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The orgeclipsehelpuibrowserLaunchURL class provides another mechanism for opening a browser This action delegate, part of the orgeclipsehelpui plug-in, can be used to add a workbench menu (see Section 663, Defining a menu item and toolbar button, on page 245) that opens a browser on a predefined Web page (reading the code, this action appears to have cross-platform support, but we ve only tried this on Windows) For example, in the Favorites product, you could add a new action to the top-level Favorites menu by adding the following declaration to the Favorites ActionSet in the plug-in manifest
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<action id="comqualityeclipsefavoritesbrowseWeb" menubarPath="comqualityeclipsefavoritesworkbenchMenu/content" label="Browse QualityEclipse" icon="icons/webgif" style="push" tooltip="Use the LaunchURL class to open a browser" class="orgeclipsehelpuibrowserLaunchURL" url="http://wwwqualityeclipsecom"/>
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The url attribute in the declaration above specifies the Web page displayed by the LaunchURL action delegate Unfortunately, the plug-in manifest editor does not support the url attribute, so you must switch to the pluginxml page to hand-code the attribute In addition, there does not appear to be a command equivlent for this action delegate
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The launch() method in the orgeclipseswtprogramProgram class is useful for opening the default email client in Windows, but not so in Linux What you need is a separate command that opens email clients differently based on the current platform To start, create a new OpenEmailHandler class with fields and setters for standard email elements
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public class OpenEmailHandler extends AbstractHandler { private String recipient; private String subject; private String body; public OpenEmailHandler() { setRecipient("info@qualityeclipsecom"); setSubject("Question"); setBody("My question is \nSecond line\nThird line"); } public void setRecipient(String recipient) { thisrecipient = recipient; } public void setSubject(String subject) { thissubject = subject; } public void setBody(String body) { thisbody = body; } }
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Next add a execute() method that determines a platform-specific template, fills in the specified email elements, and then launches the email client
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Over time, you can enhance this method to check for additional Linux email clients
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public void execute(ExecutionEvent event) throws ExecutionException { String template; if (SWTgetPlatform()equals("win32")) { template = "mailto:${recipient}" + " Subject=${subject}&Body=${body}"; } else { // Put code here to test for various Linux email clients template = "netscape mailto:${recipient}" + " Subject=${subject}&Body=${body}"; } String mailSpec = buildMailSpec(template); if (mailSpecstartsWith("mailto:")) { Programlaunch(mailSpec); } else { try { RuntimegetRuntime()exec(mailSpec); } catch (IOException e) { FavoritesLoglogError( "Failed to open mail client: " + mailSpec, e); } } return null; }
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The preceding run() method calls the buildMailSpec() method to generate an email specification based on the platform-specific template provided It replaces tokens, such as ${subject}, in the template with their respective values
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private String buildMailSpec(String template) { StringBuffer buf = new StringBuffer(1000); int start = 0; while (true) { int end = templateindexOf("${", start); if (end == -1) { bufappend(templatesubstring(start)); break; } bufappend(templatesubstring(start, end)); start = templateindexOf("}", end + 2); if (start == -1) { bufappend(templatesubstring(end)); break; }
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String key = templatesubstring(end + 2, start); if (keyequalsIgnoreCase("recipient")) { bufappend(recipient); } else if (keyequalsIgnoreCase("subject")) { bufappend(subject); } else if (keyequalsIgnoreCase("body")) { appendBody(buf); } start++; } return buftoString(); }
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The buildMailSpec() method calls appendBody() to append email content to the email specification Carriage return and line feed characters are replaced with %0A to create separate lines when appending the email s content
private void appendBody(StringBuffer buf) { if (body == null) return; int start = 0; while (true) { int end = bodyindexOf('\n', start); if (end == -1) { bufappend(bodysubstring(start)); return; } if (end > 0 && bodycharAt(end - 1) == '\r') bufappend(bodysubstring(start, end - 1)); else bufappend(bodysubstring(start, end)); bufappend("%0A"); start = end + 1; } }
Now you can add a command (see Section 61, Commands, on page 216) and menu contribution to add an email button to the Favorites view toolbar
<extension point="orgeclipseuicommands"> <command categoryId="comqualityeclipsefavoritescommandscategory" defaultHandler= "comqualityeclipsefavoriteshandlersOpenEmailHandler" description="Write an email using the default email client" id="comqualityeclipsefavoritescommandsopenEmail" name="Open Email"> </command>