author | Claus Gittinger <cg@exept.de> |
Thu, 25 Apr 1996 18:35:00 +0200 | |
changeset 612 | 8758d0c9933e |
parent 509 | 3e4d2800717a |
child 681 | bf6770d3d032 |
permissions | -rw-r--r-- |
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" |
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COPYRIGHT (c) 1992 by Claus Gittinger |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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Object subclass:#Controller |
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instanceVariableNames:'model view sensor' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Interface-Support-Controllers' |
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! |
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!Controller class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1992 by Claus Gittinger |
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All Rights Reserved |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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29 |
inclusion of the above copyright notice. This software may not |
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30 |
be provided or otherwise made available to, or used by, any |
|
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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! |
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documentation |
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" |
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Controllers can be used to controll the user-interactions |
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to a model which is shown in a view. |
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|
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For very simple views (and due to the evolution of Smalltalk/X), |
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many view-classes have the controller function integrated. |
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To allow both controller and non-controller operation, events are |
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sent directly to the view, if the view has no controller |
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(i.e. if its controller instance variable is nil). |
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Otherwise, the controller gets the event message. |
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For now (vsn 2.10.4) there are only a few view classes using controllers; |
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however, over time, more will be converted, since separating the controller |
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offers much more flexibility |
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(although view initialization becomes a bit more complex). |
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Over time, expect the buttonPress/Release/Motion and keyPress/Release |
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methods to vanish from the view classes and corresponding controllers to |
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be appearing. |
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This migration should be backward compatible. |
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[Instance variables:] |
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view <View> the view I control |
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model <Model> the model which is to be worked on |
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[author:] |
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Claus Gittinger |
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[see also:] |
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View Model WindowGroup |
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WindowEvent DeviceWorkstation |
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" |
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! ! |
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!Controller class methodsFor:'instance creation'! |
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new |
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^ self basicNew initialize |
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! ! |
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!Controller methodsFor:'ST-80 compatibility'! |
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controlInitialize |
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^ self |
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! |
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open |
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"open my view" |
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view open |
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! ! |
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!Controller methodsFor:'ST-80 compatibility events'! |
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blueButtonActivity |
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"actually, this should be called 'rightButtonActivity'. |
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But for ST-80 compatibility ...." |
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^ self |
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! |
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redButtonActivity |
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"actually, this should be called 'leftButtonActivity'. |
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But for ST-80 compatibility ...." |
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|
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^ self |
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! |
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|
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yellowButtonActivity |
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"actually, this should be called 'middleButtonActivity'. |
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But for ST-80 compatibility ...." |
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|
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|menu actionSelector menuPerformer| |
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|
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" |
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ST/X style static menus - going to be obsoleted ... |
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" |
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(menu := view middleButtonMenu) notNil ifTrue:[ |
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menu showAtPointer. |
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^ self |
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]. |
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menu := self yellowButtonMenu. |
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menu notNil ifTrue:[ |
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menuPerformer := self menuPerformer. |
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|
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" |
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got one, launch the menu. It is supposed |
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to return an actionSelector. |
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" |
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" |
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a temporary kludge: subMenus dont know about |
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actionSelectors yet ... |
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" |
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menu receiver isNil ifTrue:[ |
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menu receiver:menuPerformer |
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] ifFalse:[ |
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" |
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if the menu has an explicit receiver, |
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thats the one to do the work. |
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" |
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menuPerformer := menu receiver |
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]. |
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actionSelector := menu startUp. |
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|
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(actionSelector notNil |
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and:[actionSelector isSymbol]) ifTrue:[ |
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menuPerformer perform:actionSelector |
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]. |
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^ self |
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]. |
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"Modified: 28.2.1996 / 17:32:42 / cg" |
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! ! |
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!Controller methodsFor:'accessing'! |
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menuHolder |
157 |
"by default, the model has to provide the menu" |
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158 |
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159 |
model isNil ifTrue:[^ view]. |
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160 |
^ model |
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161 |
! |
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162 |
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163 |
menuPerformer |
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164 |
"by default, the model is performing menu actions" |
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165 |
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166 |
model isNil ifTrue:[^ view]. |
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167 |
^ model |
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168 |
! |
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169 |
||
170 |
model |
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171 |
"return my model" |
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172 |
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173 |
^ model |
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174 |
! |
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175 |
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176 |
model:aModel |
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"set my model" |
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178 |
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179 |
model notNil ifTrue:[ |
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model removeDependent:view |
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181 |
]. |
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182 |
model := aModel. |
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183 |
"/ model notNil ifTrue:[model addDependent:view] |
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184 |
! |
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185 |
||
186 |
sensor |
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187 |
"return my views sensor" |
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188 |
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189 |
^ view sensor |
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190 |
! |
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191 |
||
192 |
view |
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"return my view" |
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194 |
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195 |
^ view |
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196 |
! |
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197 |
||
0 | 198 |
view:aView |
199 |
"set my view" |
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200 |
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201 |
view notNil ifTrue:[ |
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model notNil ifTrue:[ |
203 |
model removeDependent:view |
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] |
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0 | 205 |
]. |
206 |
view := aView. |
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model notNil ifTrue:[ |
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"/ model addDependent:view |
209 |
view notNil ifTrue:[ |
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210 |
view model:model |
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211 |
] |
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0 | 212 |
]. |
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! ! |
214 |
||
86 | 215 |
!Controller methodsFor:'event handling'! |
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245 | 217 |
buttonMotion:buttonMask x:x y:y |
218 |
"mouse was moved with button pressed in my view; nothing done here" |
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||
220 |
^ self |
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221 |
! |
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222 |
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223 |
buttonMultiPress:button x:x y:y |
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224 |
"a mouse button was pressed again shortly after in my view" |
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225 |
||
226 |
^ self buttonPress:button x:x y:y |
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227 |
! |
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228 |
||
80 | 229 |
buttonPress:button x:x y:y |
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"a mouse button was pressed in my view. |
231 |
Translate buttonPress events into similar ST-80 type |
|
232 |
event messages. This method and/or these ST-80 methods |
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233 |
can be redefined in subclasses" |
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0 | 234 |
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80 | 235 |
((button == 1) or:[button == #select]) ifTrue:[ |
236 |
self redButtonActivity |
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237 |
]. |
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238 |
((button == 2) or:[button == #menu]) ifTrue:[ |
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239 |
self yellowButtonActivity |
|
240 |
]. |
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241 |
(button == 3) ifTrue:[ |
|
242 |
self blueButtonActivity |
|
243 |
] |
|
244 |
! |
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0 | 245 |
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245 | 246 |
buttonRelease:button x:x y:y |
247 |
"a mouse button was released in my view; nothing done here" |
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118 | 248 |
|
245 | 249 |
^ self |
118 | 250 |
! |
251 |
||
252 |
buttonShiftPress:button x:x y:y |
|
253 |
"a mouse button was pressed again shortly after in my view" |
|
254 |
||
255 |
^ self buttonPress:button x:x y:y |
|
256 |
! |
|
257 |
||
245 | 258 |
deviceButtonMotion:state x:x y:y |
153 | 259 |
"this is the low-level (untransformed) event as received |
260 |
from the device (i.e. coordinates are in device coordinates). |
|
261 |
If there is a transformation, apply the inverse |
|
245 | 262 |
and send a buttonMotion with the logical coordinates." |
153 | 263 |
|
264 |
|lx ly trans| |
|
265 |
||
266 |
lx := x. |
|
267 |
ly := y. |
|
268 |
(trans := view transformation) notNil ifTrue:[ |
|
269 |
lx := trans applyInverseToX:lx. |
|
270 |
ly := trans applyInverseToY:ly. |
|
271 |
]. |
|
245 | 272 |
self buttonMotion:state x:lx y:ly |
273 |
! |
|
274 |
||
275 |
deviceButtonPress:button x:x y:y |
|
276 |
"this is the low-level (untransformed) event as received |
|
277 |
from the device (i.e. coordinates are in device coordinates). |
|
278 |
If there is a transformation, apply the inverse |
|
279 |
and send a buttonPress with the logical coordinates." |
|
280 |
||
281 |
|lx ly trans| |
|
282 |
||
283 |
lx := x. |
|
284 |
ly := y. |
|
285 |
(trans := view transformation) notNil ifTrue:[ |
|
286 |
lx := trans applyInverseToX:lx. |
|
287 |
ly := trans applyInverseToY:ly. |
|
288 |
]. |
|
289 |
self buttonPress:button x:lx y:ly |
|
290 |
! |
|
291 |
||
292 |
deviceButtonRelease:button x:x y:y |
|
293 |
"this is the low-level (untransformed) event as received |
|
294 |
from the device (i.e. coordinates are in device coordinates). |
|
295 |
If there is a transformation, apply the inverse |
|
296 |
and send a buttonRelease with the logical coordinates." |
|
297 |
||
298 |
|lx ly trans| |
|
299 |
||
300 |
lx := x. |
|
301 |
ly := y. |
|
302 |
(trans := view transformation) notNil ifTrue:[ |
|
303 |
lx := trans applyInverseToX:lx. |
|
304 |
ly := trans applyInverseToY:ly. |
|
305 |
]. |
|
306 |
self buttonRelease:button x:lx y:ly |
|
153 | 307 |
! |
308 |
||
309 |
deviceKeyPress:key x:x y:y |
|
310 |
"this is the low-level (untransformed) event as received |
|
311 |
from the device (i.e. coordinates are in device coordinates). |
|
312 |
If there is a transformation, apply the inverse |
|
313 |
and send a keyPress with the logical coordinates." |
|
314 |
||
315 |
|lx ly trans| |
|
316 |
||
317 |
lx := x. |
|
318 |
ly := y. |
|
319 |
(trans := view transformation) notNil ifTrue:[ |
|
320 |
lx := trans applyInverseToX:lx. |
|
321 |
ly := trans applyInverseToY:ly. |
|
322 |
]. |
|
323 |
self keyPress:key x:lx y:ly |
|
324 |
! |
|
325 |
||
326 |
deviceKeyRelease:key x:x y:y |
|
327 |
"this is the low-level (untransformed) event as received |
|
328 |
from the device (i.e. coordinates are in device coordinates). |
|
329 |
If there is a transformation, apply the inverse |
|
330 |
and send a keyRelease with the logical coordinates." |
|
331 |
||
332 |
|lx ly trans| |
|
333 |
||
334 |
lx := x. |
|
335 |
ly := y. |
|
336 |
(trans := view transformation) notNil ifTrue:[ |
|
337 |
lx := trans applyInverseToX:lx. |
|
338 |
ly := trans applyInverseToY:ly. |
|
339 |
]. |
|
340 |
self keyRelease:key x:lx y:ly |
|
341 |
! |
|
342 |
||
245 | 343 |
devicePointerEnter:state x:x y:y |
153 | 344 |
"this is the low-level (untransformed) event as received |
345 |
from the device (i.e. coordinates are in device coordinates). |
|
346 |
If there is a transformation, apply the inverse |
|
245 | 347 |
and send a pointerEnter with the logical coordinates." |
153 | 348 |
|
349 |
|lx ly trans| |
|
350 |
||
351 |
lx := x. |
|
352 |
ly := y. |
|
353 |
(trans := view transformation) notNil ifTrue:[ |
|
354 |
lx := trans applyInverseToX:lx. |
|
355 |
ly := trans applyInverseToY:ly. |
|
356 |
]. |
|
245 | 357 |
self pointerEnter:state x:lx y:ly |
358 |
! |
|
359 |
||
360 |
focusIn |
|
361 |
"my view got the keyboard focus; nothing done here" |
|
362 |
||
363 |
^ self |
|
364 |
! |
|
365 |
||
366 |
focusOut |
|
367 |
"my view lost keyboard focus; nothing done here" |
|
368 |
||
369 |
^ self |
|
370 |
! |
|
371 |
||
372 |
keyPress:key x:x y:y |
|
416
0f08407c955e
use sensor shiftDown (instead of device shiftDown)
Claus Gittinger <cg@exept.de>
parents:
413
diff
changeset
|
373 |
"key was pressed in my view; nothing done here, |
0f08407c955e
use sensor shiftDown (instead of device shiftDown)
Claus Gittinger <cg@exept.de>
parents:
413
diff
changeset
|
374 |
except for Tab keys." |
245 | 375 |
|
509 | 376 |
<resource: #keyboard (#Tab #FocusNext #FocusPrevious)> |
377 |
||
502
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
378 |
|windowGroup| |
413
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
379 |
|
502
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
380 |
windowGroup := view windowGroup. |
416
0f08407c955e
use sensor shiftDown (instead of device shiftDown)
Claus Gittinger <cg@exept.de>
parents:
413
diff
changeset
|
381 |
key == #Tab ifTrue:[ |
502
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
382 |
windowGroup notNil ifTrue:[ |
469
6a263638989c
use device shiftDown - NOT sensor shiftDown
Claus Gittinger <cg@exept.de>
parents:
416
diff
changeset
|
383 |
view device shiftDown ifTrue:[ |
502
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
384 |
windowGroup focusPrevious |
416
0f08407c955e
use sensor shiftDown (instead of device shiftDown)
Claus Gittinger <cg@exept.de>
parents:
413
diff
changeset
|
385 |
] ifFalse:[ |
502
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
386 |
windowGroup focusNext |
416
0f08407c955e
use sensor shiftDown (instead of device shiftDown)
Claus Gittinger <cg@exept.de>
parents:
413
diff
changeset
|
387 |
]. |
0f08407c955e
use sensor shiftDown (instead of device shiftDown)
Claus Gittinger <cg@exept.de>
parents:
413
diff
changeset
|
388 |
] |
413
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
389 |
]. |
502
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
390 |
key == #FocusNext ifTrue:[ |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
391 |
windowGroup notNil ifTrue:[ |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
392 |
windowGroup focusNext. |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
393 |
] |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
394 |
]. |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
395 |
key == #FocusPrevious ifTrue:[ |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
396 |
windowGroup notNil ifTrue:[ |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
397 |
windowGroup focusPrevious. |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
398 |
] |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
399 |
]. |
0df8d2b173e4
focusKey handling now done here & in TopView
Claus Gittinger <cg@exept.de>
parents:
472
diff
changeset
|
400 |
|
245 | 401 |
^ self |
413
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
402 |
|
509 | 403 |
"Modified: 7.3.1996 / 13:14:49 / cg" |
245 | 404 |
! |
405 |
||
406 |
keyRelease:key x:x y:y |
|
407 |
"key was released in my view; nothing done here" |
|
408 |
||
409 |
^ self |
|
410 |
! |
|
411 |
||
412 |
pointerEnter:state x:x y:y |
|
413 |
"mouse pointer entered my view; nothing done here" |
|
414 |
||
415 |
^ self |
|
153 | 416 |
! |
417 |
||
245 | 418 |
pointerLeave:state |
419 |
"mouse pointer left my view; nothing done here" |
|
153 | 420 |
|
245 | 421 |
^ self |
422 |
! ! |
|
153 | 423 |
|
413
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
424 |
!Controller methodsFor:'initialize / release'! |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
425 |
|
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
426 |
initialize |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
427 |
"initialize the controller; subclasses should redefine |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
428 |
this and include a super initialize for proper initialization." |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
429 |
|
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
430 |
^ self |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
431 |
! |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
432 |
|
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
433 |
release |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
434 |
"close down the controller; this is sent when the view is destroyed. |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
435 |
Can be redefined in subclasses to do some cleanup action. However, |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
436 |
these redefined methods should do a super release." |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
437 |
|
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
438 |
view notNil ifTrue:[view controller:nil]. |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
439 |
view := nil. |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
440 |
model := nil |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
441 |
! |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
442 |
|
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
443 |
startUp |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
444 |
"startup the controller; this is sent when the view realizes, |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
445 |
right before it becomes visible. |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
446 |
Can be redefined in subclasses to do some startup action." |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
447 |
|
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
448 |
self controlInitialize. |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
449 |
! ! |
2bd84440febd
forward Tab to the views windowGroup (if any)
Claus Gittinger <cg@exept.de>
parents:
252
diff
changeset
|
450 |
|
245 | 451 |
!Controller methodsFor:'menus'! |
452 |
||
453 |
yellowButtonMenu |
|
454 |
"actually, this should be called 'middleButtonMenu'. |
|
455 |
But for ST-80 compatibility ...." |
|
456 |
||
457 |
|sym menuHolder m| |
|
153 | 458 |
|
245 | 459 |
"/ (m := view middleButtonMenu) notNil ifTrue:[ |
460 |
"/ "/ |
|
461 |
"/ "/ has been assigned a static middleButtonMenu |
|
462 |
"/ "/ (or a cached menu) |
|
463 |
"/ "/ |
|
464 |
"/ ^ m |
|
465 |
"/ ]. |
|
153 | 466 |
|
245 | 467 |
menuHolder := self menuHolder. |
153 | 468 |
|
245 | 469 |
" |
470 |
try ST-80 style menus first: |
|
471 |
if there is a model, and a menuMessage is defined, |
|
472 |
ask model for the menu and launch that if non-nil. |
|
473 |
" |
|
474 |
(menuHolder notNil |
|
475 |
and:[(sym := view menuMessage) notNil |
|
476 |
and:[sym isSymbol]]) ifTrue:[ |
|
477 |
" |
|
478 |
ask model for the menu |
|
479 |
" |
|
480 |
^ menuHolder perform:sym. |
|
153 | 481 |
]. |
245 | 482 |
^ nil |
0 | 483 |
! ! |
245 | 484 |
|
252 | 485 |
!Controller class methodsFor:'documentation'! |
486 |
||
487 |
version |
|
612 | 488 |
^ '$Header: /cvs/stx/stx/libview/Controller.st,v 1.34 1996-04-25 16:35:00 cg Exp $' |
252 | 489 |
! ! |