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Eclipse JDT
Release 3.0

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org.eclipse.jdt.ui.wizards
Class NewContainerWizardPage

java.lang.Object
  org.eclipse.jface.dialogs.DialogPage
      org.eclipse.jface.wizard.WizardPage
          org.eclipse.jdt.ui.wizards.NewElementWizardPage
              org.eclipse.jdt.ui.wizards.NewContainerWizardPage

All Implemented Interfaces:

IDialogPage, IMessageProvider, IWizardPage

Direct Known Subclasses:

NewPackageWizardPage, NewTypeWizardPage

public abstract class NewContainerWizardPage

extends NewElementWizardPage

Wizard page that acts as a base class for wizard pages that create new Java elements. The class provides a input field for source folders (called container in this class) and API to validate the enter source folder name.

Since:

2.0

Field Summary

protected static String	CONTAINER Id of the container field
protected IStatus	fContainerStatus The status of the last validation.

Fields inherited from interface org.eclipse.jface.dialogs.IMessageProvider

ERROR, INFORMATION, NONE, WARNING

Constructor Summary

NewContainerWizardPage(String name)
Create a new NewContainerWizardPage

Method Summary

protected IStatus	containerChanged() This method is a hook which gets called after the source folder's text input field has changed.
protected void	createContainerControls(Composite parent, int nColumns) Creates the necessary controls (label, text field and browse button) to edit the source folder location.
protected ITextSelection	getCurrentTextSelection() Returns the test selection of the current editor.
protected IJavaElement	getInitialJavaElement(IStructuredSelection selection) Utility method to inspect a selection to find a Java element.
protected int	getMaxFieldWidth() Returns the recommended maximum width for text fields (in pixels).
IPackageFragmentRoot	getPackageFragmentRoot() Returns the IPackageFragmentRoot that corresponds to the current value of the source folder field.
String	getPackageFragmentRootText() Returns the current text of source folder text field.
protected IWorkspaceRoot	getWorkspaceRoot() Returns the workspace root.
protected void	handleFieldChanged(String fieldName) Hook method that gets called when a field on this page has changed.
protected void	initContainerPage(IJavaElement elem) Initializes the source folder field with a valid package fragment root.
protected void	setFocusOnContainer() Sets the focus to the source folder's text field.
void	setPackageFragmentRoot(IPackageFragmentRoot root, boolean canBeModified) Sets the current source folder (model and text field) to the given package fragment root.

Methods inherited from class org.eclipse.jdt.ui.wizards.NewElementWizardPage

setVisible, updateStatus, updateStatus

Methods inherited from class org.eclipse.jface.wizard.WizardPage

canFlipToNextPage, getContainer, getDialogSettings, getImage, getName, getNextPage, getPreviousPage, getShell, getWizard, isCurrentPage, isPageComplete, setDescription, setErrorMessage, setImageDescriptor, setMessage, setPageComplete, setPreviousPage, setTitle, setWizard, toString

Methods inherited from class org.eclipse.jface.dialogs.DialogPage

convertHeightInCharsToPixels, convertHorizontalDLUsToPixels, convertVerticalDLUsToPixels, convertWidthInCharsToPixels, dispose, getControl, getDescription, getDialogFontName, getErrorMessage, getFont, getMessage, getMessageType, getTitle, getToolTipText, initializeDialogUnits, isControlCreated, performHelp, setButtonLayoutData, setControl, setMessage

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.eclipse.jface.dialogs.IDialogPage

createControl, dispose, getControl, getDescription, getErrorMessage, getMessage, getTitle, performHelp

Field Detail

CONTAINER

protected static final String CONTAINER

Id of the container field

See Also:

Constant Field Values

fContainerStatus

protected IStatus fContainerStatus

The status of the last validation.

Constructor Detail

NewContainerWizardPage

public NewContainerWizardPage(String name)

Create a new NewContainerWizardPage

Parameters:

name - the wizard page's name

Method Detail

initContainerPage

protected void initContainerPage(IJavaElement elem)

Initializes the source folder field with a valid package fragment root. The package fragment root is computed from the given Java element.

Parameters:

elem - the Java element used to compute the initial package fragment root used as the source folder

getInitialJavaElement

protected IJavaElement getInitialJavaElement(IStructuredSelection selection)

Utility method to inspect a selection to find a Java element.

Parameters:

selection - the selection to be inspected

Returns:

a Java element to be used as the initial selection, or null, if no Java element exists in the given selection

getCurrentTextSelection

protected ITextSelection getCurrentTextSelection()

Returns the test selection of the current editor. null is returned when the current editor does not have focus or does not return a text selection.

Returns:

Returns the test selection of the current editor or null.

Since:

3.0

getMaxFieldWidth

protected int getMaxFieldWidth()

Returns the recommended maximum width for text fields (in pixels). This method requires that createContent has been called before this method is call. Subclasses may override to change the maximum width for text fields.

Returns:

the recommended maximum width for text fields.

createContainerControls

protected void createContainerControls(Composite parent,
                                       int nColumns)

Creates the necessary controls (label, text field and browse button) to edit the source folder location. The method expects that the parent composite uses a GridLayout as its layout manager and that the grid layout has at least 3 columns.

Parameters:

parent - the parent composite

nColumns - the number of columns to span. This number must be greater or equal three

setFocusOnContainer

protected void setFocusOnContainer()

Sets the focus to the source folder's text field.

containerChanged

protected IStatus containerChanged()

This method is a hook which gets called after the source folder's text input field has changed. This default implementation updates the model and returns an error status. The underlying model is only valid if the returned status is OK.

Returns:

the model's error status

handleFieldChanged

protected void handleFieldChanged(String fieldName)

Hook method that gets called when a field on this page has changed. For this page the method gets called when the source folder field changes.

Every sub type is responsible to call this method when a field on its page has changed. Subtypes override (extend) the method to add verification when a own field has a dependency to an other field. For example the class name input must be verified again when the package field changes (check for duplicated class names).

Parameters:

fieldName - The name of the field that has changed (field id). For the source folder the field id is CONTAINER

getWorkspaceRoot

protected IWorkspaceRoot getWorkspaceRoot()

Returns the workspace root.

Returns:

the workspace root

getPackageFragmentRoot

public IPackageFragmentRoot getPackageFragmentRoot()

Returns the IPackageFragmentRoot that corresponds to the current value of the source folder field.

Returns:

the IPackageFragmentRoot or null if the current source folder value is not a valid package fragment root

getPackageFragmentRootText

public String getPackageFragmentRootText()

Returns the current text of source folder text field.

Returns:

the text of the source folder text field

setPackageFragmentRoot

public void setPackageFragmentRoot(IPackageFragmentRoot root,
                                   boolean canBeModified)

Sets the current source folder (model and text field) to the given package fragment root.

Parameters:

root - The new root.

canBeModified - if false the source folder field can not be changed by the user. If true the field is editable