Specification: This method is called when the break button is clicked and this tab is the active tab.
Default implementation: By default, breaks any evaluation that may be happening at this point.Specification: This method is called to determine if it is okay to close this tab.
Default implementation: Calls the definitions text’s and interactions text’s can-close? method.Disables the Run button, and the Run menu item and locks the interactions window, and the definitions window.Enables the Run button, and the Run menu item and unlocks (via the lock method) the interactions window and the definitions window.This text is initially the top half of the DrRacket window and contains the users program.This is the directory that the file is saved in, or the directory DrRacket started up in, if the file has not been saved.Indicates if evaluation is currently enabled in this tab. Evaluation is typically disabled when some evaluation is already running (in another thread).Returns the frame that this tab is inside.This text is initially the bottom half of the DrRacket window and contains the users interactions with the REPL.Indicates if this tab is the currently active tab.Indicates if the running message in the bottom right of DrRacket’s frame should be “running” or “not running” when this frame is active.Specification: This method is called when the tab is closed.
(send a-drracket:unit:tab set-breakables thread custodian) → void? thread : (or/c thread? false/c) custodian : (or/c custodian? false/c)This method is final, so it cannot be overridden.Sets the color of the circle in the bottom-right corner of the DrRacket window to color with the tooltip window that appears over it containing label. If multiple colors are registered they are all shown.See also remove-bkg-running-color.This method is final, so it cannot be overridden.Removes the color and label added with id.See also add-bkg-running-color.This method is final, so it cannot be overridden.Called by the system to indicate that the tab has just been switched to from another tab in the same frame (when the frame has the focus) or the frame itself has come to the front (via on-activate) and the tab is the current tab in that frame.This method updates the private state that get-last-touched returns.This method is final, so it cannot be overridden.Returns the time that this tab was last focused, as counted by current-inexact-milliseconds.
→ (is-a?/c drracket:unit:tab%)Clears any error highlighting; calls clear-annotations.
(send a-drracket:unit:program-editor after-delete start len) → void? start : number len : numberCalls the inner method.
Resets an error highlighting.
(send a-drracket:unit:program-editor after-insert start len) → void? start : number len : numberCalls the inner method.
Resets an error highlighting.
→ (is-a?/c drracket:unit:interactions-canvas%)Passes all arguments to super-init.
Passes all arguments to super-init.Adds the “Show Definitions”, “Show Interactions” and “Show Contour” menu items.Specification: This method is called when the user clicks on the break button or chooses the break menu item.
Default implementation: Breaks the user’s evaluation started by the Run button (or possibly a queued callback in the user’s eventspace).Loads this file into this already created frame. In normal DrRacket use, this method is only called if this is the first frame opened and no editing has occurred. It should be safe to call this at anytime, however.
→ (or/c (is-a?/c drracket:unit:tab%) #f) p : path-string?Returns the tab that is currently editing p, if there is one in this frame. Returns #f otherwise.Makes tab visible in this frame.Adds the "Split" and "Collapse" menu items.Specification: This method is called when the user clicks on the Run button or chooses the Run menu item.
Default implementation: It calls ensure-rep-shown and then it calls evaluate-from-port passing in the result of get-interactions-text and its entire range, unless the first two characters are #! in which case, it skips the first line.Calls the super method and adds a separator-menu-item% to the menu.Adds a menu item for printing the interactions.Adds a submenu that contains various save options:
save definitions as text
save interactions as
save interactions as text
and adds a separator item.returns "Definitions"Returns "Definitions".Returns "Definitions".Returns the break button. Mostly used for test suites.This panel goes along the top of the DrRacket window and has buttons for important actions the user frequently executes.
A tool can add a button to this panel to make some new functionality easily accessible to the user.
See also mrlib’s switchable-button%.Returns the result of get-definitions-canvas.Returns the result of drracket:get/extend:get-definitions-canvas.
→ (is-a?/c vertical-panel%) (send a-drracket:unit:frame get-definitions/interactions-panel-parent) → void?Specification: This method is provided so that tools can add area-container<%>s to the DrRacket frame. Override this method so that it returns a child of the super-classes’s result and insert new children in between.
Default implementation: First case:
Returns the result of get-area-container
Second case:Returns the result of get-definitions-text.Returns the result of drracket:get/extend:get-definitions-text.Returns the Run button. Mostly used for test suites.returns the text that is active in the last canvas passed to make-searchable
canvas : (is-a?/c drracket:unit:interactions-canvas%)stores the canvas, until get-text-to-search is called.
Always calls the inner method.Updates the preferences for the window width and height so next time a DrRacket window is opened, it will be this width and height.Specification: determines if the definitions window has not been modified. Used in conjunction with change-to-file.
Default implementation: Returns #t if the buffer is empty, it has not been saved and it is unmodified.This method hides or shows the save button, based on the modified? argument.
If the save button has not been created yet, it remembers the modified? argument as an initial visibility for the save button.
This method is called by the set-modified method.Updates the save message on the DrRacket frame. This method is called by the set-filename method.Updates the interactions, definitions, and contour menu items based on the contents of the windows.
Returns the language-specific menu. This menu is called the Racket menu in the Racket language but is, in general, controlled by the 'drscheme:language-menu-title capability (see drracket:language:register-capability for details on capabilities).Ensures that the definitions window is visible.Makes sure the rep is hidden (by making the definitions window visible).
rep : (is-a?/c drracket:rep:text<%>)This method is called to force the rep window to be visible when, for example, an error message is put into the rep. Also ensures that the appropriate tab is visible, if necessary.Returns the currently active tab.Returns a string naming the file in the ith tab or, if the file is not saved, something like “Untitled”.Returns the number of open tabs in the frame.
filename : (or/c path-string? #f)Opens a new tab in this frame. If filename is a path-string?, It loads that file in the definitions window of the new tab.Creates a new tab.Switches to the next tab.Switches to the previous tab.Swaps the current tab with its right-hand neighbor.Swaps the current tab with its left-hand neighbor.
tab-order : (listof exact-nonnegative-integer?)Reorders the tabs according to tab-order.
Each element in tab-order identifies a tab by its position in the list get-tabs, and the position of this element identifies the new position of the tab.
For example, considering that there are only 3 tabs open, (send a-drracket-frame reorder-tabs '(2 1 0)) swaps the first and last tabs, leaving the middle one unchanged.This method is final, so it cannot be overridden.Closes the current tab, making some other tab visible. If there is only one tab open, this method does nothing.
→ (is-a?/c drracket:unit:definitions-canvas%)This canvas is the canvas containing the get-definitions-text. It is initially the top half of the DrRacket window.
This canvas defaults to a drracket:unit:definitions-canvas% object, but if you change the drracket:get/extend:extend-definitions-canvas procedure, it will use the class in the parameter to create the canvas.Specification: Returns the Insert menu.
→ (instanceof (derivedfrom drracket:unit:interactions-canvas%))This canvas is the canvas containing the get-interactions-text. It is initially the bottom half of the DrRacket window.Returns the list of tabs in this frame.
(send a-drracket:unit:frame on-tab-change from-tab to-tab) → void? from-tab : (is-a?/c drracket:unit:tab<%>) to-tab : (is-a?/c drracket:unit:tab<%>)Specification: Called after a new tab becomes the selected tab in the frame.
Default implementation: The from-tab argument is the previously selected tab, and the to-tab argument is the newly selected tab.
(send a-drracket:unit:frame register-capability-menu-item key menu) → void? key : symbol menu : (is-a? menu%)Registers the menu item that was most recently added as being controlled by the capability key. This means that the (boolean) value of the capability determines if the menu item is present in the menu (the capability is checked when the menus are clicked on).
This assumes that the menu items in this menu are not moved around, except by the this capability. If they are, things can go funny (i.e., no good checks are in place).
Note that the capability must be registered separately, via drracket:language:register-capability.
(send a-drracket:unit:frame register-toolbar-button tb [ #:number num]) → void? tb : (is-a?/c switchable-button%) num : (or/c #f real?) = #fRegisters the toolbar button tb.
The num argument controls the ordering of tb with respect to other toolbar buttons. If it is #f, then a number one smaller than the currently smallest number is used.
The buttons are sorted by their numbers, from left to right in horizontal mode and from top to bottom in vertical mode. If buttons are in sub-panels they cannot, in general, be sorted entirely by number without changing the panel structure, but when a sub-panel appears as a sibling of some toolbar buttons, the sorting routine looks for the smallest number appearing in a button in the sub-panel, and uses that number when sorting the panel that appears with the buttons.
A number of buttons already come with numbers: the Stop button’s number is 101, the Run button’s number is 100, the Scribble PDF button’s number is 99, the Scribble HTML button’s number is 98, the Macro Stepper button’s number is 70, the Debug button’s number is 60, the Stepper button’s number is 59, and the Check Syntax button’s number is 50.
All three are children of the panel returned by get-button-panel.
Registration is required so that the toolbar buttons properly switch orientation when the toolbar’s position is moved and the ordering via the number argument is preserved. See also sort-toolbar-buttons-panel.
(send a-drracket:unit:frame register-toolbar-buttons tbs [ #:numbers nums]) → void? tbs : (listof (is-a?/c switchable-button%)) nums : (listof (or/c real? #f)) = (make-list (length tbs) #f)Simultaneously registers the toolbar buttons tbs.
See also register-toolbar-button.
→ void? tb : (is-a?/c switchable-button%)Unregisters the toolbar button tb. Use this method to ensure that the button is not referenced by this frame and thus can be gc’d.
→ void? language-settings : language-settingsSpecification: Called when the next settings changes. See also get-next-settings.
Default implementation:Augment this method to be notified when DrRacket is changing the buffer to insert metadata. The metadata is only inserted during saving, so tools that track changes to DrRacket will need to ignore changes that occur after this method is called, and before end-metadata-changes is called.
A call to begin-metadata-changes will always be followed with a call to end-metadata-changes (ie, the calls cannot be nested).Called when the changes to insert metadata are done, and the editor is back to its state at the time of the call to begin-metadata-changes.
A call to begin-metadata-changes will always be followed with a call to end-metadata-changes (ie, the calls cannot be nested).This method returns the language-settings that will be used when the user next clicks Run in this DrRacket window.Returns the editor’s enclosing tab.Specification: This method, when called, puts this DrRacket window in a state such that interactions submitted to the REPL will trigger a yellow warning message. The state is reset when the program is next Run.
Default implementation: Records msg and uses it the next time the user submits an interaction (unless the Runs first).
(send a-drracket:unit:definitions-text set-next-settings language-settings [ update-prefs?]) → void? language-settings : language-settings update-prefs? : any/c = #tChanges the language settings for this window. If update-prefs? is a true value, the preference is changed, which affects newly created windows.
(send a-drracket:unit:definitions-text set-filename filename [ temporary?]) → void? filename : (or/c path-string? #f) temporary? : any/c = #fThe class that is the result of (get-drracket:unit:definitions-text%) overrides this method and calls update-save-message.The class that is the result of (get-drracket:unit:definitions-text%) overrides this method and calls update-save-button.
(and/c (instanceof/c racket:text<%>) (instanceof/c text:info%) (implementation?/c drracket:unit:definitions-text<%>))
→ ((subclass?/c text%) . -> . (subclass?/c text%))
mixin : ((subclass?/c text%) . -> . (subclass?/c text%))
(drracket:unit:open-drscheme-window [ filename #:show? show?]) → (is-a?/c drracket:unit:frame%) filename : (or/c string? #f) = #f show? : boolean? = #t
(drracket:unit:add-search-help-desk-menu-item text menu position [ add-sep]) → void? text : (is-a?/c text%) menu : (is-a?/c menu-item-container<%>) position : exact-nonnegative-integer? add-sep : (-> any) = void
(struct drracket:unit:teachpack-callbacks ( get-names add remove remove-all) #:extra-constructor-name make-drracket:unit:teachpack-callbacks) get-names : (-> any/c (listof string?)) add : (-> any/c path-string? any/c) remove : (-> path-string? any/c any/c) remove-all : (-> any/c any/c)
Each of the any/cs that appear in the field contracts are actually the settings of a language.
text : (is-a?/c text%) pos : exact-nonnegative-integer?
This is intended to be used with the “f1” keybinding for searching in the documentation, so the result is not always a symbol, but instead a best effort to find something that is likely to be useful to search for around a point in the text.