* The action uses this to know when those fields have lost focus, so it can cancel the action. - * + * * @param listener the listener */ protected abstract void addInputFocusListener(FocusListener listener); /** * Add the given key listener to your input field(s) - * + * *
* The listener handles Escape and Enter, canceling or accepting the input, respectively. - * + * * @param listener the listener */ protected abstract void addInputKeyListener(KeyListener listener); /** * If needed, add your layout listeners to this action's layout manager - * + * *
* If there are additional components that need to move, e.g., when the panel is scrolled, then * you need a layout listener. If this is overridden, then * {@link #removeLayoutListeners(FieldPanelOverLayoutManager)} must also be overridden. - * + * * @param fieldLayoutManager the layout manager */ protected void addLayoutListeners(FieldPanelOverLayoutManager fieldLayoutManager) { @@ -140,7 +140,7 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Remove your layout listeners from this action's layout manager - * + * * @see #addLayoutListeners(FieldPanelOverLayoutManager) */ protected void removeLayoutListeners(FieldPanelOverLayoutManager fieldLayoutManager) { @@ -149,17 +149,17 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Set your input field(s) font to the given one - * + * *
* This ensures your field's font matches the listing over which it is placed. - * + * * @param font the listing's base font */ protected abstract void setInputFont(Font font); /** * Get the program on which this action was invoked - * + * * @return the current program */ protected Program getProgram() { @@ -168,7 +168,7 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Get the code unit on which this action was invoked - * + * * @return the current code unit */ protected CodeUnit getCodeUnit() { @@ -177,7 +177,7 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Get the address at which this action was invoked - * + * * @return the current address */ protected Address getAddress() { @@ -217,7 +217,7 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Invoked when the user presses Enter - * + * *
* This should validate the user's input and complete the action. If the action is completed * successfully, then call {@link #hide()}. Note that the Enter key can be ignored by doing @@ -228,7 +228,7 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Hide the input field(s) - * + * *
* This removes any components added to the listing's field panel, usually via * {@link #showInputs(FieldPanel)}, and returns focus to the listing. If other components were @@ -242,7 +242,7 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Cancel the current patch action - * + * *
* This hides the input field(s) without completing the action. */ @@ -252,12 +252,12 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Locate a listing field by name and address - * + * *
* Generally, this is used in {@link #showInputs(FieldPanel)} to find constraints suitable for * use in {@link Container#add(Component, Object)} on the passed {@code fieldPanel}. Likely, the * address should be obtained from {@link #getAddress()}. - * + * * @param address the address for the line (row) in the listing * @param fieldName the column name for the field in the listing * @return if found, the field location, or null @@ -278,7 +278,7 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Check if the action is applicable to the given code unit - * + * * @param unit the code unit at the user's cursor * @return true if applicable, false if not */ @@ -327,12 +327,11 @@ public abstract class AbstractPatchAction extends DockingAction { /** * Put the input fields in their place, show them, and place focus appropriately - * + * *
* Use {{@link #findFieldLocation(Address, String)} to locate fields in the listing and place * your inputs over them. - * - * @param address the address of the user's cursor + * * @param fieldPanel the currently-focused listing field panel * @return false if inputs could not be placed and shown */ @@ -349,7 +348,13 @@ public abstract class AbstractPatchAction extends DockingAction { } ListingActionContext lac = (ListingActionContext) context; - if (((CodeViewerProvider) lac.getComponentProvider()).isReadOnly()) { + ComponentProvider provider = lac.getComponentProvider(); + if (!(provider instanceof CodeViewerProvider)) { + return null; + } + + CodeViewerProvider codeViewProvider = (CodeViewerProvider) provider; + if (codeViewProvider.isReadOnly()) { return null; } return lac.getCodeUnit();