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Added gray background text to authors field to assist newcomers (JabR…
…ef#2147) * Added gray background text to assist newcomers * Display placeholder even when focused * Change placeholder string and include editor field * Update changelog * Fix localization * Refactor localization
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90 changes: 90 additions & 0 deletions
90
src/main/java/net/sf/jabref/gui/util/component/JTextAreaWithPlaceholder.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,90 @@ | ||
| package net.sf.jabref.gui.util.component; | ||
|
|
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| import java.awt.Color; | ||
| import java.awt.Font; | ||
| import java.awt.Graphics; | ||
| import java.awt.Graphics2D; | ||
| import java.awt.RenderingHints; | ||
| import java.awt.event.KeyEvent; | ||
| import java.awt.event.KeyListener; | ||
|
|
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| import javax.swing.JTextArea; | ||
| import javax.swing.UIManager; | ||
|
|
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| /** | ||
| * A text area which displays a predefined text the same way as {@link JTextFieldWithPlaceholder} does. | ||
| */ | ||
| public class JTextAreaWithPlaceholder extends JTextArea implements KeyListener { | ||
|
|
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| private final String textWhenNotFocused; | ||
|
|
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| public JTextAreaWithPlaceholder() { | ||
| this(""); | ||
| } | ||
|
|
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| /** | ||
| * Additionally to {@link JTextAreaWithPlaceholder#JTextAreaWithPlaceholder(String)} | ||
| * this also sets the initial text of the text field component. | ||
| * | ||
| * @param content as the text of the textfield | ||
| * @param placeholder as the placeholder of the textfield | ||
| */ | ||
| public JTextAreaWithPlaceholder(String content, String placeholder) { | ||
| this(placeholder); | ||
| setText(content); | ||
| } | ||
|
|
||
| /** | ||
| * This will create a {@link JTextArea} with a placeholder text. The placeholder | ||
| * will always be displayed if the text of the {@link JTextArea} is empty. | ||
| * | ||
| * @param placeholder as the placeholder of the textarea | ||
| */ | ||
| public JTextAreaWithPlaceholder(String placeholder) { | ||
| super(); | ||
| this.setEditable(true); | ||
| this.setText(""); | ||
| this.textWhenNotFocused = placeholder; | ||
| } | ||
|
|
||
| @Override | ||
| protected void paintComponent(Graphics graphics) { | ||
| super.paintComponent(graphics); | ||
|
|
||
| if (this.getText().isEmpty()) { | ||
| Font prev = graphics.getFont(); | ||
| Color prevColor = graphics.getColor(); | ||
| graphics.setColor(UIManager.getColor("textInactiveText")); | ||
| int textHeight = graphics.getFontMetrics().getHeight(); | ||
| int x = this.getInsets().left; | ||
| Graphics2D g2d = (Graphics2D) graphics; | ||
| RenderingHints hints = g2d.getRenderingHints(); | ||
| g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON); | ||
| g2d.drawString(textWhenNotFocused, x, textHeight + this.getInsets().top); | ||
| g2d.setRenderingHints(hints); | ||
| graphics.setFont(prev); | ||
| graphics.setColor(prevColor); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void keyTyped(KeyEvent e) { | ||
| if (this.getText().isEmpty()) { | ||
| this.repaint(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void keyPressed(KeyEvent e) { | ||
| if (this.getText().isEmpty()) { | ||
| this.repaint(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void keyReleased(KeyEvent e) { | ||
| if (this.getText().isEmpty()) { | ||
| this.repaint(); | ||
| } | ||
| } | ||
| } |
91 changes: 91 additions & 0 deletions
91
src/main/java/net/sf/jabref/gui/util/component/JTextFieldWithPlaceholder.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| package net.sf.jabref.gui.util.component; | ||
|
|
||
| import java.awt.Color; | ||
| import java.awt.Font; | ||
| import java.awt.Graphics; | ||
| import java.awt.Graphics2D; | ||
| import java.awt.RenderingHints; | ||
| import java.awt.event.KeyEvent; | ||
| import java.awt.event.KeyListener; | ||
|
|
||
| import javax.swing.JTextField; | ||
| import javax.swing.UIManager; | ||
|
|
||
| /** | ||
| * A text field which displays a predefined text (e.g. "Search") if the text field is empty. | ||
| * This is similar to a html5 input element with a defined placeholder attribute. | ||
| * Implementation based on https://gmigdos.wordpress.com/2010/03/30/java-a-custom-jtextfield-for-searching/ | ||
| */ | ||
| public class JTextFieldWithPlaceholder extends JTextField implements KeyListener { | ||
|
|
||
| private final String textWhenNotFocused; | ||
|
|
||
| /** | ||
| * Additionally to {@link JTextFieldWithPlaceholder#JTextFieldWithPlaceholder(String)} | ||
| * this also sets the initial text of the text field component. | ||
| * | ||
| * @param content as the text of the textfield | ||
| * @param placeholder as the placeholder of the textfield | ||
| */ | ||
| public JTextFieldWithPlaceholder(String content, String placeholder) { | ||
| this(placeholder); | ||
| setText(content); | ||
| } | ||
|
|
||
| /** | ||
| * This will create a {@link JTextField} with a placeholder text. The placeholder | ||
| * will always be displayed if the text of the {@link JTextField} is empty. | ||
| * | ||
| * @param placeholder as the placeholder of the textfield | ||
| */ | ||
| public JTextFieldWithPlaceholder(String placeholder) { | ||
| super(); | ||
| this.setEditable(true); | ||
| this.setText(""); | ||
| this.textWhenNotFocused = placeholder; | ||
| } | ||
|
|
||
| @Override | ||
| protected void paintComponent(Graphics graphics) { | ||
| super.paintComponent(graphics); | ||
|
|
||
| if (this.getText().isEmpty()) { | ||
| int height = this.getHeight(); | ||
| Font prev = graphics.getFont(); | ||
| Color prevColor = graphics.getColor(); | ||
| graphics.setColor(UIManager.getColor("textInactiveText")); | ||
| int textHeight = graphics.getFontMetrics().getHeight(); | ||
| int textBottom = (((height - textHeight) / 2) + textHeight) - 4; | ||
| int x = this.getInsets().left; | ||
| Graphics2D g2d = (Graphics2D) graphics; | ||
| RenderingHints hints = g2d.getRenderingHints(); | ||
| g2d.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON); | ||
| g2d.drawString(textWhenNotFocused, x, textBottom); | ||
| g2d.setRenderingHints(hints); | ||
| graphics.setFont(prev); | ||
| graphics.setColor(prevColor); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void keyTyped(KeyEvent e) { | ||
| if (this.getText().isEmpty()) { | ||
| this.repaint(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void keyPressed(KeyEvent e) { | ||
| if (this.getText().isEmpty()) { | ||
| this.repaint(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void keyReleased(KeyEvent e) { | ||
| if (this.getText().isEmpty()) { | ||
| this.repaint(); | ||
| } | ||
| } | ||
|
|
||
| } |
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