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lazy loading

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bancika
2016-10-25 18:16:21 +02:00
parent 727d46e8d3
commit f65b43b578
7 changed files with 99 additions and 31 deletions
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diylc/diylc-swing/src/org/diylc/swing/gui/MainFrame.java
+1 -1
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@@ -371,7 +371,7 @@ public class MainFrame extends JFrame implements ISwingUI {
fileName = "Untitled";
}
String modified = (Boolean) params[1] ? " (modified)" : "";
setTitle(String.format("DIYLC G3 release %s.%s - %s %s", plugInPort.getCurrentVersionNumber().getMinor(), plugInPort.getCurrentVersionNumber().getBuild(), fileName, modified));
setTitle(String.format("DIYLC G3 version %s.%s - %s %s", plugInPort.getCurrentVersionNumber().getMinor(), plugInPort.getCurrentVersionNumber().getBuild(), fileName, modified));
}
}
}
diylc/diylc-swing/src/org/diylc/swing/plugins/cloud/CloudPlugIn.java
+1 -1
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@@ -188,7 +188,7 @@ public class CloudPlugIn implements IPlugIn, CloudListener {
public LibraryAction() {
super();
putValue(AbstractAction.NAME, "Browse The Cloud");
putValue(AbstractAction.NAME, "Search The Cloud");
putValue(AbstractAction.SMALL_ICON, IconLoader.Cloud.getIcon());
}
diylc/diylc-swing/src/org/diylc/swing/plugins/cloud/view/browser/CloudBrowserFrame.java
+31 -19
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@@ -60,7 +60,7 @@ public class CloudBrowserFrame extends JFrame {
private ISwingUI swingUI;
public CloudBrowserFrame(ISwingUI swingUI, IPlugInPort plugInPort, CloudPresenter cloudPresenter) {
super("Cloud Surfer");
super("Search The Cloud");
this.swingUI = swingUI;
this.setIconImage(IconLoader.Cloud.getImage());
this.setPreferredSize(new Dimension(700, 640));
@@ -136,14 +136,14 @@ public class CloudBrowserFrame extends JFrame {
gbc.fill = GridBagConstraints.BOTH;
searchPanel.add(getResultsScrollPane(), gbc);
gbc.anchor = GridBagConstraints.NORTHWEST;
gbc.insets = new Insets(2, 2, 2, 2);
gbc.gridx = 0;
gbc.gridy++;
gbc.fill = GridBagConstraints.BOTH;
gbc.weighty = 0;
gbc.gridwidth = 3;
searchPanel.add(getNavigationPanel(), gbc);
// gbc.anchor = GridBagConstraints.NORTHWEST;
// gbc.insets = new Insets(2, 2, 2, 2);
// gbc.gridx = 0;
// gbc.gridy++;
// gbc.fill = GridBagConstraints.BOTH;
// gbc.weighty = 0;
// gbc.gridwidth = 3;
// searchPanel.add(getNavigationPanel(), gbc);
}
return searchPanel;
}
@@ -159,7 +159,7 @@ public class CloudBrowserFrame extends JFrame {
CloudBrowserFrame.this.searchFor = getSearchHeaderPanel().getSearchText();
CloudBrowserFrame.this.category = getSearchHeaderPanel().getCategory();
CloudBrowserFrame.this.sort = getSearchHeaderPanel().getSorting();
getResultsScrollPane().clear();
search();
}
});
@@ -169,7 +169,19 @@ public class CloudBrowserFrame extends JFrame {
private ResultsScrollPanel getResultsScrollPane() {
if (resultsScrollPane == null) {
resultsScrollPane = new ResultsScrollPanel(swingUI, this, plugInPort);
resultsScrollPane = new ResultsScrollPanel(swingUI, this, plugInPort, new ILazyProvider<ProjectEntity>() {
@Override
public void requestMore() {
setPageNumber(CloudBrowserFrame.this.pageNumber + 1);
CloudBrowserFrame.this.search();
}
@Override
public boolean hasMore() {
return currentResults.size() == itemsPerPage;
}
});
}
return resultsScrollPane;
}
@@ -191,17 +203,17 @@ public class CloudBrowserFrame extends JFrame {
@Override
public void complete(List<ProjectEntity> result) {
CloudBrowserFrame.this.currentResults = result;
getResultsScrollPane().clear();
int count = 0;
getResultsScrollPane().startBatch();
for (Iterator<ProjectEntity> i = result.iterator(); i.hasNext();) {
ProjectEntity project = i.next();
getResultsScrollPane().addProjectToDisplay(project, count++);
getResultsScrollPane().addProjectToDisplay(project);
}
if (count == 0) {
getResultsScrollPane().showNoMatches();
count++;
} else
getResultsScrollPane().finish();
// if (count == 0) {
// getResultsScrollPane().showNoMatches();
// count++;
// } else
getResultsScrollPane().finishBatch();
}
});
}
diylc/diylc-swing/src/org/diylc/swing/plugins/cloud/view/browser/ILazyProvider.java
+9
View File
@@ -0,0 +1,9 @@
package org.diylc.swing.plugins.cloud.view.browser;
public interface ILazyProvider<T> {
boolean hasMore();
void requestMore();
}
diylc/diylc-swing/src/org/diylc/swing/plugins/cloud/view/browser/ResultsScrollPanel.java
+38 -10
View File
@@ -2,7 +2,7 @@ package org.diylc.swing.plugins.cloud.view.browser;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
@@ -50,11 +50,18 @@ public class ResultsScrollPanel extends JScrollPane {
private IPlugInPort plugInPort;
public ResultsScrollPanel(ISwingUI mainUI, CloudBrowserFrame cloudUI, IPlugInPort plugInPort) {
private boolean running;
private ILazyProvider<ProjectEntity> provider;
private int location;
public ResultsScrollPanel(ISwingUI mainUI, CloudBrowserFrame cloudUI, IPlugInPort plugInPort,
ILazyProvider<ProjectEntity> provider) {
super();
this.mainUI = mainUI;
this.cloudUI = cloudUI;
this.plugInPort = plugInPort;
this.provider = provider;
this.getVerticalScrollBar().setUnitIncrement(16);
this.setBorder(null);
@@ -63,6 +70,7 @@ public class ResultsScrollPanel extends JScrollPane {
public void clear() {
getResultsPanel().removeAll();
running = false;
}
public void showNoMatches() {
@@ -78,7 +86,12 @@ public class ResultsScrollPanel extends JScrollPane {
getResultsPanel().add(label, gbc);
}
public void addProjectToDisplay(final ProjectEntity project, int location) {
public void startBatch() {
this.getResultsPanel().remove(getLastLabel());
this.running = true;
}
public void addProjectToDisplay(final ProjectEntity project) {
JLabel thumbnailLabel = new JLabel(loadImage(project.getThumbnailUrl()));
JLabel nameLabel = new JLabel("<html><b>" + project.getName() + "</b></html>");
nameLabel.setFont(nameLabel.getFont().deriveFont(12f));
@@ -111,7 +124,7 @@ public class ResultsScrollPanel extends JScrollPane {
@Override
public Void doInBackground() throws Exception {
LOG.debug("Downloading project to to " + file.getAbsolutePath());
LOG.debug("Downloading project to " + file.getAbsolutePath());
URL website = new URL(project.getDownloadUrl());
ReadableByteChannel rbc = Channels.newChannel(website.openStream());
FileOutputStream fos = new FileOutputStream(file.getAbsolutePath());
@@ -218,20 +231,35 @@ public class ResultsScrollPanel extends JScrollPane {
gbc.insets = new Insets(2, 2, 2, 2);
getResultsPanel().add(new JSeparator(), gbc);
this.lastGridY = gbc.gridy;
location++;
}
private int lastGridY;
public void finish() {
public void finishBatch() {
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.NORTHWEST;
gbc.gridx = 0;
gbc.gridy = lastGridY;
gbc.gridy = location * 6;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 0;
gbc.weighty = 100;
getResultsPanel().add(new JLabel(), gbc);
getResultsPanel().add(getLastLabel(), gbc);
}
private JLabel lastLabel;
private JLabel getLastLabel() {
if (lastLabel == null) {
lastLabel = new JLabel("Load more...") {
@Override
public void paint(Graphics g) {
if (running && provider.hasMore()) {
running = false;
provider.requestMore();
}
}
};
}
return lastLabel;
}
private JPanel getResultsPanel() {