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427 lines
14 KiB
HTML
427 lines
14 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
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<title>Midas Specification</title>
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<meta name="author" content="Kathleen Brade">
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<style type="text/css">
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td { vertical-align: top; }
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</style>
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</head>
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<body>
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Last revised: August 23, 2005<br>
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<br>
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This document describes the rich text editing controls for web pages
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available in recent mozilla browsers.<br>
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<br>
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<h1> Enabling Rich Text Editing in your web page:</h1>
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<div style="margin-left: 40px;">Given a document, you can add the
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attribute "designMode" and set it to "on" to get an editable document.
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For example, in JavaScript, if you have an iframe with an id of 'edit', you
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can get its contentDocument and set designMode to "on" like this:<br>
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<div style="margin-left: 40px;"><code>document.getElementById("edit").contentDocument.designMode="on";</code></div>
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<br>
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Right now, you can't completely turn off editing by setting designMode
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to "off." Setting designMode to "off" will prevent certain operations
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from being handled but typing and other actions are still possible.<br>
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</div>
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<br>
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<h1>Invoking Commands:</h1>
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<h2>execCommand</h2>
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<div style="margin-left: 40px;">Given a document that has rich text
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editing enabled (see above), you can invoke specific commands on the
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document by calling execCommand with 3 parameters. For example,
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in JavaScript, if you have an editable document,
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you can invoke the bold command by calling this:<br>
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<div style="margin-left: 40px;"><code>editableDocument.execCommand("Bold",
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false, null);</code></div><br>
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Notes: If you haven't set designMode to "On", you will get an
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error. This could also happen if you call execCommand with the wrong
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document.<br>
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<br>
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There are 3 required parameters for execCommand:<br>
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<ol>
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<li>command string</li>
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<li>boolean flag for showing UI</li>
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<li>value string</li>
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</ol>
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The first parameter is a string which contains the command. The
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second parameter is a boolean flag. If it is set to true, you will
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get an error (NS_ERROR_NOT_IMPLEMENTED). The third parameter is a
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string which is the value. Some commands will require details such
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as the particular size you want to set when setting a font size.<br>
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<br>
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The section on Supported Commands will document each command and any
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corresponding values needed.<br>
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</div>
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<div style="margin-left: 40px;"> </div>
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<br>
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<h2>queryCommandEnabled</h2>
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<blockquote>This command operates on the editable document. There
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is one required parameter (the command string). The result is a
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boolean which is true if the command is can be done given the current
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selection and/or caret position. The result is false if the command
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should not be invoked (execCommand) given the current selection and/or
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caret position.<br>
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</blockquote>
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<br>
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<h2>queryCommandState</h2>
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<blockquote>This section needs to be written. It can be called
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similarly to IE implementation.<br>
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</blockquote>
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<br>
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<h2>queryCommandValue</h2>
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<blockquote> This section needs to be written. It can be called
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similarly to IE implementation.
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</blockquote>
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<br>
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<h1>Supported Commands:</h1>
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<div style="margin-left: 40px;">The following list of commands is
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presented in alphabetical order. The commands may be mixed case
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or whatever makes your code more readable.<br>
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<br>
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<table cellpadding="4" cellspacing="0" border="1"
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style="text-align: left; width: 100%;">
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<tbody>
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<tr>
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<td>command</td>
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<td>value</td>
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<td>explanation / behavior</td>
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</tr>
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<tr>
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<td>backcolor</td>
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<td>????</td>
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<td>This command will set the background color of the document.</td>
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</tr>
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<tr>
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<td>bold</td>
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<td>none</td>
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<td>If there is no selection, the insertion
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point will set bold for subsequently typed characters.<br>
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<br>
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If there is a selection and all of the characters are already bold, the
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bold will be removed. Otherwise, all selected characters will become
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bold.</td>
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</tr>
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<tr>
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<td>contentReadOnly</td>
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<td>true<br>false</td>
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<td>This command will make the editor readonly (true) or editable
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(false). Anticipated usage is for temporarily disabling input while
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something else is occurring elsewhere in the web page.</td>
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</tr>
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<tr>
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<td>copy</td>
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<td>none</td>
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<td>If there is a selection, this command will copy the selection
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to the clipboard. If there isn't a selection, nothing will happen.<br>
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<br>
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note: this command won't work without setting a pref or using signed
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JS. See: http://www.mozilla.org/editor/midasdemo/securityprefs.html<br>
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<br>
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note: the shortcut key will automatically trigger this command
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(typically accel-C) with or without the signed JS or any code on the page to
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handle it.</td>
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</tr>
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<tr>
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<td>createlink</td>
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<td>url (href)</td>
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<td>This command will not do anything if no selection
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is made. If there is a selection, a link will be inserted around
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the selection with the url parameter as the href of the link.</td>
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</tr>
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<tr>
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<td>cut</td>
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<td>none</td>
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<td>If there is a selection, this command will copy the selection
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to the clipboard and remove the selection from the edit control.
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If there isn't a selection, nothing will happen.<br>
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<br>
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note: this command won't work without setting a pref or using signed
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JS. See: http://www.mozilla.org/editor/midasdemo/securityprefs.html<br>
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<br>
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note: the shortcut key will automatically trigger this command
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(typically accel-X) with or without the signed JS or any code on the page to
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handle it.</td>
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</tr>
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<tr>
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<td>decreasefontsize</td>
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<td>none</td>
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<td>This command will add a <small> tag around selection or
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at insertion point.</td>
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</tr>
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<tr>
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<td>delete</td>
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<td>none</td>
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<td>This command will delete all text and objects that
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are selected.</td>
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</tr>
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<tr>
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<td>fontname</td>
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<td>????</td>
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<td>This command will set the fontface for a selection
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or at the insertion point if there is no selection.</td>
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</tr>
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<tr>
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<td>fontsize</td>
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<td>????</td>
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<td>This command will set the fontsize for a selection
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or at the insertion point if there is no selection.</td>
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</tr>
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<tr>
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<td>forecolor</td>
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<td>????</td>
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<td>This command will set the text color of the
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selection or at the insertion point.</td>
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</tr>
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<tr>
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<td>formatblock</td>
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<td><h1><br>
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<h2><br>
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<h3><br>
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<h4><br>
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<h5><br>
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<h6><br>
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<pre><br>
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<address><br>
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<p><br>
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p<br>
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[this list may not be complete]</td>
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<td><br></td>
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</tr>
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<tr>
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<td>heading</td>
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<td><h1><br>
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<h2><br>
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<h3><br>
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<h4><br>
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<h5><br>
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<h6></td>
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<td><br></td>
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</tr>
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<tr>
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<td>hilitecolor</td>
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<td>????</td>
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<td>This command will set the hilite color of the selection or at
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the insertion point. It only works with usecss enabled.</td>
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</tr>
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<tr>
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<td>increasefontsize</td>
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<td>none</td>
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<td>This command will add a
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<big> tag around selection or at insertion point.</td>
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</tr>
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<tr>
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<td>indent</td>
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<td>none</td>
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<td>Indent the block where the caret is located.</td>
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</tr>
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<tr>
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<td>inserthorizontalrule</td>
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<td>none</td>
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<td>This command will insert a horizontal rule
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(line) at the insertion point.<br>
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<br>
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Does it delete the selection?</td>
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</tr>
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<tr>
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<td>inserthtml</td>
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<td>valid html string</td>
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<td>This command will insert the given html into the <body>
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in place of the current selection or at the caret location.</td>
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</tr>
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<tr>
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<td>insertimage</td>
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<td>url (src)</td>
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<td>This command will insert an image (referenced by
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url) at the insertion point.<br>
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<br>
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Does it delete the selection?</td>
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</tr>
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<tr>
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<td>insertorderedlist</td>
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<td>none</td>
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<td><br></td>
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</tr>
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<tr>
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<td>insertunorderedlist</td>
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<td>none</td>
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<td><br></td>
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</tr>
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<tr>
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<td>insertparagraph</td>
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<td>none</td>
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<td><br></td>
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</tr>
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<tr>
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<td>italic</td>
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<td>none</td>
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<td>If there is no selection, the insertion
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point will set italic for subsequently typed characters. <br>
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<br>
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If there is a selection and all of the characters are already italic,
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the italic will be removed. Otherwise, all selected characters will
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become italic.</td>
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</tr>
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<tr>
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<td>justifycenter</td>
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<td>none</td>
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<td><br></td>
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</tr>
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<tr>
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<td>justifyfull</td>
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<td>none</td>
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<td><br></td>
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</tr>
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<tr>
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<td>justifyleft</td>
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<td>none</td>
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<td><br></td>
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</tr>
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<tr>
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<td>justifyright</td>
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<td>none</td>
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<td><br></td>
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</tr>
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<tr>
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<td>outdent</td>
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<td>none</td>
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<td>Outdent the block where the caret is located. If the
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block is not indented prior to calling outdent, nothing will happen.<br>
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<br>
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note: is an error thrown if no outdenting is done?</td>
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</tr>
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<tr>
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<td>paste</td>
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<td>none</td>
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<td>This command will paste the contents of the clipboard at the
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location of the caret. If there is a selection, it will be deleted
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prior to the insertion of the clipboard's contents.<br>
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<br>
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note: this command won't work without setting a pref or using signed
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JS.<br>
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<tt>user_pref("capability.policy.policynames", "allowclipboard");</tt><tt>
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user_pref("capability.policy.allowclipboard.Clipboard.paste",
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"allAccess");</tt><br>
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See: http://www.mozilla.org/editor/midasdemo/securityprefs.html<br>
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<br>
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note: the shortcut key will automatically trigger this command
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(typically accel-V) with or without the signed JS or any code on the page to
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handle it.</td>
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</tr>
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<tr>
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<td>redo</td>
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<td>none</td>
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<td>This command will redo the previous undo action. If undo
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was not the most recent action, this command will have no effect.<br>
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<br>
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note: the shortcut key will automatically trigger this command
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(typically accel-shift-Z)</td>
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</tr>
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<tr>
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<td>removeformat</td>
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<td>none</td>
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<td><br></td>
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</tr>
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<tr>
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<td>selectall</td>
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<td>none</td>
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<td>This command will select all of the contents within the
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editable area.<br>
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<br>
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note: the shortcut key will automatically trigger this command
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(typically accel-A)</td>
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</tr>
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<tr>
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<td>strikethrough</td>
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<td>none</td>
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<td>If there is no selection, the insertion point
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will set strikethrough for subsequently typed characters.<br>
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<br>
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If there is a selection and all of the characters are already striked,
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the strikethrough will be removed. Otherwise, all selected characters
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will have a line drawn through them.</td>
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</tr>
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<tr>
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<td>styleWithCSS</td>
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<td>true<br>false</td>
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<td>This command is used for
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toggling the format of generated content. By default (at least
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today), this is true. An example of the differences is that the
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"bold" command will generate <b> if the styleWithCSS command is false
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and generate css style attribute if the styleWithCSS command is true.</td>
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</tr>
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<tr>
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<td>subscript</td>
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<td>none</td>
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<td>If there is no selection, the insertion point
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will set subscript for subsequently typed characters. <br>
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<br>
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If there is a selection and all of the characters are already
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subscripted, the subscript will be removed. Otherwise, all
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selected characters will be drawn slightly lower than normal text.</td>
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</tr>
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<tr>
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<td>superscript</td>
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<td>none</td>
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<td>If there is no selection, the insertion point
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will set superscript for subsequently typed characters.<br>
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<br>
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If there is a selection and all of the characters are already
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superscripted, the superscript will be removed. Otherwise, all
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selected characters will be drawn slightly higher than normal text.</td>
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</tr>
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<tr>
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<td>underline</td>
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<td>none</td>
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<td>If there is no selection, the insertion
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point will set underline for subsequently typed characters.<br>
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<br>
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If there is a selection and all of the characters are already
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underlined, the underline will be removed. Otherwise, all
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selected characters will become underlined.</td>
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</tr>
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<tr>
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<td>undo</td>
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<td>none</td>
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<td>This command will undo the previous action. If no action
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has occurred in the document, then this command will have no effect.<br>
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<br>
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note: the shortcut key will automatically trigger this command
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(typically accel-Z)</td>
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</tr>
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<tr>
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<td>unlink</td>
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<td>none</td>
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<td><br></td>
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</tr>
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</tbody>
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</table>
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<br>
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<table cellpadding="4" cellspacing="0" border="1"
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style="text-align: left; width: 100%;">
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<tbody>
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<tr>
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<td colspan="3">DEPRECATED COMMANDS</td>
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</tr>
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<tr>
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<td>readonly</td>
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<td>true<br>false</td>
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<td>This command has been replaced with contentReadOnly. It
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takes the same values as contentReadOnly, but the meaning of true and
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false are inversed.</td>
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</tr>
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<tr>
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<td>useCSS</td>
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<td>truefalse</td>
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<td>This command has been replaced with styleWithCSS. It takes
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the same values as styleWithCSS, but the meaning of true and false are
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inversed.</td>
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</tr>
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</tbody>
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</table>
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</div>
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<br>
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</body>
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</html>
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