(inData, inRowIndex) {
if (!inData)
return '&nbsp;';
var w = inData, h = getCellData(this, inRowIndex, this.extraField);
return w + ' x ' + h;
}

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yahooSearch.js (3 KB)

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