paragraph style function and preserve space fix

oxml/elements/paragraph.go

@@ -38,8 +38,12 @@ func DefaultParagraphChild() *ParagraphChild {
 	return &ParagraphChild{}
 }
 
-func (p *Paragraph) GetType() string {
-	return "p"
+func (p *Paragraph) Style(value string) *Paragraph {
+	if p.Property == nil {
+		p.Property = DefaultParaProperty()
+	}
+	p.Property.Style = NewParagraphStyle(value)
+	return p
 }
 
 func (p *Paragraph) Numbering(id int, level int) {

oxml/elements/run.go

@@ -99,6 +99,11 @@ func (r *Run) Underline(value UnderlineStyle) *Run {
 	return r
 }
 
+func (r *Run) Style(value string) *Run {
+	r.RunProperty.Style = NewRunStyle(value)
+	return r
+}
+
 func (r *Run) MarshalXML(e *xml.Encoder, start xml.StartElement) (err error) {
 	start.Name.Local = "w:r"
 

oxml/elements/text.go

@@ -6,19 +6,27 @@ import (
 )
 
 type Text struct {
-	text string
+	text          string
+	preserveSpace bool
 }
 
 func NewText() *Text {
-	return &Text{}
+	return &Text{
+		preserveSpace: true,
+	}
 }
 
 func TextFromString(text string) *Text {
-	return &Text{text: text}
+	return &Text{text: text, preserveSpace: true}
 }
 
 func (t *Text) MarshalXML(e *xml.Encoder, start xml.StartElement) (err error) {
 	elem := xml.StartElement{Name: xml.Name{Local: "w:t"}}
+
+	if t.preserveSpace {
+		elem.Attr = append(elem.Attr, xml.Attr{Name: xml.Name{Local: "xml:space"}, Value: "preserve"})
+	}
+
 	if err = e.EncodeElement(t.text, elem); err != nil {
 		return err
 	}
@@ -29,6 +37,13 @@ func (t *Text) MarshalXML(e *xml.Encoder, start xml.StartElement) (err error) {
 func (t *Text) UnmarshalXML(d *xml.Decoder, start xml.StartElement) (err error) {
 	var buf bytes.Buffer
 
+	for _, attr := range start.Attr {
+		if attr.Name.Local == "space" && attr.Value == "preserve" {
+			t.preserveSpace = true
+			break
+		}
+	}
+
 	for {
 		token, err := d.Token()
 		if err != nil {