"

jv:vdb - Visual / VM Debugger

Copyright (C) 2015-now Jan Vrany

This software is licensed under 'Creative Commons Attribution-NonCommercial 4.0 International License'

You may find a full license text in LICENSE.txt or at http://creativecommons.org/licenses/by-nc/4.0/

"

"{ Package: 'jv:vdb' }"

"{ NameSpace: Smalltalk }"

TextCollector subclass:#VDBSimpleConsoleView

	instanceVariableNames:'buffer bufferPosition history historyPosition completeAction

		lastTabTime lastCompletions'

	classVariableNames:'TabTabInterval'

	poolDictionaries:''

	category:'VDB-UI-Console'

!

!VDBSimpleConsoleView class methodsFor:'documentation'!

copyright

"

jv:vdb - Visual / VM Debugger

Copyright (C) 2015-now Jan Vrany

This software is licensed under 'Creative Commons Attribution-NonCommercial 4.0 International License'

You may find a full license text in LICENSE.txt or at http://creativecommons.org/licenses/by-nc/4.0/

"

! !

!VDBSimpleConsoleView class methodsFor:'initialization'!

initialize

    "Invoked at system start or when the class is dynamically loaded."

    "/ please change as required (and remove this comment)

    TabTabInterval := 500"ms"

    "Modified: / 25-01-2019 / 21:38:58 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!VDBSimpleConsoleView methodsFor:'accessing'!

completeAction

    ^ completeAction

!

completeAction:aBlock

    completeAction := aBlock.

! !

!VDBSimpleConsoleView methodsFor:'actions'!

buffer: aString

    "Set the line buffer, position the cursor at the end of

     line"

    | line |

    line := list at: cursorLine.

    line := (line copyTo: cursorCol - bufferPosition) , aString.

    list at: cursorLine put: line.

    buffer := aString.

    bufferPosition := aString size + 1.

    self cursorCol: line size + 1.

    self invalidateLine: cursorLine.

    "Created: / 26-01-2019 / 22:16:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

completions: anArray"of Strings"

    "Should be called by application when completions are computed."

    | completion |

    lastCompletions := anArray.

    lastCompletions isEmptyOrNil ifTrue:[

        lastCompletions := nil.

        self flash: (resources string:'Nothing to complete').

        ^self.

    ].

    completion := lastCompletions longestCommonPrefix copyFrom: bufferPosition.

    completion isEmpty ifTrue:[ 

        self flash: (resources string:'Ambiguous')

    ] ifFalse:[

        buffer := (buffer copyTo: bufferPosition - 1) , completion , (buffer copyFrom: bufferPosition).

        self insertStringAtCursor: completion.

        bufferPosition := bufferPosition + completion size.

    ]

    "Created: / 25-01-2019 / 21:50:41 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

completionsShow

    "Shows completion candidates"

    | currentColNr currentLineNr currentLine  |

    lastCompletions isEmptyOrNil ifTrue:[ ^ self ].

    currentColNr := cursorCol.

    currentLineNr := cursorLine.

    currentLine := self list at: currentLineNr.

    self cr.

    lastCompletions do:[:each |

        self showCR: each.

    ].

    self nextPutAll: currentLine.

    self cursorCol: currentColNr.

    "Created: / 25-01-2019 / 21:56:26 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

historyDown

    ((historyPosition + 1) between: 1 and: history size) ifTrue:[ 

        historyPosition := historyPosition + 1.

        self buffer: (history at: historyPosition)

    ] ifFalse:[

        historyPosition := history size + 1.

        self buffer: ''.

    ].

    "Created: / 26-01-2019 / 22:21:23 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

historyUp

    ((historyPosition - 1) between: 1 and: history size) ifTrue:[ 

        historyPosition := historyPosition - 1.

        self buffer: (history at: historyPosition)

    ] ifFalse:[

        self beep.

    ].

    "Created: / 26-01-2019 / 22:21:08 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!VDBSimpleConsoleView methodsFor:'cursor handling'!

cursorMovementAllowed

    ^ false

    "Created: / 25-01-2019 / 09:40:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!VDBSimpleConsoleView methodsFor:'event handling'!

extendSelectionToX:x y:y setPrimarySelection:aBoolean

    | savCursorLine savCursorCol |

    savCursorLine := cursorLine.

    savCursorCol := cursorCol.        

    super extendSelectionToX:x y:y setPrimarySelection:aBoolean.

    self cursorLine:savCursorLine col:savCursorCol.

    "Created: / 26-01-2019 / 23:00:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPress: key x: x y: y

    key == #Tab ifTrue:[ 

        self keyPressTab.

        ^ self

    ] ifFalse:[ 

        lastTabTime := lastCompletions := nil.

    ].

    key isCharacter ifTrue:[

        buffer := (buffer copyTo:bufferPosition-1)

                      , key

                      , (buffer copyFrom:bufferPosition).

        self insertCharAtCursor:key.

        bufferPosition := bufferPosition + 1. 

        ^ self

    ].

    key == #Return ifTrue:[ 

        self keyPressReturn.

        ^ self.

    ].

    key == #BackSpace ifTrue:[ 

        self keyPressBackSpace.

        ^ self.

    ].

    key == #Delete ifTrue:[ 

        self keyPressDelete.

        ^ self.

    ].

    key == #CursorLeft ifTrue:[ 

        self keyPressCursorLeft.

        ^ self.

    ].

    key == #CursorRight ifTrue:[ 

        self keyPressCursorRight.

        ^ self.

    ].

    key == #CursorUp ifTrue:[ 

        self keyPressCursorUp.

        ^ self.

    ].

    key == #CursorDown ifTrue:[ 

        self keyPressCursorDown.

        ^ self.

    ].

    ((key == #BeginOfLine) or:[key == #Ctrla]) ifTrue:[ 

        self keyPressBeginOfLine.

        ^ self

    ].

    ((key == #EndOfLine) or:[key == #Ctrle]) ifTrue:[ 

        self keyPressEndOfLine.

        ^ self

    ].

    (#(Shift_L Shift_R 

      Control_L Control_R 

      Alt_L Alt_R 

      Caps_Lock 

      PreviousPage NextPage

      Copy Paste Insert

    ) includes: key) ifTrue:[

         ^ super keyPress: key x:x y:y

    ].

    "/ Unhandled key

    self beep; flash

    "Created: / 24-01-2019 / 22:02:09 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 26-01-2019 / 22:36:57 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressBackSpace

    bufferPosition == 1 ifTrue:[ 

        self beep.

        ^ self.

    ].

    buffer := (buffer copyTo: bufferPosition - 2) , (buffer copyFrom: bufferPosition).

    self deleteCharBeforeCursor.

    bufferPosition := bufferPosition - 1.

    "Created: / 24-01-2019 / 22:09:20 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressBeginOfLine

    self cursorCol: self cursorCol - bufferPosition + 1.

    bufferPosition := 1.

    "Created: / 25-01-2019 / 10:43:49 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressCursorDown

    self historyDown.

    "Created: / 24-01-2019 / 22:18:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 26-01-2019 / 22:19:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressCursorLeft

    (bufferPosition < 2) ifTrue:[ 

        self beep.

        ^ self.

    ].

    bufferPosition := bufferPosition - 1.

    self cursorLeft.

    "Created: / 24-01-2019 / 22:18:57 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 25-01-2019 / 10:29:26 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressCursorRight

    (bufferPosition > buffer size) ifTrue:[ 

        self beep.

        ^ self.

    ].

    bufferPosition := bufferPosition + 1.

    self cursorRight.

    "Created: / 24-01-2019 / 22:19:02 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 25-01-2019 / 10:30:01 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressCursorUp

    self historyUp.

    "Created: / 24-01-2019 / 22:19:08 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 26-01-2019 / 22:19:12 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressDelete

    bufferPosition == (buffer size + 1) ifTrue:[ 

        self beep.

        ^ self.

    ].

    buffer := (buffer copyTo: bufferPosition - 1) , (buffer copyFrom: bufferPosition + 1).

    self deleteCharAtCursor.

    "Created: / 25-01-2019 / 10:33:00 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressEndOfLine

    self cursorCol: self cursorCol - bufferPosition + buffer size + 1.

    bufferPosition := buffer size + 1.

    "Created: / 25-01-2019 / 11:40:33 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressReturn

    acceptAction value: buffer.

    history add: buffer.

    historyPosition := history size + 1.

    self cr.

    buffer := ''.

    bufferPosition := 1.

    "Created: / 24-01-2019 / 22:09:15 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 26-01-2019 / 22:22:53 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

keyPressTab 

    | now |

    "/ No completion installed, do nothing

    completeAction isNil ifTrue:[ 

        self flash: (resources string: 'Command completion not supported').

        ^ self 

    ].

    now := OperatingSystem getMillisecondTime.

    (lastTabTime notNil and:[(now - lastTabTime) < TabTabInterval]) ifTrue:[ 

        "/ Tab Tab has been pressed, show completion history.

        lastTabTime := nil.

        self completionsShow.

    ] ifFalse:[

        "/ A single Tab has been pressed, trigger completion.

        lastTabTime := now.

        completeAction value: (buffer copyTo: bufferPosition - 1)  

    ].

    "Created: / 25-01-2019 / 21:35:23 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 25-01-2019 / 22:38:58 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!VDBSimpleConsoleView methodsFor:'initialization & release'!

initialize

    super initialize.

    buffer := ''.

    bufferPosition := 1.

    history := OrderedCollection new.

    historyPosition := 1.

    "Created: / 24-01-2019 / 22:12:17 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 26-01-2019 / 22:22:29 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!VDBSimpleConsoleView methodsFor:'menu & menu actions'!

copySelection

    | savCursorLine savCursorCol |

    savCursorLine := cursorLine.

    savCursorCol := cursorCol.

    super copySelection.

    self cursorLine:savCursorLine col:savCursorCol.

    "Created: / 26-01-2019 / 22:59:09 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

paste:someText withCR:withCR

    "/ (For now) disallow pasting text with newlines...

    (someText includes: Character cr) ifTrue:[ 

        self beep.

        ^ self.

    ].

    buffer := (buffer copyTo: bufferPosition - 1) , someText , (buffer copyFrom: bufferPosition).

    self insertStringAtCursor: someText.

    bufferPosition := bufferPosition + someText size.

    "Created: / 26-01-2019 / 22:40:44 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!VDBSimpleConsoleView methodsFor:'selections'!

selectWordAtLine:line col:col

    | savCursorLine savCursorCol |

    savCursorLine := cursorLine.

    savCursorCol := cursorCol.

    super selectWordAtLine:line col:col.

    self cursorLine:savCursorLine col:savCursorCol.

    "Created: / 26-01-2019 / 22:55:41 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!VDBSimpleConsoleView methodsFor:'stream messages'!

show:anObject

    super show: anObject.

    self endEntry.

    "Created: / 25-01-2019 / 09:55:16 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!VDBSimpleConsoleView class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'

! !

VDBSimpleConsoleView initialize!