1 | /*
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2 | * FCKeditor - The text editor for Internet - http://www.fckeditor.net
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3 | * Copyright (C) 2003-2009 Frederico Caldeira Knabben
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4 | *
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5 | * == BEGIN LICENSE ==
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6 | *
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7 | * Licensed under the terms of any of the following licenses at your
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8 | * choice:
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9 | *
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10 | * - GNU General Public License Version 2 or later (the "GPL")
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11 | * http://www.gnu.org/licenses/gpl.html
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12 | *
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13 | * - GNU Lesser General Public License Version 2.1 or later (the "LGPL")
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14 | * http://www.gnu.org/licenses/lgpl.html
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15 | *
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16 | * - Mozilla Public License Version 1.1 or later (the "MPL")
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17 | * http://www.mozilla.org/MPL/MPL-1.1.html
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18 | *
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19 | * == END LICENSE ==
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20 | *
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21 | * Plugin: automatically resizes the editor until a configurable maximun
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22 | * height (FCKConfig.AutoGrowMax), based on its contents.
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23 | */
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24 |
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25 | var FCKAutoGrow = {
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26 | MIN_HEIGHT : window.frameElement.offsetHeight,
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27 |
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28 | Check : function()
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29 | {
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30 | var delta = FCKAutoGrow.GetHeightDelta() ;
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31 | if ( delta != 0 )
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32 | {
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33 | var newHeight = window.frameElement.offsetHeight + delta ;
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34 |
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35 | newHeight = FCKAutoGrow.GetEffectiveHeight( newHeight ) ;
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36 |
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37 | if ( newHeight != window.frameElement.height )
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38 | {
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39 | window.frameElement.style.height = newHeight + "px" ;
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40 |
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41 | // Gecko browsers use an onresize handler to update the innermost
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42 | // IFRAME's height. If the document is modified before the onresize
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43 | // is triggered, the plugin will miscalculate the new height. Thus,
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44 | // forcibly trigger onresize. #1336
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45 | if ( typeof window.onresize == 'function' )
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46 | {
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47 | window.onresize() ;
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48 | }
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49 | }
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50 | }
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51 | },
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52 |
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53 | CheckEditorStatus : function( sender, status )
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54 | {
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55 | if ( status == FCK_STATUS_COMPLETE )
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56 | FCKAutoGrow.Check() ;
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57 | },
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58 |
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59 | GetEffectiveHeight : function( height )
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60 | {
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61 | if ( height < FCKAutoGrow.MIN_HEIGHT )
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62 | height = FCKAutoGrow.MIN_HEIGHT;
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63 | else
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64 | {
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65 | var max = FCKConfig.AutoGrowMax;
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66 | if ( max && max > 0 && height > max )
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67 | height = max;
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68 | }
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69 |
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70 | return height;
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71 | },
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72 |
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73 | GetHeightDelta : function()
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74 | {
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75 | var oInnerDoc = FCK.EditorDocument ;
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76 |
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77 | var iFrameHeight ;
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78 | var iInnerHeight ;
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79 |
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80 | if ( FCKBrowserInfo.IsIE )
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81 | {
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82 | iFrameHeight = FCK.EditorWindow.frameElement.offsetHeight ;
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83 | iInnerHeight = oInnerDoc.body.scrollHeight ;
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84 | }
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85 | else
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86 | {
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87 | iFrameHeight = FCK.EditorWindow.innerHeight ;
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88 | iInnerHeight = oInnerDoc.body.offsetHeight +
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89 | ( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-top' ), 10 ) || 0 ) +
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90 | ( parseInt( FCKDomTools.GetCurrentElementStyle( oInnerDoc.body, 'margin-bottom' ), 10 ) || 0 ) ;
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91 | }
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92 |
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93 | return iInnerHeight - iFrameHeight ;
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94 | },
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95 |
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96 | SetListeners : function()
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97 | {
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98 | if ( FCK.EditMode != FCK_EDITMODE_WYSIWYG )
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99 | return ;
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100 |
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101 | FCK.EditorWindow.attachEvent( 'onscroll', FCKAutoGrow.Check ) ;
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102 | FCK.EditorDocument.attachEvent( 'onkeyup', FCKAutoGrow.Check ) ;
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103 | }
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104 | };
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105 |
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106 | FCK.AttachToOnSelectionChange( FCKAutoGrow.Check ) ;
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107 |
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108 | if ( FCKBrowserInfo.IsIE )
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109 | FCK.Events.AttachEvent( 'OnAfterSetHTML', FCKAutoGrow.SetListeners ) ;
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110 |
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111 | FCK.Events.AttachEvent( 'OnStatusChange', FCKAutoGrow.CheckEditorStatus ) ;
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