starting work on widget controls

README

@@ -1,21 +1,16 @@
 The HubbleSite Daily Image Widget embeds a daily HubbleSite Gallery image on
 your WordPress blog.
 
-Copyright (c) 2009 John Bintz
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
 
-Permission is hereby granted, free of charge, to any person obtaining a copy of
+This program is distributed in the hope that it will be useful,
-this software and associated documentation files (the "Software"), to deal in the
+but WITHOUT ANY WARRANTY; without even the implied warranty of
-Software without restriction, including without limitation the rights to use,
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+GNU General Public License for more details.
-Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
 
-The above copyright notice and this permission notice shall be included in all
+You should have received a copy of the GNU General Public License
-copies or substantial portions of the Software.
+along with this program; if not, write to the Free Software
-
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

classes/DailyImageWidget.php

@@ -1,7 +1,7 @@
 <?php
 
 class DailyImageWidget {
-  function DailyImageWidget() {
+  function DailyImageWidget($skip_load_data = false) {
     $this->default_display_options = array(
       'title',
       'image',
@@ -11,21 +11,59 @@ class DailyImageWidget {
     $this->_cache_time = 86400;
     
     $this->data_source = "http://hubblesite.org/gallery/album/daily_image.php";
-    $this->data = false;
     
     $this->has_simplexml = class_exists('SimpleXMLElement');
     
     $this->_valid_column_names = array('title', 'caption', 'date', 'image_url', 'gallery_url', 'credits');
     $this->_valid_options = array(
-      "image"   => "Daily Image",
+      "image"   => __("Daily Image", "hubblesite-daily-image-widget"),
-      "title"   => "Image Title",
+      "title"   => __("Image Title", "hubblesite-daily-image-widget"),
-      "caption" => "Image Caption",
+      "caption" => __("Image Caption", "hubblesite-daily-image-widget"),
-      "credits" => "Credits",
+      "credits" => __("Credits", "hubblesite-daily-image-widget"),
-      "styles" => "HubbleSite Styles",
+      "styles"  => __("HubbleSite Styles", "hubblesite-daily-image-widget"),
     );
     
-    wp_register_sidebar_widget("hubblesite-daily-image", "HubbleSite Daily Image", array($this, "render"));
+    add_action('init', array($this, "_init"));
-    register_widget_control("hubblesite-daily-image", array($this, "render_ui"));
+    
+    if (!$skip_load_data) {
+      if (!$this->_load_data()) {
+        add_action("admin_notices", array($this, "_connection_warning"));
+      }
+    } else {
+      $this->data = false;
+    }
+    
+    $this->display_options = $this->get_display_options();
+  }
+  
+  function _init() {
+    register_sidebar_widget(__("HubbleSite Daily Image", "hubblesite-daily-image-widget"), array($this, "render"));  
+    register_widget_control(__("HubbleSite Daily Image", "hubblesite-daily-image-widget"), array($this, "render_ui"));  
+  }
+  
+  function _connection_warning() {
+    echo "<div class=\"updated fade\">";
+      _e("<strong>HubbleSite Daily Image Widget</strong> was unable to retrieve new data from HubbleSite.", "hubblesite-daily-image-widget");
+      _e("The widget will appear as empty in your site until data can be downloaded again.", "hubblesite-daily-image-widget");
+    echo "</div>";
+  }
+  
+  function _get_from_data_source() {
+    return @file_get_contents($this->data_source);
+  }
+
+  function _load_data() {
+    if (($result = $this->_get_cached_data()) === false) {
+      if (($xml_text = $this->_get_from_data_source()) !== false) {
+        if (($result = $this->parse_xml($xml_text)) !== false) {
+          update_option('hubblesite-daily-image-cache', array(time(), $result));
+          return true;
+        }
+      }
+      return false;
+    } else {
+      return true;
+    }
   }
 
   /**
@@ -42,6 +80,8 @@ class DailyImageWidget {
       $this->display_options = $this->default_display_options;
     }
 
+    update_option('hubblesite-daily-image-options', implode(",", $this->display_options));
+
     return $this->display_options;
   }
   
@@ -87,13 +127,16 @@ class DailyImageWidget {
   }
   
   function render_ui() {
-    echo "<p>Show on Widget:</p>";
+    echo "<p>";
+      _e("Show on Widget:", "hubblesite-daily-image-widget");
+    echo "</p>";
     
     foreach ($this->_valid_options as $option => $label) {
       echo "<label>";
         echo "<input type=\"checkbox\" name=\"hubblesite[${option}]\" />";
         echo $label;
       echo "</label>";
+      echo "<br />";
     }
   }
   
@@ -176,7 +219,10 @@ class DailyImageWidget {
             if (!isset($cached_data[$field])) { $is_valid = false; break; }
           }
           
-          return ($is_valid) ? $cached_data : false;
+          if ($is_valid) {
+            $this->data = $cached_data;
+            return $cached_data;
+          }
         }
       }
     }

daily-image-widget.php

@@ -1,7 +1,31 @@
 <?php
+/*
+Plugin Name: HubbleSite Daily Image Widget
+Plugin URI: http://github.com/johnbintz/hubblesite-daily-image-wordpress/tree/master
+Description: The HubbleSite Daily Image Widget embeds a daily HubbleSite Gallery image on your WordPress blog. 
+Version: 0.1
+Author: John Bintz
+Author URI: http://hubblesite.org/
+
+Copyright 2009 John Bintz  (email : bintz@stsci.edu)
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+*/
 
 require_once("classes/DailyImageWidget.php");
-
 $daily_image_widget = new DailyImageWidget();
 
 ?>

test/DailyImageWidgetTest.php

@@ -1,5 +1,6 @@
 <?php
 
+error_reporting(E_STRICT);
 require_once('PHPUnit/Framework.php');
 require_once(dirname(__FILE__) . '/../classes/DailyImageWidget.php');
 require_once(dirname(__FILE__) . '/../../mockpress/mockpress.php');
@@ -8,7 +9,7 @@ class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
   function setUp() {
     _reset_wp();
     
-    $this->diw = new DailyImageWidget();
+    $this->diw = new DailyImageWidget(true);
     
     $this->sample_data = array(
       'title' => 'title',
@@ -24,8 +25,7 @@ class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
 
   function testWidgetRegistered() {
      global $wp_test_expectations;
-     $this->assertEquals("hubblesite-daily-image", $wp_test_expectations['sidebar_widgets'][0]['id']);
+     $this->assertEquals("_init", $wp_test_expectations['actions']['init'][1]);
-     $this->assertEquals("hubblesite-daily-image", $wp_test_expectations['widget_controls'][0]['name']);
   }
 
   function providerTestRetrieveJunkData() {
@@ -123,10 +123,16 @@ class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
    */  
   function testGetDisplayOptions($options, $result) {
     update_option('hubblesite-daily-image-options', $options);
-    
     $this->assertEquals($result, $this->diw->get_display_options());
   }
   
+  function testGetDefaultDisplayOptions() {
+    _reset_wp();
+    $this->assertFalse(get_option('hubblesite-daily-image-options'));    
+    $this->diw->get_display_options();
+    $this->assertTrue(get_option('hubblesite-daily-image-options') !== false);
+  }
+  
   function providerTestParseBadXML() {
     return array(
       array(null),
@@ -196,6 +202,41 @@ class DailyImageWidgetTest extends PHPUnit_Framework_TestCase {
     update_option('hubblesite-daily-image-cache', null);
     $this->assertEquals(false, $this->diw->_get_cached_data());
   }
+  
+  function testLoadData() {
+    $diw = $this->getMock('DailyImageWidget', array('_get_from_data_source', '_get_cached_data', 'parse_xml'));
+    $diw->expects($this->once())->method('_get_cached_data')->will($this->returnValue(false));
+    $diw->expects($this->once())->method('_get_from_data_source')->will($this->returnValue(false));
+    _reset_wp();
+    
+    $this->assertFalse($diw->_load_data());
+    $this->assertFalse(is_array(get_option('hubblesite-daily-image-cache')));
+
+    $diw = $this->getMock('DailyImageWidget', array('_get_from_data_source', '_get_cached_data', 'parse_xml'));
+    $diw->expects($this->once())->method('_get_cached_data')->will($this->returnValue(true));
+    _reset_wp();
+    
+    $this->assertTrue($diw->_load_data());
+    $this->assertFalse(is_array(get_option('hubblesite-daily-image-cache')));
+
+    $diw = $this->getMock('DailyImageWidget', array('_get_from_data_source', '_get_cached_data', 'parse_xml'));
+    $diw->expects($this->once())->method('_get_cached_data')->will($this->returnValue(false));
+    $diw->expects($this->once())->method('_get_from_data_source')->will($this->returnValue(true));
+    $diw->expects($this->once())->method('parse_xml')->will($this->returnValue(false));
+    _reset_wp();
+    
+    $this->assertFalse($diw->_load_data());
+    $this->assertFalse(is_array(get_option('hubblesite-daily-image-cache')));
+
+    $diw = $this->getMock('DailyImageWidget', array('_get_from_data_source', '_get_cached_data', 'parse_xml'));
+    $diw->expects($this->once())->method('_get_cached_data')->will($this->returnValue(false));
+    $diw->expects($this->once())->method('_get_from_data_source')->will($this->returnValue(true));
+    $diw->expects($this->once())->method('parse_xml')->will($this->returnValue(true));    
+    _reset_wp();
+    
+    $this->assertTrue($diw->_load_data());
+    $this->assertTrue(is_array(get_option('hubblesite-daily-image-cache')));
+  }
 }
 
 ?>