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| 69 | <li><a class="reference external" href="#">Ext.Ajax Overrides</a><ul> |
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| 70 | <li><a class="reference external" href="#workaround-for-existing-builds">Workaround for Existing Builds</a></li> |
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| 89 | |
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| 90 | <div class="section" id="ext-ajax-overrides"> |
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| 91 | <span id="overrides-ext-ajax"></span><h1>Ext.Ajax Overrides<a class="headerlink" href="#ext-ajax-overrides" title="Permalink to this headline">¶</a></h1> |
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| 92 | <p>GeoExt provides an override for the functionality in |
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| 93 | <a class="reference external" href="http://dev.sencha.com/deploy/dev/docs/?class=Ext.Ajax">Ext.Ajax</a>. If you include |
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| 94 | the <tt class="docutils literal"><span class="pre">override-ext-ajax.js</span></tt> file in your build, any calls to <tt class="docutils literal"><span class="pre">Ext.Ajax</span></tt> |
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| 95 | methods will be routed through <tt class="docutils literal"><span class="pre">OpenLayers.Request</span></tt> methods. The practical |
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| 96 | implication of this is that you can set the <tt class="docutils literal"><span class="pre">OpenLayers.ProxyHost</span></tt> property |
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| 97 | in your application and have this proxy used by Ext components that call |
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| 98 | <tt class="docutils literal"><span class="pre">Ext.Ajax</span></tt> methods.</p> |
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| 99 | <p>To include <tt class="docutils literal"><span class="pre">override-ext-ajax.js</span></tt> in your build, the GeoExt section in |
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| 100 | your build config should look like one of the following:</p> |
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| 101 | <div class="highlight-ini"><pre># include everything (including override-ext-ajax.js) |
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| 102 | [GeoExt.js] |
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| 103 | root = ../lib |
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| 104 | license = geoext-license.js |
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| 105 | exclude = |
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| 106 | GeoExt.js |
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| 107 | GeoExt/SingleFile.js</pre> |
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| 108 | </div> |
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| 109 | <p>or</p> |
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| 110 | <div class="highlight-ini"><pre># custom build |
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| 111 | [GeoExt.js] |
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| 112 | root = ../lib |
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| 113 | license = geoext-license.js |
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| 114 | include = |
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| 115 | overrides/override-ext-ajax.js |
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| 116 | # other files listed here ...</pre> |
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| 117 | </div> |
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| 118 | <div class="section" id="workaround-for-existing-builds"> |
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| 119 | <h2>Workaround for Existing Builds<a class="headerlink" href="#workaround-for-existing-builds" title="Permalink to this headline">¶</a></h2> |
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| 120 | <p>If you are using a build of GeoExt that includes the Ajax overrides (e.g. the |
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| 121 | 0.6 release or earlier), you can work around any issues you may have using this |
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| 122 | override in your appliction by protecting the <tt class="docutils literal"><span class="pre">Ext.lib.Ajax</span></tt> object before |
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| 123 | loading file:<cite>GeoExt.js</cite>.</p> |
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| 124 | <p>The example markup below will remove the effect of the override on Ajax methods.</p> |
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| 125 | <div class="highlight-html"><div class="highlight"><pre><span class="nt"><script </span><span class="na">src=</span><span class="s">"path/to/ext.js"</span><span class="nt">></script></span> |
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| 126 | <span class="nt"><script></span> |
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| 127 | <span class="nx">Ext</span><span class="p">.</span><span class="nx">lib</span><span class="p">.</span><span class="nx">_Ajax</span> <span class="o">=</span> <span class="nx">Ext</span><span class="p">.</span><span class="nx">lib</span><span class="p">.</span><span class="nx">Ajax</span><span class="p">;</span> <span class="c1">// protect the original</span> |
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| 128 | <span class="nx">Ext</span><span class="p">.</span><span class="nx">lib</span><span class="p">.</span><span class="nx">Ajax</span> <span class="o">=</span> <span class="p">{};</span> <span class="c1">// create dummy for override</span> |
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| 129 | <span class="nt"></script></span> |
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| 130 | <span class="nt"><script </span><span class="na">src=</span><span class="s">"path/to/GeoExt.js"</span><span class="nt">></script></span> |
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| 131 | <span class="nt"><script></span> |
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| 132 | <span class="nx">Ext</span><span class="p">.</span><span class="nx">lib</span><span class="p">.</span><span class="nx">Ajax</span> <span class="o">=</span> <span class="nx">Ext</span><span class="p">.</span><span class="nx">lib</span><span class="p">.</span><span class="nx">_Ajax</span><span class="p">;</span> <span class="c1">// restore the original</span> |
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| 133 | <span class="nt"></script></span> |
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| 134 | </pre></div> |
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| 135 | </div> |
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| 136 | <p>Note that issues with the Ajax override present in 0.6 will be fixed in |
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| 137 | subsequent releases.</p> |
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| 138 | </div> |
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