TOPIC:

@Override
		public boolean onSingleTapUp(MotionEvent e) {
			if ( m_status == STA_NONE || m_status == STA_ANNOT || m_status == STA_EDIT_TEXT) {
				m_annot_pos = m_layout.vGetPos((int)e.getX(), (int)e.getY());
				m_annot_page = m_layout.vGetPage(m_annot_pos.pageno);
				Page page = m_doc.GetPage(m_annot_page.GetPageNo());

				if( page == null ) {
					m_annot = null;
				} else {
					m_annot = page.GetAnnotFromPoint(m_annot_pos.x, m_annot_pos.y);
				}

				if( m_annot == null ) { // No Annotation selected
					m_annot_page = null;
					m_annot_pos = null;
					m_annot_rect = null;
					if( m_listener != null )
					{
						if(m_status == STA_ANNOT)
							m_listener.OnPDFAnnotTapped(m_annot_page, null);
						else
							m_listener.OnPDFBlankTapped();
					}
					m_status = STA_NONE;
				} else { // Annotation selected
					page.ObjsStart();
					m_annot_rect = m_annot.GetRect();
					float tmp = m_annot_rect[1];
					m_annot_rect[0] = m_annot_page.GetVX(m_annot_rect[0]) - m_layout.vGetX();
					m_annot_rect[1] = m_annot_page.GetVY(m_annot_rect[3]) - m_layout.vGetY();
					m_annot_rect[2] = m_annot_page.GetVX(m_annot_rect[2]) - m_layout.vGetX();
					m_annot_rect[3] = m_annot_page.GetVY(tmp) - m_layout.vGetY();

					if ( m_status == STA_EDIT_TEXT){
						if( m_doc.CanSave() && m_annot.GetEditType() > 0 ) { // this annotation is a text-box.
							int[] location = new int[2];
							getLocationOnScreen(location);
							m_pEdit = new PopupWindow(LayoutInflater.from(getContext()).inflate(R.layout.pop_editbox, null) );
							Drawable dw = new ColorDrawable(0);
							m_pEdit.setFocusable(true);
							m_pEdit.setTouchable(true);
							m_pEdit.setBackgroundDrawable(dw);
							m_pEdit.setWidth((int)(m_annot_rect[2] - m_annot_rect[0]));
							m_pEdit.setHeight((int)(m_annot_rect[3] - m_annot_rect[1]));
							final EditText edit = (EditText)m_pEdit.getContentView().findViewById(R.id.pop_editbox_edittext);
							edit.setBackgroundColor(0xFFFFFFC0);
							float fsize = m_annot.GetEditTextSize() * m_layout.vGetScale();
							edit.setTextSize(TypedValue.COMPLEX_UNIT_PX, fsize);
							edit.setPadding(2, 2, 2, 2);
							switch( m_annot.GetEditType() )
							{
								case 1: //normal single line.
									edit.setSingleLine();
									edit.setInputType(InputType.TYPE_CLASS_TEXT + InputType.TYPE_TEXT_VARIATION_NORMAL);
									break;
								case 2: //password.
									edit.setSingleLine();
									edit.setInputType(InputType.TYPE_CLASS_TEXT + InputType.TYPE_TEXT_VARIATION_PASSWORD);
									break;
								case 3: //MultiLine edit area.
									edit.setSingleLine(false);
									edit.setInputType(InputType.TYPE_CLASS_TEXT + InputType.TYPE_TEXT_VARIATION_NORMAL);
									break;
							}
							int maxlen = m_annot.GetEditMaxlen();
							if( maxlen > 0 )
								edit.setFilters(new InputFilter[]{new InputFilter.LengthFilter(maxlen)});
							else
								edit.setFilters(new InputFilter[]{new InputFilter.LengthFilter(1020)});
							edit.setText(m_annot.GetEditText());
							m_edit_type = 1;
							m_pEdit.setOnDismissListener(new PopupWindow.OnDismissListener() {
								@Override
								public void onDismiss() {
									if( m_edit_type == 1 )//edit box
									{
										m_annot.SetEditText(edit.getText().toString());
										m_layout.vRenderSync(m_annot_page);
										if( m_listener != null )
											m_listener.OnPDFPageModified(m_annot_page.GetPageNo());
										PDFEndAnnot();
									}
									m_edit_type = 0;
								}
							});
							m_pEdit.showAtLocation(ExtendedPDFLayoutView.this, Gravity.NO_GRAVITY, (int)m_annot_rect[0] + location[0], (int)m_annot_rect[1] + location[1]);
						}
					} else if (m_status == STA_NONE) { // Annotation selected move to annotation state
						m_status = STA_ANNOT;

						if( m_doc.CanSave() && m_annot.GetComboItemCount() >= 0 ) //-1: this is not combo. otherwise: items count.
						{
							int[] location = new int[2];
							getLocationOnScreen(location);
							String opts[] = new String[m_annot.GetComboItemCount()];
							int cur = 0;
							while( cur < opts.length )
							{
								opts[cur] = m_annot.GetComboItem(cur);
								cur++;
							}
							m_pCombo = new PopupWindow(LayoutInflater.from(getContext()).inflate(com.radaee.viewlib.R.layout.pop_combo, null));
							Drawable dw = new ColorDrawable(0);
							m_pCombo.setFocusable(true);
							m_pCombo.setTouchable(true);
							m_pCombo.setBackgroundDrawable(dw);
							m_pCombo.setWidth((int)(m_annot_rect[2] - m_annot_rect[0]));
							if( (m_annot_rect[3] - m_annot_rect[1] - 4) * opts.length > 250 )
								m_pCombo.setHeight(250);
							else
								m_pCombo.setHeight((int)(m_annot_rect[3] - m_annot_rect[1] - 4) * opts.length);
							ComboList combo = (ComboList)m_pCombo.getContentView().findViewById(com.radaee.viewlib.R.id.annot_combo);
							combo.set_opts(opts);
							combo.setOnItemClickListener(new OnItemClickListener() {
								@Override
								public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
									m_combo_item = i;
									m_pCombo.dismiss();
								}
							});
							m_edit_type = 2;
							m_combo_item = -1;
							m_pCombo.setOnDismissListener(new PopupWindow.OnDismissListener() {
								@Override
								public void onDismiss() {
									if( m_edit_type == 2 )//combo
									{
										if( m_combo_item >= 0 )
										{
											m_annot.SetComboItem(m_combo_item);
											m_layout.vRenderSync(m_annot_page);
											if( m_listener != null )
												m_listener.OnPDFPageModified(m_annot_page.GetPageNo());
										}
										m_combo_item = -1;
										PDFEndAnnot();
									}
									m_edit_type = 0;

								}
							});
							m_pCombo.showAtLocation(ExtendedPDFLayoutView.this, Gravity.NO_GRAVITY, (int)m_annot_rect[0] + location[0], (int)(m_annot_rect[3] + location[1]));
						}

					} else if( m_listener != null ) {
						m_listener.OnPDFAnnotTapped(m_annot_page, m_annot);
					}

					invalidate();
				}

				return true;

			}
			return false;
		}