#1798: refactoring, extract common asynctask with progress

1 files changed, 80 insertions, 0 deletions

diff --git a/main/src/cgeo/geocaching/utils/AsyncTaskWithProgress.java b/main/src/cgeo/geocaching/utils/AsyncTaskWithProgress.java
new file mode 100644
index 0000000..b23fa9d
--- /dev/null
+++ b/main/src/cgeo/geocaching/utils/AsyncTaskWithProgress.java
@@ -0,0 +1,80 @@
+package cgeo.geocaching.utils;
+
+import cgeo.geocaching.activity.Progress;
+
+import android.app.Activity;
+import android.app.ProgressDialog;
+import android.os.AsyncTask;
+
+/**
+ * AsyncTask which automatically shows a progress dialog. Use it like the {@code AsyncTask} class, but leave away the
+ * middle template parameter.
+ *
+ * @param <Params>
+ * @param <Result>
+ */
+public abstract class AsyncTaskWithProgress<Params, Result> extends AsyncTask<Params, Integer, Result> {
+
+    private final Progress progress = new Progress();
+    private final Activity activity;
+    private final int maxProgress;
+    private final String progressTitle;
+    private final String progressMessage;
+
+    /**
+     * Creates an AsyncTask with progress dialog, where the maximum is set to the given maxProgress.
+     * 
+     * @param activity
+     * @param maxProgress
+     * @param progressTitle
+     * @param progressMessage
+     */
+    public AsyncTaskWithProgress(final Activity activity, final int maxProgress, final String progressTitle, final String progressMessage) {
+        this.activity = activity;
+        this.maxProgress = maxProgress;
+        this.progressTitle = progressTitle;
+        this.progressMessage = progressMessage;
+    }
+
+    /**
+     * Creates an AsyncTask with progress dialog, where the maximum is set to indeterminate.
+     * 
+     * @param activity
+     * @param progressTitle
+     * @param progressMessage
+     */
+    public AsyncTaskWithProgress(final Activity activity, final String progressTitle, final String progressMessage) {
+        this(activity, 0, progressTitle, progressMessage);
+    }
+
+    @Override
+    protected void onPreExecute() {
+        if (null != activity) {
+            if (maxProgress <= 0) {
+                progress.show(activity, progressTitle, progressMessage, true, null);
+            }
+            else {
+                progress.show(activity, progressTitle, progressMessage, ProgressDialog.STYLE_HORIZONTAL, null);
+            }
+            progress.setMaxProgressAndReset(maxProgress);
+        }
+    }
+
+    @Override
+    protected void onPostExecute(Result result) {
+        if (null != activity) {
+            progress.dismiss();
+        }
+    }
+
+    @Override
+    protected void onProgressUpdate(Integer... status) {
+        if (null != activity) {
+            progress.setProgress(status[0]);
+        }
+    }
+
+    protected void setMessage(final String message) {
+        progress.setMessage(message);
+    }
+}