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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

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1+/*
2+ * Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+package javax.swing.plaf.basic;
26+
27+import java.awt.*;
28+import java.awt.event.KeyEvent;
29+import java.awt.event.FocusEvent;
30+import java.awt.event.InputEvent;
31+import java.beans.PropertyChangeEvent;
32+import java.io.Reader;
33+import javax.swing.*;
34+import javax.swing.border.*;
35+import javax.swing.event.*;
36+import javax.swing.text.*;
37+import javax.swing.plaf.*;
38+import sun.swing.DefaultLookup;
39+
40+/**
41+ * Basis of a look and feel for a JTextField.
42+ * <p>
43+ * <strong>Warning:</strong>
44+ * Serialized objects of this class will not be compatible with
45+ * future Swing releases. The current serialization support is
46+ * appropriate for short term storage or RMI between applications running
47+ * the same version of Swing. As of 1.4, support for long term storage
48+ * of all JavaBeans<sup><font size="-2">TM</font></sup>
49+ * has been added to the <code>java.beans</code> package.
50+ * Please see {@link java.beans.XMLEncoder}.
51+ *
52+ * @author Timothy Prinzing
53+ */
54+public class BasicTextFieldUI extends BasicTextUI {
55+
56+ /**
57+ * Creates a UI for a JTextField.
58+ *
59+ * @param c the text field
60+ * @return the UI
61+ */
62+ public static ComponentUI createUI(JComponent c) {
63+ return new BasicTextFieldUI();
64+ }
65+
66+ /**
67+ * Creates a new BasicTextFieldUI.
68+ */
69+ public BasicTextFieldUI() {
70+ super();
71+ }
72+
73+ /**
74+ * Fetches the name used as a key to lookup properties through the
75+ * UIManager. This is used as a prefix to all the standard
76+ * text properties.
77+ *
78+ * @return the name ("TextField")
79+ */
80+ protected String getPropertyPrefix() {
81+ return "TextField";
82+ }
83+
84+ /**
85+ * Creates a view (FieldView) based on an element.
86+ *
87+ * @param elem the element
88+ * @return the view
89+ */
90+ public View create(Element elem) {
91+ Document doc = elem.getDocument();
92+ Object i18nFlag = doc.getProperty("i18n"/*AbstractDocument.I18NProperty*/);
93+ if (Boolean.TRUE.equals(i18nFlag)) {
94+ // To support bidirectional text, we build a more heavyweight
95+ // representation of the field.
96+ String kind = elem.getName();
97+ if (kind != null) {
98+ if (kind.equals(AbstractDocument.ContentElementName)) {
99+ return new GlyphView(elem);
100+ } else if (kind.equals(AbstractDocument.ParagraphElementName)) {
101+ return new I18nFieldView(elem);
102+ }
103+ }
104+ // this shouldn't happen, should probably throw in this case.
105+ }
106+ return new FieldView(elem);
107+ }
108+
109+ /**
110+ * Returns the baseline.
111+ *
112+ * @throws NullPointerException {@inheritDoc}
113+ * @throws IllegalArgumentException {@inheritDoc}
114+ * @see javax.swing.JComponent#getBaseline(int, int)
115+ * @since 1.6
116+ */
117+ public int getBaseline(JComponent c, int width, int height) {
118+ super.getBaseline(c, width, height);
119+ View rootView = getRootView((JTextComponent)c);
120+ if (rootView.getViewCount() > 0) {
121+ Insets insets = c.getInsets();
122+ height = height - insets.top - insets.bottom;
123+ if (height > 0) {
124+ int baseline = insets.top;
125+ View fieldView = rootView.getView(0);
126+ int vspan = (int)fieldView.getPreferredSpan(View.Y_AXIS);
127+ if (height != vspan) {
128+ int slop = height - vspan;
129+ baseline += slop / 2;
130+ }
131+ if (fieldView instanceof I18nFieldView) {
132+ int fieldBaseline = BasicHTML.getBaseline(
133+ fieldView, width - insets.left - insets.right,
134+ height);
135+ if (fieldBaseline < 0) {
136+ return -1;
137+ }
138+ baseline += fieldBaseline;
139+ }
140+ else {
141+ FontMetrics fm = c.getFontMetrics(c.getFont());
142+ baseline += fm.getAscent();
143+ }
144+ return baseline;
145+ }
146+ }
147+ return -1;
148+ }
149+
150+ /**
151+ * Returns an enum indicating how the baseline of the component
152+ * changes as the size changes.
153+ *
154+ * @throws NullPointerException {@inheritDoc}
155+ * @see javax.swing.JComponent#getBaseline(int, int)
156+ * @since 1.6
157+ */
158+ public Component.BaselineResizeBehavior getBaselineResizeBehavior(
159+ JComponent c) {
160+ super.getBaselineResizeBehavior(c);
161+ return Component.BaselineResizeBehavior.CENTER_OFFSET;
162+ }
163+
164+
165+ /**
166+ * A field view that support bidirectional text via the
167+ * support provided by ParagraphView.
168+ */
169+ static class I18nFieldView extends ParagraphView {
170+
171+ I18nFieldView(Element elem) {
172+ super(elem);
173+ }
174+
175+ /**
176+ * Fetch the constraining span to flow against for
177+ * the given child index. There is no limit for
178+ * a field since it scrolls, so this is implemented to
179+ * return <code>Integer.MAX_VALUE</code>.
180+ */
181+ public int getFlowSpan(int index) {
182+ return Integer.MAX_VALUE;
183+ }
184+
185+ protected void setJustification(int j) {
186+ // Justification is done in adjustAllocation(), so disable
187+ // ParagraphView's justification handling by doing nothing here.
188+ }
189+
190+ static boolean isLeftToRight( java.awt.Component c ) {
191+ return c.getComponentOrientation().isLeftToRight();
192+ }
193+
194+ /**
195+ * Adjusts the allocation given to the view
196+ * to be a suitable allocation for a text field.
197+ * If the view has been allocated more than the
198+ * preferred span vertically, the allocation is
199+ * changed to be centered vertically. Horizontally
200+ * the view is adjusted according to the horizontal
201+ * alignment property set on the associated JTextField
202+ * (if that is the type of the hosting component).
203+ *
204+ * @param a the allocation given to the view, which may need
205+ * to be adjusted.
206+ * @return the allocation that the superclass should use.
207+ */
208+ Shape adjustAllocation(Shape a) {
209+ if (a != null) {
210+ Rectangle bounds = a.getBounds();
211+ int vspan = (int) getPreferredSpan(Y_AXIS);
212+ int hspan = (int) getPreferredSpan(X_AXIS);
213+ if (bounds.height != vspan) {
214+ int slop = bounds.height - vspan;
215+ bounds.y += slop / 2;
216+ bounds.height -= slop;
217+ }
218+
219+ // horizontal adjustments
220+ Component c = getContainer();
221+ if (c instanceof JTextField) {
222+ JTextField field = (JTextField) c;
223+ BoundedRangeModel vis = field.getHorizontalVisibility();
224+ int max = Math.max(hspan, bounds.width);
225+ int value = vis.getValue();
226+ int extent = Math.min(max, bounds.width - 1);
227+ if ((value + extent) > max) {
228+ value = max - extent;
229+ }
230+ vis.setRangeProperties(value, extent, vis.getMinimum(),
231+ max, false);
232+ if (hspan < bounds.width) {
233+ // horizontally align the interior
234+ int slop = bounds.width - 1 - hspan;
235+
236+ int align = ((JTextField)c).getHorizontalAlignment();
237+ if(isLeftToRight(c)) {
238+ if(align==LEADING) {
239+ align = LEFT;
240+ }
241+ else if(align==TRAILING) {
242+ align = RIGHT;
243+ }
244+ }
245+ else {
246+ if(align==LEADING) {
247+ align = RIGHT;
248+ }
249+ else if(align==TRAILING) {
250+ align = LEFT;
251+ }
252+ }
253+
254+ switch (align) {
255+ case SwingConstants.CENTER:
256+ bounds.x += slop / 2;
257+ bounds.width -= slop;
258+ break;
259+ case SwingConstants.RIGHT:
260+ bounds.x += slop;
261+ bounds.width -= slop;
262+ break;
263+ }
264+ } else {
265+ // adjust the allocation to match the bounded range.
266+ bounds.width = hspan;
267+ bounds.x -= vis.getValue();
268+ }
269+ }
270+ return bounds;
271+ }
272+ return null;
273+ }
274+
275+ /**
276+ * Update the visibility model with the associated JTextField
277+ * (if there is one) to reflect the current visibility as a
278+ * result of changes to the document model. The bounded
279+ * range properties are updated. If the view hasn't yet been
280+ * shown the extent will be zero and we just set it to be full
281+ * until determined otherwise.
282+ */
283+ void updateVisibilityModel() {
284+ Component c = getContainer();
285+ if (c instanceof JTextField) {
286+ JTextField field = (JTextField) c;
287+ BoundedRangeModel vis = field.getHorizontalVisibility();
288+ int hspan = (int) getPreferredSpan(X_AXIS);
289+ int extent = vis.getExtent();
290+ int maximum = Math.max(hspan, extent);
291+ extent = (extent == 0) ? maximum : extent;
292+ int value = maximum - extent;
293+ int oldValue = vis.getValue();
294+ if ((oldValue + extent) > maximum) {
295+ oldValue = maximum - extent;
296+ }
297+ value = Math.max(0, Math.min(value, oldValue));
298+ vis.setRangeProperties(value, extent, 0, maximum, false);
299+ }
300+ }
301+
302+ // --- View methods -------------------------------------------
303+
304+ /**
305+ * Renders using the given rendering surface and area on that surface.
306+ * The view may need to do layout and create child views to enable
307+ * itself to render into the given allocation.
308+ *
309+ * @param g the rendering surface to use
310+ * @param a the allocated region to render into
311+ *
312+ * @see View#paint
313+ */
314+ public void paint(Graphics g, Shape a) {
315+ Rectangle r = (Rectangle) a;
316+ g.clipRect(r.x, r.y, r.width, r.height);
317+ super.paint(g, adjustAllocation(a));
318+ }
319+
320+ /**
321+ * Determines the resizability of the view along the
322+ * given axis. A value of 0 or less is not resizable.
323+ *
324+ * @param axis View.X_AXIS or View.Y_AXIS
325+ * @return the weight -> 1 for View.X_AXIS, else 0
326+ */
327+ public int getResizeWeight(int axis) {
328+ if (axis == View.X_AXIS) {
329+ return 1;
330+ }
331+ return 0;
332+ }
333+
334+ /**
335+ * Provides a mapping from the document model coordinate space
336+ * to the coordinate space of the view mapped to it.
337+ *
338+ * @param pos the position to convert >= 0
339+ * @param a the allocated region to render into
340+ * @return the bounding box of the given position
341+ * @exception BadLocationException if the given position does not
342+ * represent a valid location in the associated document
343+ * @see View#modelToView
344+ */
345+ public Shape modelToView(int pos, Shape a, Position.Bias b) throws BadLocationException {
346+ return super.modelToView(pos, adjustAllocation(a), b);
347+ }
348+
349+ /**
350+ * Provides a mapping from the document model coordinate space
351+ * to the coordinate space of the view mapped to it.
352+ *
353+ * @param p0 the position to convert >= 0
354+ * @param b0 the bias toward the previous character or the
355+ * next character represented by p0, in case the
356+ * position is a boundary of two views.
357+ * @param p1 the position to convert >= 0
358+ * @param b1 the bias toward the previous character or the
359+ * next character represented by p1, in case the
360+ * position is a boundary of two views.
361+ * @param a the allocated region to render into
362+ * @return the bounding box of the given position is returned
363+ * @exception BadLocationException if the given position does
364+ * not represent a valid location in the associated document
365+ * @exception IllegalArgumentException for an invalid bias argument
366+ * @see View#viewToModel
367+ */
368+ public Shape modelToView(int p0, Position.Bias b0,
369+ int p1, Position.Bias b1, Shape a)
370+ throws BadLocationException
371+ {
372+ return super.modelToView(p0, b0, p1, b1, adjustAllocation(a));
373+ }
374+
375+ /**
376+ * Provides a mapping from the view coordinate space to the logical
377+ * coordinate space of the model.
378+ *
379+ * @param fx the X coordinate >= 0.0f
380+ * @param fy the Y coordinate >= 0.0f
381+ * @param a the allocated region to render into
382+ * @return the location within the model that best represents the
383+ * given point in the view
384+ * @see View#viewToModel
385+ */
386+ public int viewToModel(float fx, float fy, Shape a, Position.Bias[] bias) {
387+ return super.viewToModel(fx, fy, adjustAllocation(a), bias);
388+ }
389+
390+ /**
391+ * Gives notification that something was inserted into the document
392+ * in a location that this view is responsible for.
393+ *
394+ * @param changes the change information from the associated document
395+ * @param a the current allocation of the view
396+ * @param f the factory to use to rebuild if the view has children
397+ * @see View#insertUpdate
398+ */
399+ public void insertUpdate(DocumentEvent changes, Shape a, ViewFactory f) {
400+ super.insertUpdate(changes, adjustAllocation(a), f);
401+ updateVisibilityModel();
402+ }
403+
404+ /**
405+ * Gives notification that something was removed from the document
406+ * in a location that this view is responsible for.
407+ *
408+ * @param changes the change information from the associated document
409+ * @param a the current allocation of the view
410+ * @param f the factory to use to rebuild if the view has children
411+ * @see View#removeUpdate
412+ */
413+ public void removeUpdate(DocumentEvent changes, Shape a, ViewFactory f) {
414+ super.removeUpdate(changes, adjustAllocation(a), f);
415+ updateVisibilityModel();
416+ }
417+
418+ }
419+
420+}