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1 " |
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2 COPYRIGHT (c) 1992-93 by Claus Gittinger |
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3 All Rights Reserved |
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4 |
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5 This software is furnished under a license and may be used |
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6 only in accordance with the terms of that license and with the |
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7 inclusion of the above copyright notice. This software may not |
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8 be provided or otherwise made available to, or used by, any |
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9 other person. No title to or ownership of the software is |
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10 hereby transferred. |
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11 " |
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12 |
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13 Controller subclass:#EnterFieldGroup |
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14 instanceVariableNames:'fields currentField leaveAction' |
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15 classVariableNames:'' |
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16 poolDictionaries:'' |
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17 category:'Views-Support' |
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18 ! |
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19 |
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20 EnterFieldGroup comment:' |
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21 |
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22 COPYRIGHT (c) 1992-93 by Claus Gittinger |
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23 All Rights Reserved |
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24 |
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25 EnterFieldGroup controlls the interaction between EnterFields |
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26 enabling next/prev field when a field is left. Instances of |
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27 this class keep track of which field of the group is the currentField |
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28 (i.e. the one getting keyboard input). |
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29 The block accessable as leaveAction is evaluated when the last |
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30 field of the group is left (by cursor-down or cr). Usually this block |
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31 triggers some action on the fields. |
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32 |
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33 %W% %E% |
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34 written nov 91 by claus |
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35 '! |
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36 |
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37 !EnterFieldGroup methodsFor:'adding / removing'! |
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38 |
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39 add:aField |
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40 |thisIndex next| |
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41 |
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42 fields isNil ifTrue:[ |
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43 fields := OrderedCollection new |
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44 ]. |
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45 fields add:aField. |
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46 thisIndex := fields size. |
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47 aField controller:self. |
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48 aField disable. |
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49 |
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50 "set the fields enableAction to disable active field" |
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51 |
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52 aField enableAction:[ |
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53 currentField notNil ifTrue:[ |
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54 currentField disable |
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55 ]. |
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56 currentField := aField |
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57 ]. |
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58 |
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59 "set the fields leaveAction to enable next field" |
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60 |
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61 aField leaveAction:[:key | |
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62 currentField notNil ifTrue:[ |
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63 currentField disable |
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64 ]. |
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65 (key == #Up) ifTrue:[ |
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66 (thisIndex == 1) ifTrue:[ |
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67 next := fields size |
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68 ] ifFalse:[ |
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69 next := thisIndex - 1 |
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70 ] |
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71 ]. |
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72 (key == #Down) ifTrue:[ |
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73 (thisIndex == (fields size)) ifTrue:[ |
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74 next := 1 |
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75 ] ifFalse:[ |
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76 next := thisIndex + 1 |
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77 ] |
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78 ]. |
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79 (key == #Return) ifTrue:[ |
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80 (thisIndex == (fields size)) ifTrue:[ |
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81 leaveAction notNil ifTrue:[ |
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82 leaveAction value. |
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83 currentField := nil |
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84 ] ifFalse:[ |
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85 next := 1 |
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86 ] |
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87 ] ifFalse:[ |
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88 next := thisIndex + 1 |
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89 ] |
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90 ]. |
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91 next notNil ifTrue:[ |
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92 (fields at:next) enable. |
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93 currentField := fields at:next |
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94 ] |
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95 ] |
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96 ! ! |
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97 |
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98 !EnterFieldGroup methodsFor:'accessing'! |
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99 |
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100 leaveAction:aBlock |
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101 leaveAction := aBlock |
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102 ! ! |
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103 |
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104 !EnterFieldGroup methodsFor:'controlling'! |
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105 |
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106 canHandle:aKey |
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107 ^ true |
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108 ! |
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109 |
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110 keyPress:key x:x y:y in:aView |
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111 "key-press in a field" |
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112 |
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113 currentField notNil ifTrue:[ |
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114 currentField keyPress:key x:0 y:0 |
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115 ] |
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116 ! |
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117 |
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118 keyPress:key x:x y:y |
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119 "key-press in an outer view when keyHandler has been set" |
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120 |
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121 currentField notNil ifTrue:[ |
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122 currentField keyPress:key x:0 y:0 |
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123 ] |
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124 ! |
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125 |
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126 buttonMotion:state x:x y:y in:aView |
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127 aView buttonMotion:state x:x y:y |
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128 ! |
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129 |
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130 buttonShiftPress:button x:x y:y in:aView |
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131 aView buttonShiftPress:button x:x y:y |
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132 ! |
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133 |
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134 buttonMultiPress:button x:x y:y in:aView |
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135 aView buttonMultiPress:button x:x y:y |
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136 ! |
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137 |
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138 buttonPress:button x:x y:y in:aView |
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139 aView buttonPress:button x:x y:y |
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140 ! |
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141 |
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142 buttonRelease:button x:x y:y in:aView |
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143 aView buttonRelease:button x:x y:y |
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144 ! ! |