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msd2/tracking/piwik/plugins/ExampleSettingsPlugin/SystemSettings.php

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+<?php
+/**
+ * Piwik - free/libre analytics platform
+ *
+ * @link http://piwik.org
+ * @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
+ */
+
+namespace Piwik\Plugins\ExampleSettingsPlugin;
+
+use Piwik\Settings\Setting;
+use Piwik\Settings\FieldConfig;
+use Piwik\Validators\NotEmpty;
+
+/**
+ * Defines Settings for ExampleSettingsPlugin.
+ *
+ * Usage like this:
+ * $settings = new SystemSettings();
+ * $settings->metric->getValue();
+ * $settings->description->getValue();
+ */
+class SystemSettings extends \Piwik\Settings\Plugin\SystemSettings
+{
+    /** @var Setting */
+    public $metric;
+
+    /** @var Setting */
+    public $browsers;
+
+    /** @var Setting */
+    public $description;
+
+    /** @var Setting */
+    public $password;
+
+    protected function init()
+    {
+        // System setting --> allows selection of a single value
+        $this->metric = $this->createMetricSetting();
+
+        // System setting --> allows selection of multiple values
+        $this->browsers = $this->createBrowsersSetting();
+
+        // System setting --> textarea
+        $this->description = $this->createDescriptionSetting();
+
+        // System setting --> textarea
+        $this->password = $this->createPasswordSetting();
+    }
+
+    private function createMetricSetting()
+    {
+        return $this->makeSetting('metric', $default = 'nb_visits', FieldConfig::TYPE_STRING, function (FieldConfig $field) {
+            $field->title = 'Metric to display';
+            $field->uiControl = FieldConfig::UI_CONTROL_SINGLE_SELECT;
+            $field->availableValues = array('nb_visits' => 'Visits', 'nb_actions' => 'Actions', 'visitors' => 'Visitors');
+            $field->description = 'Choose the metric that should be displayed in the browser tab';
+            $field->validators[] = new NotEmpty();
+        });
+    }
+
+    private function createBrowsersSetting()
+    {
+        $default = array('firefox', 'chromium', 'safari');
+
+        return $this->makeSetting('browsers', $default, FieldConfig::TYPE_ARRAY, function (FieldConfig $field) {
+            $field->title = 'Supported Browsers';
+            $field->uiControl = FieldConfig::UI_CONTROL_MULTI_SELECT;
+            $field->availableValues = array('firefox' => 'Firefox', 'chromium' => 'Chromium', 'safari' => 'safari');
+            $field->description = 'The value will be only displayed in the following browsers';
+        });
+    }
+
+    private function createDescriptionSetting()
+    {
+        $default = "This is the value: \nAnother line";
+
+        return $this->makeSetting('description', $default, FieldConfig::TYPE_STRING, function (FieldConfig $field) {
+            $field->title = 'Description for value';
+            $field->uiControl = FieldConfig::UI_CONTROL_TEXTAREA;
+            $field->description = 'This description will be displayed next to the value';
+            $field->validators[] = new NotEmpty();
+        });
+    }
+
+    private function createPasswordSetting()
+    {
+        return $this->makeSetting('password', $default = null, FieldConfig::TYPE_STRING, function (FieldConfig $field) {
+            $field->title = 'API password';
+            $field->uiControl = FieldConfig::UI_CONTROL_PASSWORD;
+            $field->description = 'Password for the 3rd API where we fetch the value';
+            $field->transform = function ($value) {
+                return sha1($value . 'salt');
+            };
+        });
+    }
+}