dojox.data.GoogleImageSearchStore ¶

Status:	Draft
Version:	1.0
Project owner:	Shane O’Sullivan
Available:	since 1.2?

Contents

dojox.data.GoogleImageSearchStore
- Introduction
- Usage
- Examples
- See also

dojox.data.GoogleImageSearchStore is a data store that can be used to search Google.

Introduction ¶

dojox.data.GoogleImageSearchStore is a read only data store uses Google APIs to find images. It implements the ‘dojo.data.api.Read API <dojo/data/api/Read>’_, which you should refer to for general usage.

Usage ¶

The pattern of using the GoogleImageSearchStore is

Instantiate the class, passing in whatever variables required, all of which are optional. These include:

label The argument to use as the label. This is used when the getLabel function is called to retrieve the correct part of the data item. You generally shouldn’t set this.

key Your Google API key. This is optional, and should only be used if you for some reason want Google to track the number of requests made by your code (for analytical purposes maybe)

lang The language you want the results returned in. This defaults to the browsers’ language.

urlPreventCache Specifies whether or not to forcibly prevent caching of results. This defaults to true.

Call the fetch method, passing it the search query and the function to call when the query is completed. The only supported attribute of the query is text, the text to search for.
Iterate over the results, calling the getValue function to retrieve values from each result item. The pieces of data in each result item are

title The page title in HTML format

titleNoFormatting The page title in plain text. This is the default field used as the label.

url The URL for the item.

unescapedUrl The URL for the image, without URL escaping. This is often more readable

tbUrl The URL for the image thumbnail

visibleUrl A shortened version of the URL associated with the result, stripped of a protocol and path

originalContextUrl The URL of the page containing the image.

width The width of the image in pixels.

height The height of the image in pixels.

tbWidth The width of the image thumbnail in pixels.

tbHeight The height of the image thumbnail in pixels.

content A snippet of information about the image, in HTML format

contentNoFormatting A snippet of information about the image, in plain text

<script type="text/javascript">
 dojo.require("dojox.data.GoogleSearchStore");
 var store = new dojox.data.GoogleImageSearchStore();

 var query = {text: "dojo ajax toolkit"};

 var callbackFunction = function(items /* Array */) {

   console.log("Successfully retrieved " + items.length + " items for the query '" + query.text + "'");
   dojo.forEach(items, function(item){
     console.log ("Title is " + store.getValue(item, "title"));
     console.log ("Url is " + store.getValue(item, "unescapedUrl"));
     console.log ("Summary Content is " + store.getValue(item, "content"));
   })
 };

 var onErrorFunction = function() {
   console.log("An error occurred getting Google Search data");
 }

 store.fetch({
   query: query,
   count: 20,
   start: 0,
   onComplete: callbackFunction,
   onError: onErrorFunction
 });
</script>

Examples ¶

Programmatic example¶

<script type="text/javascript">
dojo.require("dojox.data.GoogleSearchStore");

function doSearch() {

  var store = new dojox.data.GoogleImageSearchStore();

  var query = {text: dojo.byId("searchInput").value};

  var callbackFunction = function(items /* Array */) {

    var table = dojo.byId("resultTable");
    var tableBody = table.tBodies[0];
    dojo.empty(tableBody);

    // Show the table
    dojo.style(table, "display", "");


    dojo.forEach(items, function(item, index){
      var row = dojo.create("tr", {}, tableBody);

      var numberCell = dojo.create("td", {innerHTML: index}, row);

      var titleCell = dojo.create("td", {innerHTML: store.getValue(item, "titleNoFormatting")}, row);

      var imgCell = dojo.create("td", {}, row);
      var link = dojo.create("a", {
                         href: store.getValue(item, "unescapedUrl"),
                         target: "_blank"
                       }, imgCell);
      dojo.create("img", {
                         src: store.getValue(item, "tbUrl")
                       }, link);
    })
  };

  var onErrorFunction = function() {
    console.log("An error occurred getting Google Search data");
  }

  store.fetch({
    query: query,
    count: 20,
    start: 0,
    onComplete: callbackFunction,
    onError: onErrorFunction
  });
  console.log("called fetch with query", query);

}
</script>

function doSearch() {

var store = new dojox.data.GoogleImageSearchStore();

var query = {text: dojo.byId("searchInput").value};

var callbackFunction = function(items /* Array */) {

var table = dojo.byId("resultTable");
    var tableBody = table.tBodies[0];
    dojo.empty(tableBody);

// Show the table
    dojo.style(table, "display", "");

dojo.forEach(items, function(item, index){
      var row = dojo.create("tr", {}, tableBody);

var numberCell = dojo.create("td", {innerHTML: index}, row);

var titleCell = dojo.create("td", {innerHTML: store.getValue(item, "titleNoFormatting")}, row);

var onErrorFunction = function() {
    console.log("An error occurred getting Google Search data");
  }

store.fetch({
    query: query,
    count: 20,
    start: 0,
    onComplete: callbackFunction,
    onError: onErrorFunction
  });
  console.log("called fetch with query", query);

}
</script>

<div>
  <span>Enter Search Text</span>
  <input type="text" value="dojo ajax toolkit" id="searchInput">
  <button onclick="doSearch()">Search</button>
</div>

<table id="resultTable" style="border: 1px solid black; display: none;">
  <thead>
    <th>#</th>
    <th>Title</th>
    <th>Image</th>
  </thead>
  <tbody>
  </tbody>
</table>

dojox.data.GoogleImageSearchStore ¶

Introduction ¶

Usage ¶

Examples ¶

Programmatic example¶

See also ¶

Table of Contents

dojox.data.GoogleImageSearchStore¶

Introduction¶

Usage¶

Examples¶

Programmatic example¶

See also¶

Table of Contents

dojox.data.GoogleImageSearchStore ¶

Introduction ¶

Usage ¶

Examples ¶

See also ¶