From 6d2196b860a63b3c8c1105d2bee475d564668b63 Mon Sep 17 00:00:00 2001
From: Hao Sun <sunhao@easycorp.ltd>
Date: Tue, 17 Jan 2023 10:13:15 +0800
Subject: [PATCH] * zin: add builder class for building html code

---
 zin/core/builder.class.php | 168 +++++++++++++++++++++++++++++++++++++
 1 file changed, 168 insertions(+)
 create mode 100644 zin/core/builder.class.php

diff --git a/zin/core/builder.class.php b/zin/core/builder.class.php
new file mode 100644
index 0000000000..377d94cfb6
--- /dev/null
+++ b/zin/core/builder.class.php
@@ -0,0 +1,168 @@
+<?php
+require_once 'props.class.php';
+
+/**
+ * HTML builder
+ */
+class builder
+{
+    public $tag = '';
+
+    public $children = array();
+
+    public $propsStr = '';
+
+    public $prefix = array();
+
+    public $suffix = array();
+
+    public $jsCode = array();
+
+    public $cssCode = array();
+
+    public $jsImports = array();
+
+    public $cssImports = array();
+
+    public $jsVars = array();
+
+    public function __construct($tag = '')
+    {
+        $this->tag = $tag;
+    }
+
+    public function before($content)
+    {
+        if(is_array($content)) $this->prefix = array_merge($this->prefix, $content);
+        else $this->prefix[] = $content;
+        return $this;
+    }
+
+    public function after($content)
+    {
+        if(is_array($content)) $this->suffix = array_merge($this->suffix, $content);
+        else $this->suffix[] = $content;
+        return $this;
+    }
+
+    public function empty()
+    {
+        $this->children = [];
+        return $this;
+    }
+
+    public function append($content)
+    {
+        if(is_array($content)) $this->children = array_merge($this->children, $content);
+        else $this->children[] = $content;
+        return $this;
+    }
+
+    public function prepend($content)
+    {
+        if(is_array($content)) $this->children = array_merge($content, $this->children);
+        else array_unshift($this->children, $content);
+        return $this;
+    }
+
+    public function props($props, $reset = false)
+    {
+        if($reset) $this->propsStr = '';
+
+        $this->propsStr .= ' ' . strval($props);
+        return $this;
+    }
+
+    public function js($code)
+    {
+        if(is_array($code)) $this->jsCode = array_merge($this->jsCode, $code);
+        else $this->jsCode[] = $code;
+        return $this;
+    }
+
+    public function css($code)
+    {
+        if(is_array($code)) $this->cssCode = array_merge($this->cssCode, $code);
+        else $this->cssCode[] = $code;
+        return $this;
+    }
+
+    public function importJs($jsFile)
+    {
+        if(is_array($jsFile)) $this->jsImports = array_merge($this->jsImports, $jsFile);
+        else $this->jsImports[] = $jsFile;
+        return $this;
+    }
+
+    public function build()
+    {
+        $html = array();
+
+        if(!empty($this->cssImports))
+        {
+            foreach($this->cssImports as $href)
+            {
+                if(!empty($href)) $html[] = "<link rel=\"stylesheet\" href=\"$href\">";
+            }
+        }
+
+        if(!empty($this->cssCode))
+        {
+            $cssCode = '';
+            foreach($this->cssCode as $css)
+            {
+                if(!empty($css)) $cssCode .= $css;
+            }
+            if(!empty($cssCode)) $html[] = "<style>$cssCode</style>";
+        }
+
+        if(!empty($this->prefix)) $html = array_merge($html, $this->prefix);
+
+        if(!empty($this->tag)) $html[] = "<$this->tag" . "$this->propsStr>";
+
+        if(!empty($this->children)) array_merge($html, $this->children);
+
+        if(!empty($this->tag)) $html[] = "</$this->tag>";
+
+        if(!empty($this->suffix)) $html = array_merge($html, $this->suffix);
+
+        $jsCode = '';
+        if(!empty($this->jsVars))
+        {
+            foreach($this->jsVars as $var => $val)
+            {
+                if(empty($var)) continue;
+                if(strpos($var, 'window.') === 0) $jsCode .= "$var=" . json_encode($val) . ';';
+                else $jsCode .= "var $var=" . json_encode($val) . ';';
+            }
+        }
+        if(!empty($this->jsImports))
+        {
+            foreach($this->jsImports as $src)
+            {
+                if(!empty($src)) $html[] = "<script src=\"$src\"></script>";
+            }
+        }
+        if(!empty($this->jsCode))
+        {
+            foreach($this->jsCode as $js)
+            {
+                if(!empty($js)) $jsCode .= $js;
+            }
+        }
+        if(!empty($jsCode)) $html[] = "<script>(function(){$jsCode}</script>";
+
+        return implode("\n", $html);
+    }
+
+    /**
+     * Create html builder instance
+     *
+     * @param array $tag - Element tag name
+     * @return builder
+     */
+    static public function new($tag = '')
+    {
+        return new builder($tag);
+    }
+}