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<h1>Interoperability of digilib HTML pages with the Alcatraz toolbar</h1>

<p>A toolbar-friendly digilib page must define a Javascript variable
<b><code>toolbarEnabledURL</code></b> whose value is a HTTP URL that
produces a <em>toolbar-enabled</em> page. The toolbar should present a
button to &quot;take over&quot; the page design by replacing
the current page with the page from the given URL.</p>

<h2>Toolbar-enabled page</h2>

<p>A <em>toolbar-enabled</em> page must offer the following Javascript functions:</p>

<h3>Identification</h3>

<ul>
  <li><b><code>dlScriptVersion</code></b>: a String variable that contains the version number of the Javascript code (e.g. &quot;1.12b3&quot;)<br>
  The existence of this variable can be used to test for a <em>toolbar-enabled</em> page</li>
</ul>

<h3>Interactive operations</h3>

<ul>
  <li><b><code>setMark()</code></b>: lets the user click and sets a mark at the clicked location</li>
  <li><b><code>zoomArea()</code></b>: lets the user click to select an area and zooms to the selected area</li>
  <li><b><code>moveCenter()</code></b>: lets the user click and recenters the image around the clicked location</li>
</ul>

<h3>Page operations</h3>

<ul>
  <li><b><code>getRef()</code></b>: returns a String with a URL reference to the current document</li>
  <li><b><code>removeMark()</code></b>: removes the last mark</li>
  <li><b><code>zoomBy(float factor)</code></b>: magnifies the image by the given factor around the current center</li>
  <li><b><code>zoomFullpage()</code></b>: zooms out so that the whole image is visible</li>
  <li><b><code>display(int prio)</code></b>: reloads the page with the current parameters</li>
</ul>

<h3>Parameter operations</h3>

<ul>
  <li><b><code>newParameter(String name, String defaultValue, int prio)</code></b>: declares a new parameter with name, default value (can be of any type) and priority</li>
  <li><b><code>getParameter(String name)</code></b>: returns the value of the parameter with the name <code>name</code></li>
  <li><b><code>setParameter(String name, String value)</code></b>: sets the value of the named parameter (value can be of any type)</li>
  <li><b><code>getAllParameters(int prio)</code></b>: returns a String of all parameters in HTTP request format (name=value) below the given priority</li>
  <li><b><code>addMark(Position pos)</code></b>: adds a mark with the given Position</li>
  <li><b><code>deleteMark()</code></b>: removes the last mark form the list</li>
  <li><b><code>getAllMarks()</code></b>: returns a String with all current marks in digilib format (for parameter &quot;mk&quot;)</li>
  <li><b><code>addFlag(String name)</code></b>: adds a digilib mode flag with the given name</li>
  <li><b><code>hasFlag(String name)</code></b>: returns if the given flag is currently set</li>
  <li><b><code>removeFlag(String name)</code></b>: removes the given flag</li>
  <li><b><code>toggleFlag(String name)</code></b>: toggles the given flag</li>
  <li><b><code>getAllFlags()</code></b>: returns a String with all current flags in digilib format (for parameter &quot;mo&quot;)</li>
</ul>

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author	hertzhaft
date	Sat, 27 Oct 2012 00:12:36 +0200 (2012-10-26)
parents	a00114a0c957
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